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Analog-to-digital converters (ADCs)
Precision ADCs (<=10MSPS)

ADS8321

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16-Bit, High-Speed, Micropower Sampling Analog-to-Digital Converter (ADC)

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Data sheet

ADS8321

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 16 Number of input channels 1 Sample rate (Max) (kSPS) 100 Interface type SPI Architecture SAR Input type Differential, Pseudo-Differential, Single-Ended Multi-channel configuration — Rating Catalog Reference mode Ext Input range (Max) (V) 2.6 Input range (Min) (V) 0 Features — Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 5.5 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 87 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 7.9 Digital supply (Min) (V) 4.75 Digital supply (Max) (V) 5.25
Resolution (Bits) 16 Number of input channels 1 Sample rate (Max) (kSPS) 100 Interface type SPI Architecture SAR Input type Differential, Pseudo-Differential, Single-Ended Multi-channel configuration — Rating Catalog Reference mode Ext Input range (Max) (V) 2.6 Input range (Min) (V) 0 Features — Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 5.5 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 87 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 7.9 Digital supply (Min) (V) 4.75 Digital supply (Max) (V) 5.25
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VSSOP (DGK) 8 15 mm² 3 x 4.9
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  • BIPOLAR INPUT RANGE
  • 100kHz SAMPLING RATE
  • MICRO POWER:
  • 4.5mW at 100kHz
  • 1mW at 10kHz
  • POWER DOWN: 3&mirco;A max
  • MSOP-8 PACKAGE
  • PIN-COMPATIBLE TO ADS7816 AND ADS7822
  • SERIAL (SPI/SSI) INTERFACE
  • APPLICATIONS
    • BATTERY OPERATED SYSTEMS
    • REMOTE DATA ACQUISITION
    • ISOLATED DATA ACQUISITION
    • SIMULTANEOUS SAMPLING, MULTI-CHANNEL SYSTEMS
    • INDUSTRIAL CONTROLS
    • ROBOTICS
    • VIBRATION ANALYSIS

All thradmarks are the property of their respective owners.
  • BIPOLAR INPUT RANGE
  • 100kHz SAMPLING RATE
  • MICRO POWER:
  • 4.5mW at 100kHz
  • 1mW at 10kHz
  • POWER DOWN: 3&mirco;A max
  • MSOP-8 PACKAGE
  • PIN-COMPATIBLE TO ADS7816 AND ADS7822
  • SERIAL (SPI/SSI) INTERFACE
  • APPLICATIONS
    • BATTERY OPERATED SYSTEMS
    • REMOTE DATA ACQUISITION
    • ISOLATED DATA ACQUISITION
    • SIMULTANEOUS SAMPLING, MULTI-CHANNEL SYSTEMS
    • INDUSTRIAL CONTROLS
    • ROBOTICS
    • VIBRATION ANALYSIS

All thradmarks are the property of their respective owners.

open-in-new Find other Precision ADCs (<=10MSPS)

The ADS8321 is a 16-bit sampling analog-to-digital converter (ADC) with tested specifications over a 4.75V to 5.25V supply range. It requires very little power even when operating at the full 100kHz data rate. At lower data rates, the high speed of the device enables it to spend most of its time in the power-down mode—the average power dissipation is less than 1mW at 10kHz data rate.

The ADS8321 also features a synchronous serial (SPI/SSI compatible) interface, and a differential input. The reference voltage can be set to any level within the range of 500mV to VCC/2.

Ultra-low power and small size make the ADS8321 ideal for portable and battery-operated systems. It is also a perfect fit for remote data acquisition modules, simultaneous multi-channel systems, and isolated data acquisition. The ADS8321 is available in an MSOP-8 package.

The ADS8321 is a 16-bit sampling analog-to-digital converter (ADC) with tested specifications over a 4.75V to 5.25V supply range. It requires very little power even when operating at the full 100kHz data rate. At lower data rates, the high speed of the device enables it to spend most of its time in the power-down mode—the average power dissipation is less than 1mW at 10kHz data rate.

The ADS8321 also features a synchronous serial (SPI/SSI compatible) interface, and a differential input. The reference voltage can be set to any level within the range of 500mV to VCC/2.

Ultra-low power and small size make the ADS8321 ideal for portable and battery-operated systems. It is also a perfect fit for remote data acquisition modules, simultaneous multi-channel systems, and isolated data acquisition. The ADS8321 is available in an MSOP-8 package.

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Technical documentation

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Type Title Date
* Data sheet ADS8321: 16-Bit, High Speed, MicroPower Sampling Analog-to-Digital Converter datasheet (Rev. B) 16 Sep 2004
Technical article How smart AFEs offer an integrated analog solution for thermoelectric cooling control 04 Jan 2022
Analog design journal Q3 2009 Issue Analog Applications Journal 24 Sep 2018
Analog design journal Q4 2009 Issue Analog Applications Journal 24 Sep 2018
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
Analog design journal Using fully differential op amps as attenuators, Part 3 04 Oct 2009
Analog design journal Using fully differential op amps as attenuators, Part 2 14 Jul 2009
Analog design journal Q2 2009 Issue Analog Applications Journal 01 May 2009
Analog design journal Using fully differential op amps as attenuators, Part 1 01 May 2009
Analog design journal Getting the most out of your instrumentation amplifier design 10 Oct 2005

Design & development

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

Evaluation board

ADCPRO — Analog-to-digital converter pro (ADCPro™) evaluation software

ADCPro™ is a modular software system for evaluating analog-to-digital converters (ADCs) without the need for expensive logic analyzers and complex analysis routines. Used alone it is suitable for performing analysis on data sets captured from ADC testing; when paired with a Texas Instruments (...)

document-pdfAcrobat User guide
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Evaluation board

ADS8321EVM-PDK — ADS8321 Performance Development Kit

The ADS8321EVM-PDK is a complete evaluation/demonstration kit, which combines ADS8321EVM with the DSP-based MMB0 board as a motherboard. The mother board and the ADCPro™ evaluation software are supplied for use with a personal computer running Microsoft&#153 Windows operating system. This (...)

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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 (...)
document-pdfAcrobat User guide
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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 (...)
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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 op-amp gain with feedback (...)
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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.
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Package Pins Download
VSSOP (DGK) 8 View options

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