Motion Control
The transition to Industry 4.0 has accelerated the adoption of robots, cobots and other advanced machines on the factory floor to generate even greater levels of productivity. But with this come new design challenges in precision motion control, communication interoperability and determinism and the greater use of sensors for position sensing and safety. That’s why we are putting our focus on delivering the highest system performance and leading integration across multiple technologies. We then combine this with extensive motion control system-level knowledge to provide you with unique system solutions today with a clear path to the future.
Signal Chains
(5)
Interactive Signal Chains

Featured Products
ADM3061E

The ADM3061E/ADM3062E/ADM3063E/ADM3064E/ ADM3065E/ADM3066E/ADM3067E/ADM3068E are 3.0 V to 5.5 V, IEC electrostatic discharge (ESD) protected RS-485 transceivers, allowing the devices to withstand ±12 kV contact discharges on the transceiver bus pins without latch-up or damage. The ADM3062E/ADM3064E/ADM3066E/ADM3068E feature a VIO logic supply pin that allows a flexible digital interface capable of operating as low as 1.62 V.
The ADM3065E/ADM3066E/ADM3067E/ADM3068E are suitable for high speed, 50 Mbps, bidirectional data communication on multipoint bus transmission lines. The ADM3061E/ ADM3062E/ADM3063E/ADM3064E/ADM3065E/ADM3066E/ ADM3067E/ADM3068E feature a 1/4 unit load input impedance that allows up to 128 transceivers on a bus. The ADM3061E/ADM3062E/ADM3063E/ADM3064E models offer all of the same features as the ADM3065E/ADM3066E/ ADM3067E/ADM3068E models at a low 500 kbps data rate that is suitable for operation over long cable runs.
The ADM3061E/ADM3062E/ADM3065E/ADM3066E are halfduplex RS-485 transceivers, fully compliant to the PROFIBUS® standard with increased 2.1 V bus differential voltage at VCC ≥ 4.5 V. The ADM3063E/ADM3064E/ADM3067E/ADM3068E are full duplex RS-485 transceiver options.
The RS-485 transceivers are available in a number of spacesaving packages, including the 10-lead, 3 mm × 3 mm lead frame chip-scale package (LFCSP), the 8-lead or 10-lead, 3 mm × 3 mm mini small outline package (MSOP), and the 8-lead or 14-lead, narrow body standard small outline packages (SOIC_N). Models with operating temperature ranges of −40°C to +125°C and −40°C to +85°C are available.
Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit. If a significant temperature increase is detected in the internal driver circuitry during fault conditions, this feature forces the driver output into a high impedance state.
The ADM3061E/ADM3062E/ADM3063E/ADM3064E/ ADM3065E/ADM3066E/ADM3067E/ADM3068E guarantee a logic high receiver output when the receiver inputs are shorted, open, or connected to a terminated transmission line with all drivers disabled.
Table 2 presents an overview of the ADM3061E/ADM3062E/ ADM3063E/ADM3064E/ADM3065E/ADM3066E/ADM3067E/ ADM3068E data rate capability across temperature, power supply, and package options. Refer to the Ordering Guide section for model numbering.
Applications
- Industrial fieldbuses
- Process control
- Building automation
- PROFIBUS networks
- Motor control servo drives and encoders
Applications
Security and Surveillance
- Access Control
Building Technology
- Heating Ventilation and Air Conditioning
- Building Control and Automation
ADM3062E

The ADM3061E/ADM3062E/ADM3063E/ADM3064E/ ADM3065E/ADM3066E/ADM3067E/ADM3068E are 3.0 V to 5.5 V, IEC electrostatic discharge (ESD) protected RS-485 transceivers, allowing the devices to withstand ±12 kV contact discharges on the transceiver bus pins without latch-up or damage. The ADM3062E/ADM3064E/ADM3066E/ADM3068E feature a VIO logic supply pin that allows a flexible digital interface capable of operating as low as 1.62 V.
The ADM3065E/ADM3066E/ADM3067E/ADM3068E are suitable for high speed, 50 Mbps, bidirectional data communication on multipoint bus transmission lines. The ADM3061E/ ADM3062E/ADM3063E/ADM3064E/ADM3065E/ADM3066E/ ADM3067E/ADM3068E feature a 1/4 unit load input impedance that allows up to 128 transceivers on a bus. The ADM3061E/ADM3062E/ADM3063E/ADM3064E models offer all of the same features as the ADM3065E/ADM3066E/ ADM3067E/ADM3068E models at a low 500 kbps data rate that is suitable for operation over long cable runs.
The ADM3061E/ADM3062E/ADM3065E/ADM3066E are halfduplex RS-485 transceivers, fully compliant to the PROFIBUS® standard with increased 2.1 V bus differential voltage at VCC ≥ 4.5 V. The ADM3063E/ADM3064E/ADM3067E/ADM3068E are full duplex RS-485 transceiver options.
The RS-485 transceivers are available in a number of spacesaving packages, including the 10-lead, 3 mm × 3 mm lead frame chip-scale package (LFCSP), the 8-lead or 10-lead, 3 mm × 3 mm mini small outline package (MSOP), and the 8-lead or 14-lead, narrow body standard small outline packages (SOIC_N). Models with operating temperature ranges of −40°C to +125°C and −40°C to +85°C are available.
Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit. If a significant temperature increase is detected in the internal driver circuitry during fault conditions, this feature forces the driver output into a high impedance state.
The ADM3061E/ADM3062E/ADM3063E/ADM3064E/ ADM3065E/ADM3066E/ADM3067E/ADM3068E guarantee a logic high receiver output when the receiver inputs are shorted, open, or connected to a terminated transmission line with all drivers disabled.
Table 2 presents an overview of the ADM3061E/ADM3062E/ ADM3063E/ADM3064E/ADM3065E/ADM3066E/ADM3067E/ ADM3068E data rate capability across temperature, power supply, and package options. Refer to the Ordering Guide section for model numbering.
Applications
- Industrial fieldbuses
- Process control
- Building automation
- PROFIBUS networks
- Motor control servo drives and encoders
Applications
Building Technology
- Building Control and Automation
- Heating Ventilation and Air Conditioning
Security and Surveillance
- Access Control
ADuCM4050

