AD4020
20-Bit, 1.8 MSPS/1 MSPS/500 kSPS, Easy Drive, Differential SAR ADCs
Show More
Not the part you were looking for?
3
Ask a Question
Submit your question below and we will return the best answer from ADI’s knowledge database:
Search
Other places you can find help
Support
Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.
Visit the ADI Support Page
Features
- Easy Drive
- Greatly reduced input kickback
- Input current reduced to 0.5 μA/MSPS
- Enhanced acquisition phase, ≥77% of cycle time at 1 MSPS
- First conversion accurate, no latency or pipeline delay
- Input span compression for single-supply operation
- Fast conversion allows low SPI clock rates
- Input overvoltage clamp protection sinks up to 50 mA
- SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
- Greatly reduced input kickback
- High performance
- Differential analog input range: ±VREF, VREF from 2.4 V to 5.1 V
- Throughput: 1.8 MSPS/1 MSPS/500 kSPS options
- INL: ±3.1 ppm maximum
- Guaranteed 20-bit, no missing codes
- SNR: 100.5 dB at fIN = 1 kHz, VREF = 5 V
- THD: −123 dB at fIN = 1 kHz, −100 dB at fIN = 100 kHz
- SINAD: 89 dB at fIN = 900 kHz (see Figure 17 in the data sheet)
- Oversampled dynamic range
- 104 dB for OSR = 2
- 131 dB for OSR = 1024
- Low power
- Single 1.8 V supply operation with 1.71 V to 5.5 V logic interface
- 2.7 mW at 500 kSPS (VDD only)
- 83 μW at 10 kSPS, 15 mW at 1.8 MSPS (total power)
- 10-lead packages: 3 mm × 3 mm LFCSP, 3 mm × 4.90 mm MSOP
- Guaranteed operation: −40°C to +125°C
.svg?rev=fd385c90e2cf4716ae9a8c8d20e6b8e3&la=en&h=24&w=24&hash=A302DF48F94BAAA11877AF223F27157A){kind=icon}
The AD4020 is a high accuracy, high speed, low power, 20-bit, Easy Drive, precision successive approximation register (SAR) analog-to-digital converter (ADC) that operates from a single power supply, VDD. The reference voltage, VREF, is applied externally and can be set independent of the supply voltage. The AD4020 power scales linearly with throughput.
Easy Drive features reduce both signal chain complexity and power consumption while enabling higher channel density. The reduced input current, particularly in high-Z mode, coupled with a long signal acquisition phase, eliminates the need for a dedicated ADC driver. Easy Drive broadens the range of companion circuitry that is capable of driving these ADCs (see Figure 2 in the data sheet).
Input span compression eliminates the need to provide a negative supply to the ADC driver amplifier while preserving access to the full ADC code range. The input overvoltage clamp protects the ADC inputs against overvoltage events, minimizing disturbances on the reference pin, and eliminating the need for external protection diodes.
Fast device throughput up to 1.8 MSPS allows users to accurately capture high frequency signals and to implement oversampling techniques to alleviate the challenges associated with antialias filter designs. Decreased serial peripheral interface (SPI) clock rate requirements reduce digital input/output power consumption, broadens digital host options, and simplifies the task of sending data across digital isolation. The SPI-compatible serial user interface is compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic by using the separate VIO logic supply.
APPLICATIONS
- Automatic test equipment
- Machine automation
- Medical equipment
- Battery-powered equipment
- Precision data acquisition systems
- Instrumentation and control systems
3
Ask a Question
Submit your question below and we will return the best answer from ADI’s knowledge database:
Search
Other places you can find help
Support
Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.
