ADR4525
Ultra-Low-Noise, High-Accuracy 2.5V Voltage Reference
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Features
- Maximum temperature coefficient (TCVOUT):
- 0.8 ppm/°C (D grade 0°C to 70°C)
- 1 ppm/°C (C grade 0°C to 70°C)
- 2 ppm/°C (B grade −40°C to +125°C)
- 4 ppm/°C (A grade −40°C to +125°C)
- Output noise (0.1 Hz to 10 Hz):
- 1 μV p-p at VOUT of 2.048 V typical
- Initial output voltage error:
- B, C, D grade: ±0.02% (maximum)
- Input voltage range: 3 V to 15 V
- Operating temperature:
- A grade and B grade: −40°C to +125°C
- C grade and D grade: 0°C to +70°C
- Output current: +10 mA source/−10 mA sink
- Low quiescent current: 950 μA (maximum)
- Low dropout voltage: 300 mV at 2 mA (VOUT ≥ 3 V)
- 8-lead SOIC package and LCC package
- AEC-Q100 qualified for automotive applications
- Long-term drift: 8 ppm typical at 4500 hours
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The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 devices are high precision, low power, low noise voltage references featuring ±0.02% B, C, and D grade maximum initial error, excellent temperature stability, and low output noise.
This family of voltage references uses an innovative core topology to achieve high accuracy while offering industry-leading temperature stability and noise performance. The low, thermally induced output voltage hysteresis and low long-term output voltage drift of the devices also improve system accuracy over time and temperature variations.
A maximum operating current of 950 μA and a maximum low dropout voltage of 300 mV allow the devices to function very well in portable equipment.
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 series of references are each provided in an 8-lead SOIC and are available in a wide range of output voltages, all of which are specified over the extended industrial temperature range of −40°C to +125°C.
The ADR4525, ADR4540, and ADR4550 are also available in D, which are in 8 lead LCC package, and C grade with a temperature range of 0°C to 70°C. The ADR4525W, available in an 8‑lead SOIC package, is qualified for automotive applications.
APPLICATIONS
- Precision data acquisition systems
- High resolution data converters
- High precision measurement devices
- Industrial instrumentation
- Medical devices
- Automotive battery monitoring
Ask a Question
Submit your question below and we will return the best answer from ADI’s knowledge database:
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ADR4525
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ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550: Ultralow Noise, High Accuracy Voltage References Data Sheet (Rev.F)
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550：超低噪声、高精度 基准电压源
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
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| ADR4525ARZ |
8-Lead SOIC
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| ADR4525ARZ-R7 |
8-Lead SOIC
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| ADR4525BRZ |
8-Lead SOIC
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| ADR4525BRZ-R7 |
8-Lead SOIC
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| ADR4525CRZ |
8-Lead SOIC
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| ADR4525CRZ-R7 |
8-Lead SOIC
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| ADR4525DEZ | LCC:CER LEADLESS CHIP CARR |
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| ADR4525DEZ-R7 | LCC:CER LEADLESS CHIP CARR |
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| ADR4525WBRZ-R7 |
8-Lead SOIC
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- ADR4525ARZ
- Pin/Package Drawing
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8-Lead SOIC
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- ADR4525ARZ-R7
- Pin/Package Drawing
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8-Lead SOIC
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- ADR4525BRZ
- Pin/Package Drawing
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8-Lead SOIC
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- ADR4525BRZ-R7
- Pin/Package Drawing
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8-Lead SOIC
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- ADR4525CRZ
- Pin/Package Drawing
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8-Lead SOIC
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- ADR4525CRZ-R7
- Pin/Package Drawing
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8-Lead SOIC
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- ADR4525DEZ
- Pin/Package Drawing
- LCC:CER LEADLESS CHIP CARR
- Documentation
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- ADR4525DEZ-R7
- Pin/Package Drawing
- LCC:CER LEADLESS CHIP CARR
- Documentation
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Material Declaration
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Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- ADR4525WBRZ-R7
- Pin/Package Drawing
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8-Lead SOIC
- Documentation
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SamacSys
Software & Part Ecosystem
| Parts | Product Life Cycle | Description | ||
|---|---|---|---|---|
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Positive Linear Regulators (LDO)1 |
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RECOMMENDED FOR NEW DESIGNS |
20V, 200mA, Ultralow Noise, Ultrahigh PSRR Precision DAC/Reference Buffer |
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Evaluation Kits 2
AD-PAARRAY3552R-SL
RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design
Features and Benefits
- Designed to cover full Tx signal chains with integrated MCU and user-friendly GUI for faster and easier integration
- Supports fault event protection - overvoltage (OV), overcurrent (OC), and overtemperature (OT)
- Supports ultrafast sub-µs GaN gate voltage switching ~ (<1 µs)
- Supports ultrafast (<10 µs) fault event protection from detection up to GaN gate pinch-off
- Wide range of gate bias voltages from -10 V to +10 V
- Configurable power-up and power-down sequence
Product Detail
The AD-PAARRAY3552R-SL reference design provides control, protection, and proper biasing sequence for GaN power amplifier (PA) arrays. The design incorporates the AD3553R high-speed, dual-channel, 16-bit DAC to support the ultrafast sub-µs voltage settling time of GaN gates.