The ADuCM4050 microcontroller unit (MCU) is an ultra low power integrated microcontroller system with integrated power management for processing, control, and connectivity. The MCU system is based on the ARM® Cortex®-M4F processor. The MCU also has a collection of digital peripherals, embedded static random access memory (SRAM) and embedded flash memory, and an analog subsystem that provides clocking, reset, and power management capabilities in addition to an analog-to-digital converter (ADC) subsystem.
This data sheet describes the ARM Cortex-M4F core and memory architecture used on the ADuCM4050 MCU. It does not provide detailed programming information about the ARM processor.
The system features include an up to 52 MHz ARM Cortex-M4F processor, 512 kB of embedded flash memory with error correction code (ECC), an optional 4 kB cache for lower active power, and 128 kB system SRAM with parity. The ADuCM4050 features a power management unit (PMU), multilayer advanced microcontroller bus architecture (AMBA) bus matrix, central direct memory access (DMA) controller, and beeper interface.
The ADuCM4050 features cryptographic hardware supporting advanced encryption standard (AES)-128 and AES-256 with secure hash algorithm (SHA)-256 and the following modes: electronic code book (ECB), cipher block chaining (CBC), counter (CTR), and cipher block chaining-message authentication code (CCM/CCM*) modes.
The ADuCM4050 has protected key storage with key wrap/ unwrap, and keyed hashed message authentication code (HMAC) with key unwrap.
The ADuCM4050 supports serial port (SPORT), serial peripheral interface (SPI), I2C, and universal asynchronous receiver/ transmitter (UART) peripheral interfaces.
The ADuCM4050 features a real-time clock (RTC), general-purpose and watchdog timers, and programmable general-purpose input/output (GPIO) pins. There is a hardware cyclic redundancy check (CRC) calculator with programmable generator polynomial. The device also features a power on reset (POR) and power supply monitor (PSM), a 12-bit successive approximation register (SAR) ADC, a red/green/blue (RGB) timer for driving RGB LED, and a true random number generator (TRNG).
To support low dynamic and hibernate power management, the ADuCM4050 MCU provides a collection of power modes and features such as dynamic- and software-controlled clock gating and power gating.
For full details on the ADuCM4050 MCU, refer to the ADuCM4050 Ultra Low Power ARM Cortex-M4F MCU with Integrated Power Management Hardware Reference.
Product Highlights
- Ultra low power consumption.
- Robust operation.
- Full voltage monitoring in deep sleep modes.
- ECC support on flash.
- Parity error detection on SRAM memory.
- Leading edge security.
- Fast encryption provides read protection to user algorithms.
- Write protection prevents device reprogramming by unauthorized code.
- Failure detection of 32 kHz low frequency external crystal oscillator (LFXTAL) via interrupt.
- SensorStrobe™ for precise time synchronized sampling of external sensors. Works in hibernate mode, resulting in drastic current reduction in system solutions. Current consumption reduces by 10 times when using, for example, the ADXL363 accelerometer. Software intervention is not required after setup. No pulse drift due to software execution.
Applications
- Internet of Things (IoT)
- Smart agriculture, smart building, smart metering, smart city, smart machine, and sensor network
- Wearables
- Fitness and clinical
- Machine learning and neural networks
Applications
Building Technology
- Building Control and Automation
Internet of Things (IoT)
ADuM4120

The ADuM4120/ADuM4120-1 are 2 A isolated, single-channel drivers that employ Analog Devices, Inc., iCoupler® technology to provide precision isolation. The ADuM4120/ADuM4120-1 provide 5 kV rms isolation in the 6-lead wide body SOIC package with increased creepage. Combining high speed CMOS and monolithic transformer technology, these isolation components provide outstanding performance characteristics, such as the combination of pulse transformers and gate drivers.
The ADuM4120/ADuM4120-1 operate with input supplies ranging from 2.5 V to 6.5 V, providing compatibility with lower voltage systems. In comparison to gate drivers employing high voltage level translation methodologies, the ADuM4120/ ADuM4120-1 offer the benefit of true, galvanic isolation between the input and the output.
Options exist for models with and without an input glitch filter. The glitch filter helps reduce the chance of noise on the input pin triggering an output.
As a result, the ADuM4120/ADuM4120-1 provide reliable control over the switching characteristics of insulated gate bipolar transistor (IGBT)/metal-oxide semiconductor field effect transistor (MOSFET) configurations over a wide range of switching voltages.
Applications
- Switching power supplies
- IGBT/MOSFET gate drivers
- Industrial inverters
- Gallium nitride (GaN)/silicon carbide (SiC) power devices
Applications
Building Technology
- Heating Ventilation and Air Conditioning
- Building Control and Automation
System and Sub-System Platforms
FLEXMC MOTOR CONTROL LOW VOLTAGE KIT