Visit the ADI Support Page
{{modalTitle}}
{{modalDescription}}
{{dropdownTitle}}
- {{defaultSelectedText}} {{#each projectNames}}
- {{name}} {{/each}} {{#if newProjectText}}
-
{{newProjectText}}
{{/if}}
{{newProjectTitle}}
{{projectNameErrorText}}
AD4020
Documentation
Filters
1 Applied
-
All
-
Data Sheet
-
User Guide
-
All
-
English
-
Japanese
Data Sheet
2
User Guide
2
Documentation
Device Drivers 4
3rd Party Solutions 2
Analog Dialogue 3
Webcast 1
Video
4
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 |
|---|---|---|---|
| AD4020BCPZ-RL7 |
10-Lead LFCSP (3mm x 3mm)
|
|
|
| AD4020BRMZ |
10-Lead MSOP
|
|
|
| AD4020BRMZ-RL7 |
10-Lead MSOP
|
|
- AD4020BCPZ-RL7
- Pin/Package Drawing
-
10-Lead LFCSP (3mm x 3mm)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- AD4020BRMZ
- Pin/Package Drawing
-
10-Lead MSOP
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- AD4020BRMZ-RL7
- Pin/Package Drawing
-
10-Lead MSOP
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
Software & Part Ecosystem
Device Drivers
FPGA/HDL
Looking for Evaluation Software? You can find it here
| Parts | Product Life Cycle | Description | ||
|---|---|---|---|---|
|
General Purpose Op Amps1 |
||||
|
PRODUCTION |
Low Power, 3.6 MHz, Low Noise, Rail-to-Rail Output, Operational Amplifiers |
|||
|
High Speed Op Amps (Bandwidth ≥ 50MHz)1 |
||||
|
RECOMMENDED FOR NEW DESIGNS |
3.1 nV/√Hz, 1 mA, 180 MHz, Rail-to-Rail Input/Output Amplifier |
|||
|
High Voltage Op Amps ≥12V2 |
||||
|
RECOMMENDED FOR NEW DESIGNS |
Low Noise, Precision, Rail-to-Rail Output, JFET Single Op Amp |
|||
|
RECOMMENDED FOR NEW DESIGNS |
4 MHz, 7 nV/√Hz, Low Offset and Drift, High Precision Single Amplifier |
|||
|
Internal Power Switch Buck Regulators1 |
||||
|
PRODUCTION |
50 mA/500 mA, High Efficiency, Ultralow Power Step-Down Regulator |
|||
|
Low Noise Op Amps (≤ 10nV/√Hz)1 |
||||
|
RECOMMENDED FOR NEW DESIGNS |
1 nV/√Hz, Low Power, Rail-to-Rail Output Amplifiers |
|||
|
Low Power Op Amps (≤ 1mA/amp) 2 |
||||
|
PRODUCTION |
2.7 V, 800 µA, 80 MHz Rail-to-Rail I/O Single Amplifier |
|||
|
RECOMMENDED FOR NEW DESIGNS |
30 V, Low Noise, Rail-to-Rail Input/Output, Low Power Operational Single Amplifier |
|||
|
Positive Linear Regulators (LDO)2 |
||||
|
RECOMMENDED FOR NEW DESIGNS |
20 V, 200 mA, Low Noise, CMOS LDO Linear Regulator |
|||
|
RECOMMENDED FOR NEW DESIGNS |
5.5V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulator with 31 Fixed-output Voltages |
|||
|
Precision Op Amps (Vos ≤1mV & TCVos ≤2uV/C)1 |
||||
|
RECOMMENDED FOR NEW DESIGNS |
30 V, Micropower, Overvoltage Protection, Rail-to-Rail Input/Output Dual Op Amplifier |
|||
|
Series Voltage References11 |
||||
|
RECOMMENDED FOR NEW DESIGNS |
Ultra-Low-Noise, High-Accuracy 5.0V Voltage Reference |
|||
|
RECOMMENDED FOR NEW DESIGNS |
Ultra-Low-Noise, High-Accuracy 4.096V Voltage Reference |
|||
|
RECOMMENDED FOR NEW DESIGNS |
Ultra-Low-Noise, High-Accuracy 3.3V Voltage Reference |
|||
|
RECOMMENDED FOR NEW DESIGNS |
Ultra-Low-Noise, High-Accuracy 2.5V Voltage Reference |
|||
|
PRODUCTION |
Ultralow Noise, LDO XFET® 4.096V Voltage Reference w/Current Sink and Source |
|||
|
PRODUCTION |
Ultralow Noise, LDO XFET® 5.0V Voltage Reference w/Current Sink and Source |
|||
|
PRODUCTION |
Ultralow Noise, LDO XFET® 2.5V Voltage Reference w/Current Sink and Source |
|||
|
PRODUCTION |
Micro-Power, High-Accuracy 5.0V Voltage Reference |
|||
|
PRODUCTION |
Micro-Power, High-Accuracy 4.096V Voltage Reference |
|||
|
RECOMMENDED FOR NEW DESIGNS |
Micropower, Precision, Auto Qualified 3.3V Voltage Reference |
|||
|
RECOMMENDED FOR NEW DESIGNS |
Micropower, Precision, Auto Qualified 2.5V Voltage Reference |
|||
|
Single-Ended to Differential Amplifiers2 |
||||
|
PRODUCTION |
Ultralow Power, Low Distortion ADC Driver |
|||
|
RECOMMENDED FOR NEW DESIGNS |
Low Power Differential ADC Driver |
|||
|
Standard Digital Isolators2 |
||||
|
RECOMMENDED FOR NEW DESIGNS |
Robust, Quad Channel Isolator W/ Input Disable & 1 Reverse Channel |
|||
|
RECOMMENDED FOR NEW DESIGNS |
Robust, Quad Channel Isolator W/ Output Enable & 1 Reverse Channel |
|||
Can't find the software or driver you need?
