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Texas Instruments ADS122C04 24-Bit Analog-to-Digital Converter (ADC)

Texas Instruments ADS122C04 24-Bit Analog-to-Digital Converter (ADC) offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX). The ADS122C04 also includes a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, and a precision temperature sensor.

The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20SPS, the digital filter offers simultaneous 50Hz and 60Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128. This PGA makes the Texas Instruments ADS122C04 ideal for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors.

Features

  • Current consumption is as low as 315µA (typ.)
  • 2.3V to 5.5V wide supply range
  • 1 to 128 programmable gain 
  • Up to 2kSPS programmable data rates 
  • Up to 20 bits effective resolution
  • Simultaneous 50Hz and 60Hz rejection at 20SPS with single-cycle settling digital filter
  • Two differential or four single-ended inputs
  • Dual-matched programmable current sources
    • 10µA to 1.5mA
  • Internal 2.048V reference
    • 5ppm/°C (typ.) drift
  • Internal 2% accurate oscillator
  • Internal temperature sensor
    • 0.5°C (typ.) accuracy
  • I2C-compatible interface
  • Supported I2C bus speed modes
    • Standard-mode
    • Fast-mode
    • Fast-mode plus
  • 16 pin-configurable I2C addresses
  • 3.0mm × 3.0mm × 0.75mm WQFN package

Applications

  • Field transmitters
  • Temperature, pressure, strain, and flow
  • PLC and DCS analog input modules
  • Temperature controllers
  • Heat meters
  • Patient monitoring systems
  • Body temperature, blood pressure

Functional Block Diagram

Block Diagram - Texas Instruments ADS122C04 24-Bit Analog-to-Digital Converter (ADC)

Related Development Tool

Texas Instruments ADS122C04EVM ADC Evaluation Module (EVM)

Platform for evaluating the ADS122C04 24-bit analog-to-digital converter (ADC). 

Learn Moreacerca de Texas Instruments ADS122C04EVM ADC Evaluation Module (EVM) View Productsrelacionado con Texas Instruments ADS122C04EVM ADC Evaluation Module (EVM)
Publicado: 2018-06-06 | Actualizado: 2023-02-14