The FlexMC Motor Control Development PlatformTM is a rapid development system for any motor control solution. The FlexMC KitTM enables you to accelerate time-to-market and increase performance with powerful model-based design tools. This solution combines hardware and software with out-of-the-box functionality for a permanent magnet synchronous motor (PMSM) with hall sensor, encoder, or sensorless feedback.
Solution Overview
The FlexMC Kit has the hardware and software required to spin the kit’s motor under open or closed loop speed control in conjunction with an ADSP-CM408 EZ Kit. The software is provided as an executable file which can be flashed to the ADSP-CM408 processor using the ADI serial boot-loader utility. A .NET-based graphical user interface (GUI) is provided to enable motor start-stop, speed control, and data visualization. Sample C-code is also provided for open loop Volts/Hertz control of a motor.
The FlexMC Kit hardware comes in two variants. The kit option includes a PMSM motor with encoder, a 24V motor drive board, and a power supply. The board-only option includes the motor drive board only. In this case users can connect their own motor and power source. In both cases, the power board connects directly to an Analog Devices ADSP-CM408 Mixed-Signal Control Processor EZ Kit (sold separately). Easy connection to motors and the CM408 EZ Kit make this system perfect for your prototyping needs.
Additional rapid prototyping MATLAB/Simulink tools and support can be obtained by purchasing this kit from Boston Engineering
Low Voltage Kit Contents
Hardware:
- Low Voltage Motor Control Board, 12-36V, 10A
- 24V, 3-phase PMSM (not included in board-only option)
- Quadrature Incremental Encoder (not included in board-only option)
- SOLD SEPERATELY: ADI ADSP-CM408 EZ Kit
Software:
- Executable Demo Application
- Sample application C code
Note: To get started, download software and to get technical support on the FlexMC kit go to EngineerZone:
Sample C Code for EV-MCS-LVDRV-Z platform
Getting started with the EV-MCS-LVDRV-Z motor control platform
Applications
FLEXMC MOTOR CONTROL UNIVERSAL AC KIT

Solution Overview
The FlexMC Kit has the hardware and software required to spin the motor under open or closed loop speed control. With the FlexMC Kit, you model your system in MATLAB and Simulink, generate the C code, and then deploy. Utilizing system modeling and design concepts, the FlexMC Kit also contains libraries in MATLAB and Simulink for additional access to proven methodologies. The FlexMC Kit hardware includes a PMSM motor with encoder and a Boston Engineering universal AC input drive board that connects directly to an Analog Devices ADSP-CM408 Mixed-Signal Control Processor EZ Kit. Users can prototype with PC power using MATLAB and Simulink, then deploy with the FlexMC Kit. Easy connection to motors and the ADSP-CM408 EZ Kit make this system perfect for your prototyping needs.
Hardware:
- Universal AC Voltage Motor Control Board, 95-250VAC, 400W
- 3-phase Brushless PMSM
- Quadrature Incremental Encoder'
- SOLD SEPERATELY: ADSP-CM408 EZ-KIT
Software:
- Simulink Libraries
- C Libraries
- Demo Application
Note: The FlexMC Motor Control Universal AC Kit is manufactured, distributed and supported by Boston Engineering (BE) exclusively. BE assumes all responsibility for the proper installation and operation of the kit.
Applicable Parts
Applications
Building Technology
- LED General Lighting
ISOLATED INVERTER PLATFORM

Solution Overview
The isolated inverter platform and isolated inverter platform with full featured IGBT drivers offer a power board that runs from a dc input and provides a three-phase variable frequency, variable voltage, and variable dead-time PWM output to a three-phase motor or load. The inverter is provided as an open loop platform, but feedback signals are provided to enable the application developer to close the control loop. For the isolated inverter platform (EV-MCS-ISOINV-Z), two isolated current,phase to phase and dc bus voltage feedback signals are provided to the control side of the board via sigma-delta modulators, and these can be used for development of control algorithms. The inverter is made up of a three-phase six-IGBT bridge, with the IGBTs rated at 1200V and driven by three dual isolated gate drivers (ADuM4223). For the isolated inverter platform with full featured IGBT drivers (EV-MCS-ISOINVEP-Z), three isolated phase current and dc bus voltage feedback signals are provided to the control side of the board via sigma-delta modulators, and these can be used for development of control algorithms. The inverter is made up of a three-phase six-IGBT bridge, with the IGBTs rated at 1200V and driven by six individual isolated gate drivers (ADuM4135) with desaturation protection and Miller clamp. For both platforms, a DC – rather than AC- input is provided to allow flexibility on the dc bus voltage level (rather than it being limited to the ac line peak).
The board is designed to work from a DC supply in the range 24Vdc-800Vdc.. The power board is rated up to 2kVA without forced air cooling. Additional power throughput can be achieved with fan cooling added. A series connected diode implements a half-wave rectifier at the input, so if needed, the power board can be driven from an AC supply. However output power is limited in this case. If a full AC front-end is required, the inverter platform can be utilized in conjunction with the ADP1047 evaluation board up to 300W, or the ADP1048 evaluation board up to 600W. An isolated I2C interface is provided on the inverter board so that the ADP104x evaluation board can be easily controlled by the same processor/FPGA interface. The inverter kit has the hardware and software required to spin a three-phase motor under open loop speed control in conjunction with an ADSP-CM408 EZ Kit. The demo software is provided as an IAR Embedded Workbench C project or an executable file which can be flashed to the ADSP-CM408 processor using the ADI serial boot-loader utility. A .NET-based graphical user interface (GUI) is provided to enable motor start-stop, open loop Volts/Hertz speed control, and data visualization.
Kit Contents
Hardware:
- Isolated Inverter Board, 24-800Vdc, 2Kva (2 Versions)
- Adapter board for connection to EZkit
- USB to serial adapter for using GUI
- SOLD SEPERATELY: ADI ADSP-CM408 EZ Kit
Software:
- IAR Embedded Workbench C project
- Executable Demo Application
- .NET-based Graphical User Interface (GUI)
Note:
- To download software and to get technical support on the isolated inverter platform with basic gate drivers go to https://ez.analog.com/docs/DOC-12105
- To download software and to get technical support on the isolated inverter platform with full featured IGBT drivers go to https://ez.analog.com/docs/DOC-12608
Applicable Parts
Applications
FMCMOTCON2

