Product details

Resolution (Bits) 16 Number of input channels 1 Sample rate (Max) (kSPS) 4000 Interface type Byte-Wide, Parallel Architecture SAR Input type Differential Rating Catalog Reference mode Ext, Int Input range (Max) (V) 4.1 Input range (Min) (V) 4.1 Features Oscillator Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 155 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 93 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 2 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25
Resolution (Bits) 16 Number of input channels 1 Sample rate (Max) (kSPS) 4000 Interface type Byte-Wide, Parallel Architecture SAR Input type Differential Rating Catalog Reference mode Ext, Int Input range (Max) (V) 4.1 Input range (Min) (V) 4.1 Features Oscillator Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 155 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 93 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 2 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25
TQFP (PFB) 48 81 mm² 9 x 9
  • Fully Differential Input with Pseudo-Bipolar Input Range -4 V to +4 V
  • 16-Bit NMC at 4 MSPS
  • 1 LSB INL Typ
  • 92dB SNR, -102dB THD Typ with 100-kHz Input
  • Internal 4.096-V Reference and Reference Buffer
  • REFIN/2 Available for Setting Analog Input Common-Mode Voltage
  • Zero Latency
  • High-Speed Parallel Interface
  • Single Supply Operation Capability
  • Low Power: 155 mW at 4 MHz Typ, Flexible Power-Down Scheme
  • Pin-Out Similar to ADS8412/8402
  • 48-Pin 9×9 TQFP Package
  • APPLICATIONS
    • DWDM
    • Instrumentation
    • High-Speed, High-Resolution, Zero Latency Data Acquisition Systems
    • Transducer Interface
    • Medical Instruments
    • Spectrum Analysis
    • ATE

  • Fully Differential Input with Pseudo-Bipolar Input Range -4 V to +4 V
  • 16-Bit NMC at 4 MSPS
  • 1 LSB INL Typ
  • 92dB SNR, -102dB THD Typ with 100-kHz Input
  • Internal 4.096-V Reference and Reference Buffer
  • REFIN/2 Available for Setting Analog Input Common-Mode Voltage
  • Zero Latency
  • High-Speed Parallel Interface
  • Single Supply Operation Capability
  • Low Power: 155 mW at 4 MHz Typ, Flexible Power-Down Scheme
  • Pin-Out Similar to ADS8412/8402
  • 48-Pin 9×9 TQFP Package
  • APPLICATIONS
    • DWDM
    • Instrumentation
    • High-Speed, High-Resolution, Zero Latency Data Acquisition Systems
    • Transducer Interface
    • Medical Instruments
    • Spectrum Analysis
    • ATE

The ADS8422 is a 16-bit, 4-MHz A/D converter with an internal 4.096-V reference. The device includes a 16-bit capacitor-based multi-bit SAR A/D converter with inherent sample and hold. This converter includes a full 16-bit interface and an 8-bit option where data is read using two 8-bit read cycles if necessary.

The ADS8422 has a fully differential, pseudo-bipolar input. It is available in a 48-lead TQFP package and is characterized over the industrial -40°C to +85°C temperature range.

The ADS8422 is a 16-bit, 4-MHz A/D converter with an internal 4.096-V reference. The device includes a 16-bit capacitor-based multi-bit SAR A/D converter with inherent sample and hold. This converter includes a full 16-bit interface and an 8-bit option where data is read using two 8-bit read cycles if necessary.

The ADS8422 has a fully differential, pseudo-bipolar input. It is available in a 48-lead TQFP package and is characterized over the industrial -40°C to +85°C temperature range.

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Technical documentation

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Type Title Date
* Data sheet 16-Bit 4MSPS Fully Differential Pseudo Bipolar Input Micro Power Sampling ADC datasheet (Rev. B) 06 Dec 2006
White paper Voltage-reference impact on total harmonic distortion 01 Aug 2016
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 May 2015
Technical article Leverage coherent sampling and FFT windows when evaluating SAR ADCs (Part 1) 13 Mar 2015
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 17 Mar 2011
Application note Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 10 Nov 2010
Application note ADS8422 Example Programs 30 Aug 2006
Application note Interfacing the ADS8401/ADS8411 to TMS320C6713 DSP 23 Sep 2004
Application note Interfacing the ADS8402/ADS8412 to TMS320C6713 DSP 23 Sep 2004

Design & development

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

Evaluation board

5-6KINTERFACE — 5-6K Interface Evaluation Module

The interface board consists of two signal conditioning sites, two serial EVM sites, and a parallel EVM site. Regardless of the interface type, all EVMs compatible with the 5-6K Interface Board have a standard analog interface and standard power connector. Three position screw terminals J1 and J2 (...)

User guide: PDF
Not available on TI.com
Evaluation board

TMDSDSK6416 — TMS320C6416 DSP Starter Kit (DSK)

User guide: PDF
Not available on TI.com
Evaluation board

TMDSDSK6713 — TMS320C6713 DSP Starter Kit (DSK)

For TI's newest low power, fixed-and-floating point DSP look at TMDSC674x DSPs and the TMDSLCDK6748 development kit.

The TMS320C6713 DSP Starter Kit (DSK) developed jointly with Spectrum Digital is a low-cost development platform designed to speed the development of high precision (...)

Not available on TI.com
Simulation model

ADS8422 IBIS Model

SLAM116.ZIP (30 KB) - IBIS Model
Simulation model

ADS8422 TINA-TI Reference Design

SLAM314.TSC (2701 KB) - TINA-TI Reference Design
Simulation model

ADS8422 TINA-TI Spice Model

SLAM315.ZIP (26 KB) - TINA-TI Spice Model
Calculation tool

ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

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 (...)
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

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 operational-amplifier (...)
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Calculation tool

JITTER-SNR-CALC — Jitter and SNR Calculator for ADCs

JITTER-SNR-CALC can be used for calculating theoretical Signal to Noise (SNR) performance of ADCs based on input frequency and clock jitter.
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
User guide: PDF
Package Pins Download
TQFP (PFB) 48 View options

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