Key fault events, including overvoltage, overcurrent, and overtemperature, are effectively managed by the LTC7000, a static switch driver responsible for system fault protection.
The on-board MAX32666 ultralow-power ARM® Cortex®-M4 microprocessor provides essential debug and programming features for a comprehensive software development experience with the system. The system's firmware is built on ADI's open-source no-OS framework and includes a user-friendly graphical interface (GUI) for evaluation. Updates are easily applied through an SWD UART bootloader, streamlining prototyping.
The system can be powered by an external +48 V supply, requiring high current capabilities.
APPLICATIONS
- 5G massive MIMOs
- Macro base stations
| Fault Events | |
| Fault | Default Limit |
| Overvoltage | +55 V |
| Overcurrent | 3.5 A |
| Overtemperature | 75°C |
| Output Ports | |
| Port Name | No. of ports |
| GaN gate ports | 6 |
| +48 V Gan drain ports | 4 |
| +5 V ports | 5 |
| Enable ports | 2 |
| Power Supply | |
| External | +48 V DC at 5 A |
| Operating Conditions | |
| Temperature Range | 45°C to +75°C |
Resources
EVAL-AD5676RARDZ
Evaluation Board for the AD5676R WLCSP
Product Detail
The EVAL-AD5676RARDZ allows users to quickly prototype AD5676R circuits and reduce design time. The AD5676R operates from a single 2.7 V to 5.5 V supply. The AD5676R incorporates an internal 2.5 V reference to give a full-scale output voltage of 2.5 V or 5 V. An ADR4525 is also provided on-board as a 2.5V reference source. A different external reference voltage can be applied via the EXT_REF SMB connector or test pin if needed.
The EVAL-AD5676RARDZ interfaces to the USB port of a PC via a system demonstration platform board (SDP-K1 ). The Analysis | Control | Evaluation (ACE) software is available for download from the EVAL-AD5676RARDZ product page to use with the evaluation board to allow the user to program the AD5676R. A peripheral module interface (PMOD) connection is also available to allow the connection of microcontrollers to the evaluation board without the SDP-K1 board. When a microcontroller is used through the PMOD connection, the SDP-K1 board must be disconnected, and the user is unable to operate the ACE software.
The EVAL-AD5676RARDZ is compatible with the EVAL-SDP-CK1Z (SDP-K1), which should be purchased separately. A typical connection between the EVAL-AD5676RARDZ and the SDP-B controller board is shown in the user guide. For full details, see the AD5676R data sheet, which must be used in conjunction with the user guide when using the EVAL-AD5676RARDZ.
Resources
Tools & Simulations 2
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Lt Spice
Signal Chain Designer - BETA
Reference Designs 6
CN0585
Quad Channel, Low Latency, Data Acquisition and Signal Generation Module
Circuits from the lab
Info:Circuits from the lab
Features and Benefits
- 4 Analog Input Channels with Configurable Voltage Ranges
- 4 Analog Output Channels with Configurable Voltage Ranges
- 200 ns Latency between ADC Measurement and DAC Settling
- Analog Front End Interface Connector
- Modeling and Simulation Compatible with MATLAB and Python
- FMC Connector Interface to FPGA
Part Used 15
Resources
CN0312
Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Synchronous Detectors
Circuits from the lab
Info:Circuits from the lab
Resources
CN0554
±10 V Analog Input and ±15 V Analog Output for Raspberry Pi Platforms
Circuits from the lab
Info:Circuits from the lab
Resources
Videos
2023-02-17
01:00
CN0554: 10V Analog Input and 15V Analog Output for Raspberry Pi
CN0407
Ultrahigh Sensitivity Femtoampere Measurement Platform
Circuits from the lab
Info:Circuits from the lab
Videos
2014-07-24
01:25
sample_iTunes
2017-04-07
01:20
Valeria
2014-02-11
01:44
AnalogDevices-F04
CN0370
16-Bit, Single-Supply LED Current Driver with Less than ±1 LSB Integral and Differential Nonlinearity
Circuits from the lab
Info:Circuits from the lab
Design & Integration Tools
ZIP
970.14 K
CN0255
16-Bit, 100 kSPS, Single Supply, Low Power Data Acquisition System
Circuits from the lab
Info:Circuits from the lab
Reference Designs6
CN0585
Quad Channel, Low Latency, Data Acquisition and Signal Generation Module
CN0312
Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Synchronous Detectors
CN0554
±10 V Analog Input and ±15 V Analog Output for Raspberry Pi Platforms
CN0407
Ultrahigh Sensitivity Femtoampere Measurement Platform
CN0370
16-Bit, Single-Supply LED Current Driver with Less than ±1 LSB Integral and Differential Nonlinearity
CN0255
16-Bit, 100 kSPS, Single Supply, Low Power Data Acquisition System
