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Texas Instruments ADS117L11 16-Bit Delta-Sigma (ΔΣ) ADC

Texas Instruments ADS117L11 16-Bit Delta-Sigma (ΔΣ) Analog-to-Digital Converter (ADC) has data rates up to 400kSPS using the wideband filter and up to 1067kSPS using the low-latency filter. The device offers an excellent combination of AC performance and DC precision with low power consumption (18.6mW in high-speed mode).

The device integrates input and reference buffers to reduce signal loading. The low-drift modulator achieves excellent DC precision with low in-band noise for outstanding AC performance. The power-scalable architecture provides two-speed modes to optimize data rate, resolution, and power consumption. The digital filter is configurable for wideband or low-latency operation, optimizing AC performance or data throughput for DC signals, all in one device.

The serial interface features a daisy-chain capability to reduce the SPI I/O over an isolation barrier. Input and output data and register settings are validated by a cyclic-redundancy check (CRC) feature to enhance operational reliability. The small 3mm × 3mm WQFN package is designed for limited-space applications. The Texas Instruments ADS117L11 is fully specified for operation over the –40°C to +125°C temperature range.

Features

  • Programmable data rate
    • Up to 400kSPS (wideband filter)
    • Up to 1.067MSPS (low-latency filter)
  • Selectable digital filter
    • Wideband or low-latency
  • AC accuracy with DC precision
    • 97.5dB (200kSPS), typical dynamic range
    • –110dB, typical THD
    • 0.5LSB, typical INL
    • 50nV/°C, typical offset drift
    • 0.6ppm/°C, typical gain drift
  • Power-scalable architecture
    • 400kSPS, 18.6mW high-speed mode
    • 50kSPS, 3.3mW low-speed mode
  • Input and reference precharge buffers
  • Internal or external clock
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design

Applications

  • Test and measurement
    • Data acquisition (DAQ)
    • Shock and vibration instruments
    • Acoustics and dynamic strain gauges
  • Factory automation and control
    • Analog input modules
  • Medical
    • Pulse oximetry
  • Grid infrastructure
    • Power quality analyzer

Functional Block Diagram

Block Diagram - Texas Instruments ADS117L11 16-Bit Delta-Sigma (ΔΣ) ADC

Related Development Tool

Texas Instruments ADS127L11EVM-PDK ADC Evaluation Module (EVM)

Platform for evaluating the ADS127L11, a 24-bit, high-speed, wide-bandwidth, delta-sigma (ΔΣ) ADC.

Learn Moreabout Texas Instruments ADS127L11EVM-PDK ADC Evaluation Module (EVM) View Productsrelated to Texas Instruments ADS127L11EVM-PDK ADC Evaluation Module (EVM)
Published: 2022-11-07 | Updated: 2022-11-21