Two motors can be driven at the same time, each motor having its separate power supply. The system incorporates high quality power sources; reliable power, control, and feedback signals isolation; accurate measurement of motor current & voltage signals; high speed interfaces for control signals to allow fast controller response; industrial Ethernet high speed interfaces; single ended Hall, differential Hall, encoder and resolver interfaces; digital position sensors interface; flexible control with a FPGA/SoC interface.
The kit consists of two boards: a controller board and a drive board. An optional AD-DYNO2-EBZ dynamometer can also be purchased through Avnet and is intended to be an extension of the drive system.
Controller Board
- Digital board for interfacing with the low and high voltage drive boards
- Compatible with all Xilinx FPGA platforms with FMC LPC or HPC connectors
- FMC signals voltage adaptation interface for seamless operation on all FMC voltage levels
- Fully isolated digital control and feedback signals
- Isolated Xilinx XADC interface
- 2 x Gbit Ethernet PHYs for high speed industrial communication, with 3rd party EtherCAT support
- Single ended Hall, Differential Hall, Encoder, Resolver interfaces
- Digital sensors interfaces
- EnDat
- BISS Interface
Drive Board
- Drives motors up to 48V @ 20A
- Drives 2 motors simultaneously
- High frequency drive stage implemented with ADI isolated gate drivers
- Supported motor types
BLDC
PMSM
Brushed DC
Stepper (bipolar / unipolar) - Integrated over current protection
- Reverse voltage protection
- Current and Voltage measurement using isolated ADCs
- BEMF zero cross detection for sensorless control of PMSM or BLDC motors
- Separate voltage supplies for the 2 motors so that the motors don't influence each other
Dynamometer System with Embedded Control
- Two BLDC motors connected by a rigid couple in a dyno setup, which can be used to test real-time motor control performance.
- One BLDC motor acts as an electronically adjustable load and is driven by the embedded control system. This motor can be directly connected to the FMC motor drive to get complex / active loads. The load can be driven also by the AD-FMCMOTCON2-EBZ to implement dynamic load profiles.
- The other BLDC motor is driven by the FMC motor drive.
- Measurement and display of load motor current
- Measurement and display of load motor speed
- External control using Analog Discovery and MathWorks Instrumentation Control Toolbox
Software:
Example reference designs showing how to use the platform with Xilinx® FPGAs or SoCs and high performance control algorithms from Mathworks® are provided together with the hardware. Information on the FMC board, and how to use it, the design package that surrounds it, and the software which can make it work, can be found by clicking the software link.
Applicable Parts
ADUM7640
1 kV RMS Six-Channel Digital Isolators (6/0 Channel Directionality)
ADUM7641
1 kV RMS Six-Channel Digital Isolators (5/1 Channel Directionality)
ADM2486
2.5 kV Signal Isolated, High Speed (20 Mbps), Half Duplex RS-485 Transceiver
ADUM1400
Quad-Channel Digital Isolator (4/0 Channel Directionality)
ADUM1402
Quad-Channel Digital Isolator (2/2 Channel Directionality)
ADG3308
Low Voltage, 1.15 V to 5.5 V, 8-Channel Bidirectional Logic Level Translator
AD8646
24 MHz Rail-to-Rail Dual Op Amp
AD8137
Low Cost, Low Power Differential ADC Driver
ADUM5000
Isolated DC/DC Converter
AD2S1210
Variable Resolution, 10-Bit to 16-Bit R/D Converter with Reference Oscillator
ADN4662
Single, 3 V, CMOS, LVDS Differential Line Receiver
ADM2486
2.5 kV Signal Isolated, High Speed (20 Mbps), Half Duplex RS-485 Transceiver
ADG759
CMOS Low Voltage, 3 ohms 4-Channel Multiplexer
ADUM1250
Hot Swappable, Dual I2C Isolators
CMP04
Quad Low Power, Precision Comparator
ADP2301
1.2 A, 20 V, 1.4 MHz non-synchronous step-down switching regulator
ADP1621
Constant-Frequency, Current-Mode Step-Up DC-to-DC Controller
ADUM7223
Isolated Precision Half-Bridge Driver, 4 A Output
ADUM5230
Isolated Half-Bridge Driver with Integrated High-Side Supply
AD8207
Zero Drift, High Voltage, Bidirectional Difference Amplifier
AD7403
16-Bit, Isolated Sigma-Delta Modulator
AD7403
16-Bit, Isolated Sigma-Delta Modulator
AD7402
16-Bit, Isolated Sigma-Delta Modulator
AD7405
16-Bit, Isolated Sigma-Delta Modulator, LVDS Interface
Applications
Reference Designs
CN0280

The circuit in Figure 1 is a completely isolated current sensor with an isolated power source. The circuit is highly robust and can be mounted close to the sense resistor for accurate measurements and minimum noise pickup. The output is a single 16 MHz bit stream from a sigma-delta modulator that is processed by a DSP using a sinc3digital filter.
The circuit is ideal for monitoring the ac current in solar photovoltaic (PV) converters where the peak ac voltage can be several hundred volts, and the current can vary between a few mA and 25 A.

