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ADS8422

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16 Bit 4MSPS Parallel ADC W/Ref, Pseudo Bipolar, Fully Differential Input

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Data sheet

ADS8422

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 16 Sample rate (max) (ksps) 4000 Number of input channels 1 Interface type Byte-Wide, Parallel Architecture SAR Input type Differential Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 4.1 Input voltage range (min) (V) 4.1 Features Oscillator Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 155 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 93 Digital supply (min) (V) 2.7 Digital supply (max) (V) 5.25
Resolution (Bits) 16 Sample rate (max) (ksps) 4000 Number of input channels 1 Interface type Byte-Wide, Parallel Architecture SAR Input type Differential Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 4.1 Input voltage range (min) (V) 4.1 Features Oscillator Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 155 Analog supply voltage (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 93 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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Top documentation Type Title Format options 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
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

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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
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Simulation model

ADS8422 IBIS Model

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

ADS8422 TINA-TI Reference Design

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

ADS8422 TINA-TI Spice Model

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

ANALOG-ENGINEER-CALC — PC software 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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JITTER-SNR-CALC — Jitter and SNR calculator

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

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Design tool

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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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 (...)
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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 (...)
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