ADS7822

ACTIVE

12-Bit, 200kSPS Micro Power Sampling Analog-To-Digital Converter

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Product details

Parameters

Resolution (Bits) 12 Number of input channels 1 Sample rate (Max) (kSPS) 200 Interface type SPI Architecture SAR Input type Pseudo-Differential, Single-Ended Multi-channel configuration Rating Catalog Reference mode Ext Input range (Max) (V) 5.25 Input range (Min) (V) 0 Features Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 1.6 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 71 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 0.75 Digital supply (Min) (V) 4.75 Digital supply (Max) (V) 5.25 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • 200kHz Sampling Rate
  • microPower:
      1.6mW at 200kHz
      0.54mW at 75kHz
      0.06mW at 7.5kHz
  • Power Down: 3µA max
  • Mini-DIP-8, SO-8, and MSOP-8 Packages
  • Pseudo-Differential Input
  • Serial Interface
  • APPLICATIONS
    • Battery-Operated Systems
    • Remote Data Acquisition
    • Isolated Data Acquisition
    • Simultaneous Sampling, Multichannel Systems

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

Description

The ADS7822 is a 12-bit sampling analog-to-digital (A/D) converter with ensured specifications over a 2.7V to 5.25V supply range. It requires very little power even when operating at the full 200kHz rate. At lower conversion rates, the high speed of the device enables it to spend most of its time in the power-down mode—the power dissipation is less than 60µW at 7.5kHz.

The ADS7822 also features operation from 2.0V to 5V, a synchronous serial interface, and a pseudo-differential input. The reference voltage can be set to any level within the range of 50mV to VCC.

Ultra low power and small size make the ADS7822 ideal for battery-operated systems. It is also a perfect fit for remote data-acquisition modules, simultaneous multichannel systems, and isolated data acquisition. The ADS7822 is available in a plastic mini-DIP-8, an SO-8, or an MSOP-8 package.

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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet 12-Bit, 200kHz, microPower Sampling Analog-To-Digital Converter datasheet (Rev. C) Jul. 27, 2007
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs May 21, 2015
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 Mar. 17, 2011
Application note Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) Nov. 10, 2010
Application note Interfacing the ADS7822 to synchronous serial port of the 80x51 Microcontroller Sep. 27, 2000

Design & development

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

Software development

IDE, CONFIGURATION, COMPILER OR DEBUGGER 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 TOOL Download
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 (...)
Features
  • 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
  • (...)
SIMULATION TOOL 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 (...)
CALCULATION TOOL Download
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 (...)
CALCULATION TOOL 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
  • (...)

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
VSSOP (DGK) 8 View options

Ordering & quality

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  • Ongoing reliability monitoring

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