Applicable Parts
ADP7182
–28 V, −200 mA, Low Noise, Linear Regulator
ADM8829
Switched Capacitor Voltage Inverter
AD7401A
Isolated Sigma-Delta Modulator
AD8639
16V Dual Auto-Zero, Rail-to-Rail Output, Precision Amplifier
ADP121
150 mA, Low Quiescent Current, CMOS Linear Regulator in 5-Lead TSOT or 4-Ball WLCSP
ADUM6000
Isolated, 5 kV, DC/DC Converter
ADP7104
20 V, 500 mA, Low Noise, CMOS LDO
Applications
CN0185

The circuit shown in Figure 1 is a complete low cost implementation of an analog-to-analog isolator. The circuit provides isolation of 2500 V rms (1 minute per UL 1577).
The circuit is based on the AD7400A, a second-order, sigma-delta (Σ-Δ) modulator with a digitally isolated 1-bit data stream output. The isolated analog signal is recovered with a fourth-order active filter based on the dual, low noise, rail-to-rail AD8646 op amp. With the ADuM5000 as the power supply for the isolated side, the two sides are completely isolated and use only one power supply for the system. The circuit has 0.05% linearity and benefits from the noise shaping provided by the modulator of the AD7400A and the analog filter. The applications of the circuit include motor control and shunt current monitoring, and the circuit is also a good alternative to isolation systems based on optoisolators.

Applicable Parts
Applications
CN0373

The circuit shown in Figure 1 provides a completely isolated connection between the popular USB bus and an RS-485 or RS-232 bus. Both signal and power isolation ensures a safe USB device interface to an industrial bus or debug port, allowing TIA/EIA-485/232 bus traffic monitoring and the convenience of sending and receiving commands to and from a PC that is not equipped with an RS-485 or RS-232 port.
Isolation in this circuit increases system safety and robustness by providing protection against electrical line surges and breaks the ground connection between bus and digital pins, thereby removing possible ground loops within the system.
The TIA/EIA RS-485 bus standard is one of the most widely used physical layer bus designs in industrial and instrumentation applications. RS-485 offers differential data transmission between multiple systems, often over very long distances. RS-485 communication offers additional robustness through differential communication when compared to the RS-232 standard.
TIA/EIA RS-232 devices are widely used in industrial machines, networking equipment, and scientific instruments. In modern personal computers, which are often used for debugging network problems, USB has displaced RS-232 from most of its peripheral interface roles, and many computers do not come equipped with RS-232 ports. The circuit in Figure 1 offers a robust and compact solution for both RS-232 and RS-485 interfaces.

Applicable Parts
ADM3252E
Isolated, Dual Channel RS-232 Line Driver/Receiver
ADM2587E
2.5 kV Signal and Power Isolated, ±15 kV ESD Protected, Full/Half Duplex RS-485 Transceiver (500kbps)
ADUM3160
Full/Low Speed USB Digital Isolator
ADUM3070
Isolated Switch Regulator With Integrated Feedback
ADP190
Logic Controlled, High-Side Power Switch
ADP7102
20 V, 300 mA, Low Noise, CMOS LDO
Applications
Consumer
CN0368

The compact two-chip circuit shown in Figure 1 provides a contactless anisotropic magnetoresistive (AMR) measurement solution ideal for either angle or linear position measurements. The two-chip system is capable of providing better than 0.2° angular accuracy over 180°, and linear accuracy of 2 mil (0.002 inch) over a 0.5 inch range, depending on the size of the magnet used.
The circuit is ideal for applications where high speed, accurate, noncontact angle and length measurements are critical, such as machine tool speed control, crane angle control, brushless dc motors, and other industrial or automotive applications.

Applicable Parts
Applications
Aerospace and Defense
- Missiles and Precision Munitions
CN0313

The circuits shown in Figure 1 demonstrate proven and tested electromagnetic compatibility (EMC) compliant solutions for three protection levels for popular RS-485 communication ports using the ADM3485E transceiver. Each solution was tested and characterized to ensure that the dynamic interaction between the transceiver and the protection circuit components functions correctly together to protect against the electrostatic discharge (ESD), electrical fast transients (EFT), and surge immunity specified in IEC 61000-4-2, IEC 61000-4-4, and IEC 61000-4-5, respectively. The circuits offer proven protection for RS-485 interfaces using the ADM3485E to the ESD, EFT, and surge levels often encountered in harsh environments.

Applicable Parts
ADM3485E
3.3 V, ±15 kV ESD-Protected, RS-485/RS-422 Transceiver (Half Duplex, 12Mbps, DE/RE)
Applications
Building Technology
- Heating Ventilation and Air Conditioning
CN0256

Low voltage differential signaling (LVDS) is an established standard (TIA/EIA-644) for low power, high speed, point-to-point communication. It is used in instrumentation and control applications to send high volumes of data across backplanes or short cable links, or to distribute high speed clocks to different parts of an application circuit.
The circuit shown in Figure 1 demonstrates isolation of an LVDS interface. Advantages of isolating LVDS interfaces include protection against fault conditions (safety isolation) and improving robustness (functional isolation).
The ADuM3442 provides digital isolation of the logic inputs to the ADN4663 LVDS driver and the logic outputs from the ADN4664 LVDS receiver. Together with provision of isolated power using the ADuM5000, a number of challenges to isolating LVDS links in industrial and instrumentation applications are met that include the following:
- Isolation of the logic signals to/from the LVDS drivers/ receivers, ensuring standard LVDS communication on the bus side of the circuit.
- Highly integrated isolation using just two additional wide-body SOIC devices, the ADuM3442 and ADuM5000, to isolate the standard LVDS devices, the ADN4663 and ADN4664.
- Low power consumption compared to traditional isolation (opto-couplers). Low power operation is a feature of LVDS applications.
- Multiple channels of isolation. In LVDS applications, parallel channels are used to maximize data throughput. This circuit demonstrates quad-channel isolation (in this case, two transmit and two receive channels).
- High speed operation; the isolation can operate at up to 150 Mbps, facilitating basic LVDS speed requirements.
The circuit shown in Figure 1 isolates a dual-channel LVDS line driver and a dual-channel LVDS receiver. This allows demonstration of two complete transmit and receive paths on a single board.

