16-bit, 3-MSPS, dual-channel, simultaneous-sampling SAR ADC with internal reference and enhanced SPI


Product details


Resolution (Bits) 16 Number of input channels 2 Sample rate (Max) (kSPS) 3000 Interface type SPI, Enhanced SPI Architecture SAR Input type Differential Multi-channel configuration Simultaneous Sampling Rating Catalog Reference mode Int Input range (Max) (V) 5.5 Input range (Min) (V) 0 Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 120 Analog voltage AVDD (Min) (V) 4.5 SNR (dB) 93.5 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 2 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 5.5 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

VQFN (RHB) 32 25 mm² 5 x 5 open-in-new Find other Precision ADCs (<=10MSPS)


  • High resolution, high throughput:
    • ADS9224R: 16 bits, 3 MSPS, low latency: 333 ns
    • ADS9234R: 14 bits, 3.5 MSPS, low latency: 285 ns
  • Two unipolar, fully differential simultaneously sampled channels
  • Excellent DC and AC performance:
    • ADS9224R:
      • 16-bit NMC DNL, ±2-LSB max INL
      • 94-dB SNR, –109-dB THD
      • 88-dB SINAD at 1 MHz
    • ADS9234R:
      • 14-bit NMC DNL, ±1-LSB max INL
      • 85.6-dB SNR, –106-dB THD
      • 84-dB SINAD at 1 MHz
  • Feature integration:
    • Internal reference and reference buffers
    • Internal REFby2 buffer for setting common-mode
    • Data averaging
  • Enhanced-SPI interface for MCUs and FPGAs:
    • Wide read cycle to read data with MCUs
    • Clock re-timer for data transfers with digital isolators
    • DDR modes for FPGAs
    • Parallel byte mode for easy interface
  • Extended temperature range: –40°C to +125°C

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The ADS92x4R is a pin-compatible, high-speed, dual, simultaneous-sampling, analog-to-digital converters (ADC) with an integrated reference and reference buffer. The device can operate on a single 5-V supply and supports unipolar, fully differential analog input signals with excellent DC and AC specifications. The device has excellent AC performance with analog input frequencies up to 1.5 MHz, which makes the device suitable for wide-bandwidth data acquisition (DAQ) systems.

The device supports SPI-compatible serial (enhanced-SPI) and byte-wide parallel interfaces, making the device easy to pair with a diversity of microcontrollers, digital signal processors (DSPs), and field-programmable gate arrays (FPGAs). This device also supports a data averaging feature that provides an AC performance boost in noisy environments.

The device comes in a space-saving, 5-mm × 5-mm, VQFN package. The ADS92x4R is specified for the extended temperature range of –40°C to +125°C.

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Technical documentation

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Type Title Date
* Datasheet ADS92x4R Dual, Low-Latency, Simultaneous-Sampling SAR ADC datasheet (Rev. C) Jun. 17, 2019
Application note Continuous Wave (CW) Signal Conditioning in Ultrasound Systems Using ADS92x4R Oct. 10, 2019
Application note Setting a Constant Common-Mode Voltage for Fully-Differential SAR ADC Inputs Sep. 06, 2019
User guide ADS9224REVM-PDK User's Guide (Rev. A) Jun. 14, 2019
Application note Circuit for protecting low-voltage SAR ADC from electrical overstress with minim May 25, 2019
Application note True differential, 4 × 2 MUX, analog front end, simultaneous-sampling ADC circui (Rev. A) Nov. 15, 2018
Application note Improving Response Time and Accuracy in Autonomous Robots With Wideband SAR-ADCs Oct. 03, 2018

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The ADS9224R evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS9224R successive-approximation register (SAR) analog-to-digital converter (ADC), which is a fully-differential input, 16-bit, 3-MSPS device. ADS9224REVM-PDK (...)

  • Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of ADS9224R ADC
  • USB powered; no external power supply required
  • PHI controller provides a convenient communication interface to ADS9224R ADC over USB 2.0 (or higher) for power (...)

Software development

SBAC219A.ZIP (196 KB)

Design tools & simulation

SBAM389.ZIP (7 KB) - TINA-TI Spice Model
SBAM390.TSC (502 KB) - TINA-TI Reference Design
SBAM391.ZIP (47 KB) - IBIS Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide
Analog-to-digital converter (ADC) input driver design tool supporting multiple input types
ADC-INPUT-CALC ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and transformer-coupled (...)
Analog engineer's calculator
ANALOG-ENGINEER-CALC — The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)

CAD/CAE symbols

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VQFN (RHB) 32 View options

Ordering & quality

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