16-Bit, 2 MSPS/1 MSPS/500 kSPS, Precision, Pseudo Differential, SAR ADCs

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Part Details
Part Models 3
1ku List Price Starting From $11.30
  • Easy Drive expands signal chain flexibility
    • High-Z mode significantly reduces signal chain settling requirements
    • Fast conversion phase extends the ADC acquisition time
    • Input overvoltage protection clamp sinks up to 50 mA
  • High performance
    • First conversion accurate, no latency or pipeline delay
    • Guaranteed 16-bit, no missing codes
    • Throughput: 2 MSPS/1 MSPS/500 kSPS options
    • INL: ±1.0 LSB maximum
    • SNR: 93 dB at fIN = 1 kHz, VREF = 5 V
    • THD: −115 dB at fIN = 1 kHz; −95 dB at fIN = 100 kHz
    • Pseudo differential input range
    • Flexible external reference voltage range (2.4 V to 5.1 V)
  • Low power
    • Single 1.8 V supply operation with 1.71 V to 5.5 V logic interface
    • 2.5 mW at 500 kSPS (VDD only)
    • 70 μW at 10 kSPS, 14 mW typical at 2 MSPS (total power)
  • SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
  • 10-lead packages: 3 mm × 3 mm LFCSP, 3 mm × 4.90 mm MSOP
  • Guaranteed operation: −40°C to +125°C
Additional Details
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The AD4000/AD4004/AD4008 are high accuracy, high speed, low power, 16-bit, precision successive approximation register (SAR) analog-to-digital converters (ADCs). These ADCs incorporate Easy Drive features, such as high-Z mode and an extended acquisition phase, which provide signal chain architectural flexibility by expanding the range of companion circuitry that can be paired with these ADCs.

Operating from a single power supply, VDD, these ADCs allow the reference voltage, VREF, to be applied externally and set independently of the supply voltage. With fast device throughput up to 2 MSPS, the AD4000/AD4004/AD4008 can accurately capture high-frequency signals and implement oversampling techniques to alleviate the challenges associated with antialias filter designs. Additionally, the power consumption of these ADCs scales linearly with throughput.

The AD4000/AD4004/AD4008 eliminate the need for a negative supply to the ADC driver amplifier by employing input span compression, while preserving access to the full ADC code range. Furthermore, 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.

By reducing the serial peripheral interface (SPI) clock rate requirements, the AD4000/AD4004/AD4008 reduce digital input and output power consumption, broaden digital host options, and simplify the task of sending data across digital isolation. The SPI-compatible serial user interface supports 1.8 V, 2.5 V, 3.3 V, and 5 V logic by using the separate VIO logic supply.


  • Automated test equipment
  • Machine automation
  • Medical equipment
  • Battery-powered equipment
  • Precision data acquisition systems
  • Instrumentation and control systems
Part Models 3
1ku List Price Starting From $11.30

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Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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Evaluation Board for the AD4000 Series 16-/18-/20-Bit Precision SAR ADCs



Evaluation Board for the AD4000 Series 16-/18-/20-Bit Precision SAR ADCs

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.

Tools & Simulations

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.

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