Applicable Parts
Applications
CN0196

Modern microprocessors and microconverters are generally low power and operate on low supply voltages. Source and sink current for 2.5 V CMOS logic outputs ranges from μA to mA . Driving an H-bridge switching 12 V with a 4 A peak current requires the use of carefully selected interface and level translation components, especially if low jitter is needed.
The ADG787 is a low voltage CMOS device that contains two independently selectable single-pole double-throw (SPDT) switches. With a 5 V dc power supply, a voltage as low as 2 V is a valid high input logic voltage. Therefore, the ADG787 provides appropriate level translation from the 2.5 V controlling signal to the 5 V logic level needed to drive the ADuM7234 half-bridge driver.
The ADuM7234 is an isolated, half-bridge gate driver that employs Analog Devices’ iCoupler® technology to provide independent and isolated high-side and low-side outputs making it possible to use N-channel MOSFETs exclusively in the H-bridge. There are several benefits in using N-channel MOSFETs: N-channel MOSFETs typically have one third of the on resistance of P-channel MOSFETs and higher maximum current; they switch faster, thereby reducing power dissipation; and the rise time and fall time is symmetrical.
The 4 A peak drive current of the ADuM7234 ensures that the power MOSFETs can switch on and off very fast, thereby minimizing the power dissipation in the H-bridge stage. The maximum drive current of the H-bridge in this circuit can be up to 85 A, which is limited by the maximum allowable MOSFET current.
The ADuC7061 is a low power, ARM7 based precision analog microcontroller with integrated pulse width modulated (PWM) controllers that have outputs that can be configured to drive an H-bridge after suitable level translation and conditioning.

Applicable Parts
ADUM3100
Digital Isolator, Enhanced System-Level ESD Reliability
ADUC7061
Low-Power, Precision Analog Microcontroller, Dual Σ-Δ ADCs, Flash/EE, ARM7TDMI
ADUM7234
Isolated Precision Half-Bridge Driver, 4 A Output
ADCMP350
Comparator & 0.6V Reference in 4-SC70 w/ Open-Drain Active-Low Output
ADP1720
50 mA, High Voltage, Micropower Linear Regulator
ADG787
2.5 Ω CMOS Low Power Dual 2:1 Mux/Demux USB 1.1 Switch
Applications
CN0218

The circuit shown in Figure 1 monitors current in systems with high positive common-mode dc voltages of up to +500 V with less than 0.2% error. The load current passes through a shunt resistor, which is external to the circuit. The shunt resistor value is chosen so that the shunt voltage is approximately 500 mV at maximum load current.

The AD8212 accurately amplifies a small differential input voltage in the presence of large positive common-mode voltages greater than 500 V when used in conjunction with an external PNP transistor.
Galvanic isolation is provided by the ADuM5402 quad channel isolator. This is not only for protection but to isolate the downstream circuitry from the high common-mode voltage. In addition to isolating the output data, the ADuM5402 digital isolator can also supply isolated +3.3 V for the circuit.
The measurement result from the AD7171 is provided as a digital code utilizing a simple 2-wire, SPI-compatible serial interface.
This combination of parts provides an accurate high voltage positive rail current sense solution with a small component count, low cost, and low power.
Applicable Parts
Applications
CN0190

Modern complex systems using various combinations of FPGAs, CPUs, DSPs, and analog circuits typically require multiple voltage rails. In order to provide high reliability and stability, the power system must not only provide the multiple voltage rails but also include proper sequencing control and necessary protection circuits.

The module shown in Figure 1 is a reference solution for multivoltage power systems. The design can easily be adapted to customer requirements and provides the most popular system voltages. The circuit uses an optimum combination of switching and linear regulators to provide an overall efficiency of approximately 78% when the outputs are fully loaded. Output power delivered under full load is approximately 25 W.
Applicable Parts
ADCMP670
Dual Low Power 1.5% Comparator With 400 mV Reference
ADM1178
Hot Swap Controller and Digital Power Monitor with ALERTB Output
ADP1864
Constant Frequency Current-Mode Step-Down DC-to-DC Controller in TSOT
ADM1066
Super Sequencer® with Margining Control and Auxiliary ADC Inputs
ADP1741
2 A, Low VIN, Dropout, CMOS Linear Regulator
ADP121
150 mA, Low Quiescent Current, CMOS Linear Regulator in 5-Lead TSOT or 4-Ball WLCSP
ADP2108
Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
ADP1613
650 kHz /1.3 MHz Step-Up PWM DC-to-DC Switching Converter with 2.0 A Current Limit
ADP2114
Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
ADP1872
Synchronous Current-Mode Buck Controller with Constant On-time and 0.6 V Reference Voltage
ADP151
Ultralow Noise, 200 mA, CMOS Linear Regulator
ADP2300
1.2 A, 20 V, 700 kHz Nonsynchronous Step-down Switching Regulator
ADP2301
1.2 A, 20 V, 1.4 MHz non-synchronous step-down switching regulator
ADM1170
1.6 V to 16.5 V Hot Swap Controller
AD628
High Common-Mode Voltage, Programmable Gain Difference Amplifier
ADCMP350
Comparator & 0.6V Reference in 4-SC70 w/ Open-Drain Active-Low Output
Applications
CN0240