Request a Driver/SoftwareEvaluation Kits 1
EVAL-AD400x-FMCZ
Evaluation Board for the AD4000 Series 16-/18-/20-Bit Precision SAR ADCs
Features and Benefits
- Fully featured evaluation board for 10-lead precision ADCs
- Versatile analog signal conditioning circuitry
- On-board reference, reference buffers, and ADC drivers
- PC software for control and data analysis of time and frequency domain
- System demonstration platform-compatible (SDP-H1)
Product Detail
The AD4000/AD4001/AD4002/AD4003/AD4020 family of evaluation boards enable quick, simplified evaluation of the AD4000 family of 16-/18-/20-bit, precision successive approx-imation register (SAR) analog-to-digital converters (ADCs). The AD4000/AD4001/AD4002/AD4003/AD4020 are low power, 16-bit/18-bit/20-bit, precision SAR ADCs that offer high performance with throughputs up to 2 MSPS (1.8 MSPS for the AD4020). The evaluation board demonstrates the performance of the AD4000/AD4001/AD4002/AD4003/AD4020 family of ADCs and provides a simplified interface for a variety of system applications.
The EVAL-AD4000FMCZ/EVAL-AD4001FMCZ/EVAL-AD4002FMCZ/EVAL-AD4003FMCZ/EVAL-AD4020FMCZ evaluation boards, accessible from the EVAL-AD400x-FMCZ product page, are ideal for use with the Analog Devices, Inc., high speed system demonstration platform (SDP-H1). These evaluation boards interface to the SDP-H1 board via a field-programmable gate array (FPGA) mezzanine card (FMC) low pin count (LPC) connector.
On-board components include a high precision buffered band gap 5.0 V reference (ADR4550), a reference buffer (ADA4807-1), a common-mode buffer (ADA4807-1), a signal conditioning circuit with two op amps (ADA4807-1), and a power supply to derive the necessary voltage levels to supply all voltage needs.
The EVAL-AD4000FMCZ, EVAL-AD4001FMCZ, EVAL-AD4002FMCZ, EVAL-AD4003FMCZ, and EVAL-AD4020FMCZ are populated with the AD4000, AD4001, AD4002, AD4003, and AD4020, respectively. However, these boards can be used to evaluate the performance of the AD4004, AD4005, AD4006, AD4007, AD4008, AD4010, AD4011, AD4021, and AD4022 by limiting the sample rate in the evaluation software to the maximum sample rate of the specific ADC. For example, the AD4000 on the EVAL-AD4000FMCZ can be used to evaluate the performance of the AD4004 if the sample rate is limited to 1 MSPS. See the data sheet of each product for the corresponding evaluation board.
Full descriptions of these products are available in their respective data sheets, which must be consulted when using the corresponding evaluation board. Table 7 shows the models of the AD4000/AD4001/AD4002/AD4003/AD4020 evaluation boards.
Resources
Tools & Simulations 4
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
Precision ADC Driver Tool
Signal Chain Designer - BETA
IBIS Model 2
Reference Designs 1
CN0513
20-Bit, 1.8 MSPS, ±2.5 ppm INL, Low Drift, High Accuracy Data Acquisition Solution
Circuits from the lab
Info:Circuits from the lab
Features and Benefits
- Data acquisition solution fully characterized over 0°C to 70°C
- Guaranteed 20-bit no missing codes
- INL: ±2 ppm, DNL: ±0.25 ppm
- Throughput: 1.8 MSPS
- Offset error drift: ±3.5 ppm/°C; gain error drift: ±6 ppm/°C
- SNR: 98 dB at G = 1, 92 dB at G = 10, fIN = 1 kHz
- THD: −120 dB at G = 1, −116 dB at G = 10, fIN = 1 kHz
- Oversampled dynamic range: 102 dB at 900 kSPS, OSR = 2
- Software programmable bipolar input ranges (±1 V to ±10 V)
- Allows single-ended and differential signals
- CMRR: 92 dB typical
- GΩ input impedance allows direct interface with sensors
- Ease of use features reduce system power and complexity
- ADC Input overvoltage clamp protection sinks up to 50 mA
- On-board 5 V reference and buffer
- First conversion accurate, no latency/pipeline delay
- Fast conversion time allows low SPI clock rates
- SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
