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Texas Instruments ADS1x4S1x Analog-to-Digital Converters (ADCs)

Texas Instruments ADS1x4S1x Analog-to-Digital Converters are precision delta-sigma ADCs for temperature, pressure, flow, and other industrial sensor measurements. The family incorporates 16- or 24-bit conversion, a low-noise programmable-gain amplifier, a flexible input multiplexer, an internal reference, an oscillator, and programmable excitation-current sources.

The TI ADS1x4S1x ADCs offer 6- and 12-input configurations for systems with different channel-count requirements. The devices integrate sensor biasing, diagnostics, calibration, and fault detection functions to reduce external circuitry and simplify precision data acquisition designs.

Features

  • Low-noise delta-sigma conversion for precision sensor measurement
  • Integrated low-noise programmable-gain amplifier
  • Flexible analog input multiplexer
  • Single-cycle settling for multiplexed measurements
  • Simultaneous 50Hz and 60Hz line-frequency rejection
  • Integrated low-drift voltage reference
  • Dual programmable excitation-current sources for resistive sensors
  • Sensor-bias voltage output for biased measurements
  • Internal oscillator with external-clock support
  • Global-chop function for reducing offset and offset drift
  • System-monitoring and self-diagnostic functions
  • Sensor burn-out detection
  • Low-side power switch for bridge-sensor excitation
  • Cyclic redundancy check for interface-data integrity

Applications

  • Temperature transmitters
  • Pressure transmitters
  • Flow transmitters
  • PLC analog input modules
  • Factory automation and process control

Specifications

  • Device configurations
    • ADS114S08
      • 16-bit resolution
      • 12 single-ended or 6 differential analog inputs
    • ADS114S18
      • 16-bit resolution
      • 6 single-ended or 3 differential analog inputs
    • ADS124S08
      • 24-bit resolution
      • 12 single-ended or 6 differential analog inputs
    • ADS124S18
      • 24-bit resolution
      • 6 single-ended or 3 differential analog inputs
  • Programmable data-rate range of 2.5SPS to 4000SPS
  • Programmable-gain options
    • 1V/V
    • 2V/V
    • 4V/V
    • 8V/V
    • 16V/V
    • 32V/V
    • 64V/V
    • 128V/V
  • Internal reference voltage of 2.5V
  • Programmable excitation-current options from 10µA to 2000µA
  • Analog supply-voltage range
    • 2.7V to 5.25V for single-supply operation
    • ±2.5V for bipolar-supply operation
  • Digital supply-voltage range of 2.7V to 3.6V
  • SPI-compatible serial interface
  • Operating temperature range of -50°C to +125°C
  • Package options
    • ADS114S08 and ADS124S08
      • 32-pin VQFN package
      • 32-pin TQFP package
    • ADS114S18 and ADS124S18
      • 28-pin TSSOP package

Block Diagram

Block Diagram - Texas Instruments ADS1x4S1x Analog-to-Digital Converters (ADCs)
Published: 2026-10-20 | Updated: 2026-10-26