This circuit, shown in Figure 1, monitors bidirectional current from sources with dc voltages of up to ±270 V with less than 1% linearity error. The load current passes through a shunt resistor, which is external to the circuit. The shunt resistor value is chosen so that the shunt voltage is approximately 100 mV at maximum load current.
The AD629 amplifier accurately measures and buffers (G = 1) a small differential input voltage and rejects large positive common-mode voltages up to 270 V.
The dual AD8622 is used to amplify the output of the AD629 by a factor of 100. The AD8475 funnel amplifier attenuates the signal (G = 0.4), converts it from single-ended to differential, and level shifts the signal to satisfy the analog input voltage range of the AD7170 sigma-delta ADC.
Galvanic isolation is provided by the ADuM5402 quad channel isolator. This is not only for protection but also to isolate the downstream circuitry from the high common-mode voltage. In addition to isolating the output data, the ADuM5402 digital isolator can supply isolated +5.0 V for the circuit.
The measurement result from the AD7170 is provided as a digital code utilizing a simple 2-wire, SPI-compatible serial interface.
This combination of parts provides an accurate high voltage positive and negative rail current sense solution with a small component count, low cost, and low power.

Applicable Parts
AD629
High Common-Mode Voltage, Difference Amplifier
ADUM5402
Quad-Channel, 2.5 kV Isolators with Integrated DC-to-DC Converter (2/2 channel directionality)
ADR435
Ultralow Noise XFET® Voltage References with Current Sink and Source Capability
AD8622
Low Power, Low Noise, Low Bias Current, Precision Dual RRO Op Amp
AD7170
12-Bit Low Power Σ−Δ ADC
AD8475
Precision, Selectable Gain, Fully Differential Funnel Amplifier
Applications
CN0371

The circuit shown in Figure 1 is a complete linear variable differential transformer (LVDT) signal conditioning circuit that can accurately measure linear position or linear displacement from a mechanical reference. Synchronous demodulation in the analog domain is used to extract the position information and provides immunity to external noise. A 24-bit, Σ-Δ analog-to-digital converter (ADC) digitizes the position output for high accuracy.
LVDTs utilize electromagnetic coupling between the movable core and the coil assembly. This contactless (and hence frictionless) operation is a primary reason for why they are widely used in aerospace, process controls, robotics, nuclear, chemical plants, hydraulics, power turbines, and other applications where operating environments can be hostile and long life and high reliability are required.
The entire circuit, including the LVDT excitation signal, consumes only 10 mW of power. The circuit excitation frequency and output data rates are SPI programmable. The system has a programmable bandwidth vs. dynamic range trade-off. It supports bandwidths of over 1 kHz, and at a bandwidth of 20 Hz, the circuit has a dynamic range of 100 dB, making it ideal for precision industrial position and gauging applications.

Applicable Parts
Applications
Building Technology
- Building Control and Automation
CN0301

The circuit shown in Figure 1 is a complete adjustment-free linear variable differential transformer (LVDT) signal conditioning circuit. This circuit can accurately measure linear displacement (position).
The LVDT is a highly reliable sensor because the magnetic core can move without friction and does not touch the inside of the tube. Therefore, LVDTs are suitable for flight control feedback systems, position feedback in servomechanisms, automated measurement in machine tools, and many other industrial and scientific electromechanical applications where long term reliability is important.
This circuit uses the AD698 LVDT signal conditioner that contains a sine wave oscillator and a power amplifier to generate the excitation signals that drive the primary side of the LVDT. The AD698 also converts the secondary output into a dc voltage. The AD8615 rail-to-rail amplifier buffers the output of the AD698 and drives a low power 12-bit successive approximation analog-to-digital converter (ADC). The system has a dynamic range of 82 dB and a system bandwidth of 250 Hz, making it ideal for precision industrial position and gauging applications.
The signal conditioning circuitry of the system consumes only 15 mA of current from the ±15 V supply and 3 mA from the +5 V supply.
This circuit note discusses basic LVDT theory of operation and the design steps used to optimize the circuit shown in Figure 1 for a chosen bandwidth, including noise analysis and component selection considerations.

Applicable Parts
Applications
Building Technology
- Building Control and Automation
CN0288

The circuit shown in Figure 1 is a complete adjustment-free linear variable differential transformer (LVDT) signal conditioning circuit. This circuit can accurately measure linear displacement (position).
The LVDT is a highly reliable sensor because the magnetic core can move without friction and does not touch the inside of the tube. Therefore, LVDTs are suitable for flight control feedback systems, position feedback in servomechanisms, automated measurement in machine tools, and many other industrial and scientific electromechanical applications where long term reliability is important.
This circuit uses the AD598 LVDT signal conditioner that contains a sine wave oscillator and a power amplifier to generate the excitation signals that drive the primary side of the LVDT. The AD598 also converts the secondary output into a dc voltage. The AD8615 rail-to-rail amplifier buffers the output of the AD598 and drives a low power 12-bit successive approximation analog-to-digital converter (ADC). The system has a dynamic range of 82 dB and a system bandwidth of 250 Hz, making it ideal for precision industrial position and gauging applications.
The signal conditioning circuitry of the system consumes only 15 mA of current from the ±15 V supply and 3 mA from the +5 V supply, making this ideal for remote applications. The circuit can operate a remote LVDT from up to 300 feet away, and the output can drive up to 1000 feet.
This circuit note discusses basic LVDT theory of operation and the design steps used to optimize the circuit shown in Figure 1 for a chosen bandwidth, including noise analysis and component selection considerations.

