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Texas Instruments ADS1119 Delta-Sigma Analog-to-Digital Converter

Texas Instruments ADS1119 Delta-Sigma Analog-to-Digital Converter (ADC) is a precision, 16-bit, analog-to-digital converter. This ADC includes all features necessary to implement the most common system monitoring functions, such as supply voltage, current, and temperature monitoring. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), rail-to-rail input buffers, a programmable gain stage, a voltage reference, and an oscillator.

The device includes buffers that allow high-impedance sources to be directly connected to the device. A gain stage follows the buffers which provide selectable gains of 1 and 4. The ADS1119 can perform conversions at data rates as high as 1000 samples per second (SPS) with single-cycle settling. At 20SPS, the digital filter offers simultaneous 50Hz and 60Hz rejection for noisy industrial applications.

The ADS1119 features a 2-wire, I2C-compatible interface that supports I2C bus speeds up to 1Mbps. 16 different I2C addresses can be selected for the device via two address pins.

Features

  • Easy to use with only one register to program
  • Current consumption is as low as 315µA (typ)
  • Wide supply range of 2.3V to 5.5V
  • Rail-to-rail input buffers to achieve high input impedance
  • Programmable gains of 1 and 4
  • Programmable data rates up to 1kSPS
  • 16-Bit, Noise-free resolution at 20SPS
  • Simultaneous 50Hz and 60Hz rejection at 20SPS with single-cycle settling digital filter
  • Two differential or four single-ended inputs
  • Internal 2.048V Reference of 5ppm/°C (typ) Drift
  • Internal 2% accurate oscillator
  • I2C-Compatible Interface
  • Supported I2C bus speed modes
    • Standard-mode
    • Fast-mode
    • Fast-mode plus
  • 16 Pin-Configurable I2C addresses
  • Package 3.0mm × 3.0mm × 0.75mm WQFN

Applications

  • Battery test equipment
  • Gas detectors
  • Heat meters
  • Optical modules
  • Wearable fitness and activity trackers

Associated Development Tool

Texas Instruments BOOSTXL-ADS1119 BoosterPack™ Plug-in Module

Evaluation platform designed to highlight the ADS1119 features and its various modes of operation.

Learn Moreabout Texas Instruments BOOSTXL-ADS1119 BoosterPack™ Plug-in Module View Productsrelated to Texas Instruments BOOSTXL-ADS1119 BoosterPack™ Plug-in Module

Functional Block Diagram

Block Diagram - Texas Instruments ADS1119 Delta-Sigma Analog-to-Digital Converter

Videos

Published: 2018-09-05 | Updated: 2024-10-30