ADS7828

ACTIVE

12-Bit, 8-Channel SAR ADC with Internal Reference and I2C Interface

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Product details

Parameters

Resolution (Bits) 12 Number of input channels 8 Sample rate (Max) (kSPS) 50 Interface type I2C Architecture SAR Input type Pseudo-Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext, Int Input range (Max) (V) 5.25 Input range (Min) (V) 0 Features Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 0.675 Analog voltage AVDD (Min) (V) 2.7 SNR (dB) 72 Analog voltage AVDD (Max) (V) 5.25 INL (Max) (+/-LSB) 1 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

TSSOP (PW) 16 22 mm² 4.4 x 5 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • 8-CHANNEL MULTIPLEXER
  • 50kHz SAMPLING RATE
  • NO MISSING CODES
  • 2.7V TO 5V OPERATION
  • INTERNAL 2.5V REFERENCE
  • I2C INTERFACE SUPPORTS:
    Standard, Fast, and High-Speed Modes
  • TSSOP-16 PACKAGE
  • APPLICATIONS
    • VOLTAGE-SUPPLY MONITORING
    • ISOLATED DATA ACQUISITION
    • TRANSDUCER INTERFACES
    • BATTERY-OPERATED SYSTEMS
    • REMOTE DATA ACQUISITION

I2C is a trademark of Koninklijke Philps Electronics N.V. All other trademarks are the property of their respective owners.

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Description

The ADS7828 is a single-supply, low-power, 12-bit data acquisition device that features a serial I2C interface and an 8-channel multiplexer. The Analog-to-Digital (A/D) converter features a sample-and-hold amplifier and internal, asynchronous clock. The combination of an I2C serial, 2-wire interface and micropower consumption makes the ADS7828 ideal for applications requiring the A/D converter to be close to the input source in remote locations and for applications requiring isolation. The ADS7828 is available in a TSSOP-16 package.

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Technical documentation

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Type Title Date
* Datasheet 12-Bit, 8-Channel Sampling Analog-to-Digital Converter with I2C Interface datasheet (Rev. C) Mar. 30, 2005
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
User guide ADS7823-28EVM Jun. 16, 2004

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description

The ADS7823-28EVM is a circuit board for use with two 12-bit single/octal channel, inter-integrated circuit (I2C), serial interface analog-to-digital converters, ADS7823 and ADS7828. Both devices are located on this single printed wiring board, this allows exercising of both devices on a single EVM (...)

Features
  • Full-featured evaluation board for the ADS7823 and ADS7828, single/octal channel analog-to-digital converters
  • Up to eight single-ended or four differential analog inputs
  • Built in reference with buffered output
  • I2C interface
  • Modular EVM form factor for use with a variety of Texas Instruments Processors (...)

Software development

DRIVER OR LIBRARY Download
Linux Driver for ADS7828
ADS7828SW-LINUX The Linux driver supports the ADS7828 and ADS7830 8-Channel Sampling ADCs. The Linux driver supports communication through the I2C bus and interfaces with the Hardware Monitoring sub-system.

 

Linux Mainline Status

Available in Linux Main line: Yes
Available through git.ti.com: N/A

Supported Devices:

  • (...)

Design tools & simulation

SIMULATION MODEL Download
SBAM143.ZIP (34 KB) - IBIS Model
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 (...)
document-generic User guide
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
TSSOP (PW) 16 View options

Ordering & quality

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  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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