Applicable Parts
Applications
Building Technology
- Building Control and Automation
CN0276

The circuit shown in Figure 1 is a complete high performance resolver-to-digital (RDC) circuit that accurately measures angular position and velocity in automotive, avionics, and critical industrial applications where high reliability is required over a wide temperature range.

The circuit has an innovative resolver rotor driver circuit that has two modes of operation: high performance and low power. In the high performance state, the system operates on a single 12 V supply and can supply 6.4 V rms (18 V p-p) to the resolver. In the low power state, the system operates on a single 6 V supply and can supply 3.2 V rms (9.2 V p-p) to the resolver, with less than 100 mA of current consumption. Active filtering is provided in both the driver and receiver to minimize the effects of quantization noise.
The maximum tracking rate of the RDC is 3125 rps in the 10-bit mode (resolution = 21 arc min) and 156.25 rps in the 16-bit mode (resolution = 19.8 arc sec).
Applicable Parts
AD8692
Low Cost, Low Noise, Dual CMOS Rail-to-Rail Output Operational Amplifier
AD2S1210
Variable Resolution, 10-Bit to 16-Bit R/D Converter with Reference Oscillator
ADG1611
1 Ω Typical On Resistance, ±5 V, +12 V, +5 V, and +3.3 V Quad SPST Switches
ADG1612
1 Ω Typical On Resistance, ±5 V, +12 V, +5 V, and +3.3 V Quad SPST Switches
ADM6328
Ultralow Power, 3-Lead, SOT-23, Microprocessor Reset Circuit, Active-Low Open-Drain Output, 0.5 µA Supply Current
ADP7104
20 V, 500 mA, Low Noise, CMOS LDO
AD8397
Rail-to-Rail, High Output Current Amplifier
AD8694
Low Cost, Low Noise, CMOS Rail-to-Rail Output Quad Op Amp
Applications
Building Technology
- Building Control and Automation
|
Industrial Ethernet
Designing motion and robotic controls to use Industrial Ethernet brings a number of challenges. There is the need to support multiple communication protocols and standards in a deterministic way while considering the future requirements for Time Sensitive Networking (TSN). ADI has put considerable research into finding the answers and is already collaborating with leading industry partners to bring Ethernet to the factory floor.
|
Interface and Isolation
Learn more about digital interfaces and digital isolation solutions that can meet field bus and peripheral communications standards. Discover how innovative technologies have led to isolation solutions without many of the constraints found in optocouplers.

Power by Linear
Form factor, efficiency and EMI. In the data-rich and sensor-filled factories of Industry 4.0, these performance metrics have never been more critical. Discover how ADI’s unique technologies can deliver high results in each area, without compromising performance.
Latest Resources
All Resources
Application Notes
- AN-1397: Using the ADM3065E 50 Mbps RS-485 Transceiver in EnDat Motor Control Encoder Applications (Rev. A) PDF
- AN-1407: ADSP-CM402F/ADSP-CM403F/ADSP-CM407F/ADSP-CM408F/ADSP-CM409F Pulse Width Modulator in AC Motor Control Applications (Rev. 0) PDF
- AN-1316: Generating Multiple Isolated Bias Rails for IGBT Motor Drives with Flyback, SEPIC, and Ćuk Combination (Rev. 0) PDF
- AN-1265: Isolated Motor Control Feedback Using the ADSP-CM402F/ADSP-CM403F/ADSP-CM407F/ADSP-CM408F SINC Filters and the AD7401A (Rev. B) PDF
- AN-1308: Common-Mode Step Response of Current Sense Amplifiers (Rev. A) PDF
Design Notes Page
Product Selector Card
Technical Articles
- Going Faster and Further with Fieldbus
- Robust Ethernet Physical Layer Solutions for Time Critical Communications in Harsh Industrial Environments
- Your Factory Could Be the Next Target for a Cyber Attack. Will You Be Prepared?
- LIDAR Perception Challenges
- Simple Realization of a Fully Integrated 4-Wire RTD Temperature Measurement System for High Precision Measurement Applications
Product Selection Guide
Circuit Note
Solutions Bulletins & Brochures
Webcasts
- Architecting Industrial Robots for Global Challenges
- The Future of Industrial Ethernet Connectivity
- Scalable Industrial Ethernet to Accelerate Industry 4.0
- Gigabit Digital Isolators for Video, Converters, Communications
- How to Measure Gate Drive Waveforms
Videos
- New Testing CMTI for iCoupler Gate Drivers
- New At-Home Shopping Comes Alive with 3D Scanning from Analog Devices
- New Home Robotics Powered by 3D Mapping from Analog Devices
- New Gesture and Motion Tracking Using ADIs Time of Flight Technology
- New People Tracking Using Analog Devices Time-of-Flight Solutions
Press Release
Analog Dialogue
- Timing Challenges in Multiaxis Robotics and Machine Tool Applications
- Part 1: Optimized Sigma-Delta Modulated Current Measurement for Motor Control
- Synchronization of Multiaxis Motion Control over Real-Time Networks
- An Engineering Walk Through Virtual Eval, ADI's Online Data Converter Product Evaluation Tool
- Four Quick Steps to Production: Using Model-Based Design for Software-Defined Radio (Part 4)