ADS8321

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

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Product details

Parameters

Resolution (Bits) 16 Number of input channels 1 Sample rate (Max) (kSPS) 100 Interface Serial, 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) -2.6 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 Approx. price (US$) 4.53 | 1ku open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • 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

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

Description

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.

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

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Type Title Date
* Datasheet ADS8321: 16-Bit, High Speed, MicroPower Sampling Analog-to-Digital Converter datasheet (Rev. B) Sep. 16, 2004
Application notes Q3 2009 Issue Analog Applications Journal Sep. 24, 2018
Application notes Q4 2009 Issue Analog Applications Journal Sep. 24, 2018
White papers Voltage-reference impact on total harmonic distortion Aug. 01, 2016
More literature Best of Baker's Best: Precision Data Converters -- SAR ADCs May 21, 2015
Application notes Determining Minimum Acquisition Times for SAR ADCs, part 2 Mar. 17, 2011
Application notes Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) Nov. 10, 2010
Application notes Using fully differential op amps as attenuators, Part 3 Oct. 04, 2009
Application notes Using fully differential op amps as attenuators, Part 2 Jul. 14, 2009
Application notes Q2 2009 Issue Analog Applications Journal May 01, 2009
Application notes Using fully differential op amps as attenuators, Part 1 May 01, 2009
More literature ADS832x Videocast [WMV] Jul. 10, 2008
Application notes Getting the most out of your instrumentation amplifier design Oct. 10, 2005

Design & development

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

Hardware development

EVALUATION BOARDS Download
Description

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 (...)

EVALUATION BOARDS Download
document-generic User guide
Description

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 (...)

Features

ADCPro software from Texas Instruments will simplify the tasks of collecting and analyzing ADC data, and ease evaluation. With it, you can easily set up an evaluation system that may not exactly replicate the manufacturer's system, but still arrive at meaningful results that can be compared to (...)

EVALUATION BOARDS Download
Description

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 (...)

Features
  • Easy-to-use evaluation software for Microsoft™ Windows
  • Data collection to text files
  • Built-in analysis tools including scope, FFT, and histogram displays
  • Complete control of board settings
  • Easily expandable with new analysis plug-in tools from Texas Instruments

Software development

IDES, CONFIGURATION, COMPILERS & DEBUGGERS Download
DCPFREETOOL Software Plug-In to Code Composer Studio
DCPFREETOOL The data converter support plug-in is a free tool, which allows the user of Code Composer Studio™ to create initialization data and configuration software for Texas Instruments data converters based on inputs on a graphical user interface.

IMPORTANT: Please read the following before downloading the (...)

Features

The data converter support plug-in (DCP) is a component of TI's Code Composer Studio™ and offers easy-to-use windows for the "point-and-click" configuration of TI's data converters from within the integrated development environment (IDE), preventing illegal combinations of settings. The DCP (...)

Design tools & simulation

SIMULATION TOOLS Download
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
CALCULATION TOOLS Download
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 (...)
Features
  • 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
  • (...)
CALCULATION TOOLS Download
Jitter and SNR Calculator for ADCs
JITTER-SNR-CALC JITTER-SNR-CALC can be used for calculating theoretical Signal to Noise (SNR) performance of ADCs based on input frequency and clock jitter.

CAD/CAE symbols

Package Pins Download
VSSOP (DGK) 8 View options

Ordering & quality

Support & training

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