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Texas Instruments ADS8686S 16-Bit Analog-to-Digital Converter (ADC)

Texas Instruments ADS8686S 16-Bit Analog-to-Digital Converter (ADC) is a 16-channel data acquisition (DAQ) system based on a dual simultaneous-sampling, 16-bit successive approximation register (SAR) ADC. The ADS8686S features a complete analog front-end for each channel with an input clamp, 1MΩ input impedance, an independently programmable gain amplifier (PGA), a programmable low-pass filter, and an ADC input driver. The device also features a low-drift, precision reference with a buffer to drive the ADCs. A flexible digital interface supporting serial, parallel, and byte communication enables the device to be used with various host controllers.

The Texas Instruments ADS8686S can be configured to accept ±10V, ±5V, or ±2.5V bipolar inputs with a 20% over-range option using a single 5V supply. The high input impedance directly connects sensors and transformers, thus eliminating the need for external driver circuits. The ADS8686S has a highly configurable channel sequencer to reduce the sequencing overhead on the backend controller or processor. The high performance and accuracy, along with zero-latency conversions offered by this device, make the ADS8686S an excellent choice for multiple industrial applications.

Features

  • 16-channel, 16-bit ADC with integrated analog front-end
  • Dual simultaneous sampling: 8x2 channels
  • Supply
    • 5V analog
    • 1.8V to 5V digital
  • Constant 1MΩ input impedance front-end
  • Independently programmable input ranges with 20% over-range
  • Programmable low-pass filter
    • 15kHz, 39kHz, 376kHz
  • Excellent DC and AC performance
  • On-chip reference and reference buffer
  • Excellent over-temperature performance
  • Overvoltage input clamp with 8kV ESD
  • Optional cyclic redundancy check (CRC) error checking
  • On-chip self-diagnostic function
  • -40°C to +125°C temperature range

Applications

  • Multifunction relays
  • Servo drive position sensors
  • Analog input modules
  • Data acquisition (DAQ)

Functional Block Diagram

Block Diagram - Texas Instruments ADS8686S 16-Bit Analog-to-Digital Converter (ADC)

Related Development Tool

Texas Instruments ADS8686SEVM-PDK Performance Demonstration Kit

Evaluates the operation of the ADS8686S dual simultaneous-sampling ADC, with an integrated AFE.

Learn Moreabout Texas Instruments ADS8686SEVM-PDK Performance Demonstration Kit View Productsrelated to Texas Instruments ADS8686SEVM-PDK Performance Demonstration Kit
Published: 2020-09-16 | Updated: 2024-08-20