Powrót do: Texas Instruments

Texas Instruments ADS92x4R Dual-Channel SAR ADCs

Texas Instruments ADS92x4R dual-channel SAR ADCs offer pin-compatible, high-speed, simultaneous sampling with an integrated reference and reference buffer. The ADS92x4R ADCs operate from a single 5V supply and support unipolar operation. The device offers fully differential analog input signals with excellent DC and AC specifications. With high AC performance, the ADS92x4R ADCs provide analog input frequencies up to 1.5MHz, which makes the device suitable for wide-bandwidth data acquisition (DAQ) systems.

The ADCs support SPI-compatible serial (enhanced-SPI) and byte-wide parallel interfaces, making the device easy to pair with a diversity of microcontrollers, digital signal processors (DSPs), and field-programmable gate arrays (FPGAs). A data averaging feature boosts AC performance in noisy environments on the ADS92x4R ADCs.

The Texas Instruments ADS92x4R is available in a space-saving, 5mm × 5mm VQFN package and is specified for the extended temperature range of –40°C to +125°C.

Features

  • High resolution, high throughput
    • ADS9224R: 16 bits, 3MSPS, low latency: 333ns
    • ADS9234R: 14 bits, 3.5MSPS, low latency: 285ns
  • Two unipolar, fully differential simultaneously sampled channels
  • Excellent DC and AC performance
    • ADS9224R
      • 16-bit NMC DNL, ±2-LSB max INL
      • 94dB SNR, –109dB THD
      • 88dB SINAD at 1MHz
    • ADS9234R
      • 14-bit NMC DNL, ±1LSB max INL
      • 85.6dB SNR, –106dB THD
      • 84dB SINAD at 1MHz
  • Feature integration
    • Internal reference and reference buffers
    • Internal REFby2 buffer for setting common-mode
    • Data averaging
  • Enhanced-SPI interface for MCUs and FPGAs
    • Wide read cycle to read data with MCUs
    • Clock re-timer for data transfers with digital isolators
    • DDR modes for FPGAs
    • Parallel byte mode for easy interface
  • –40°C to +125°C extended temperature range 

Applications

  • Optical encoders: incremental and absolute
  • SONAR receivers
  • Optical networking: EDFA gain-control loop
  • Power-quality measurement
  • Digital power supply
  • I/Q demodulators
  • Medical imaging: CT scanners, MRI scanners
  • Impedance analyzers

Typical Application Diagram

Application Circuit Diagram - Texas Instruments ADS92x4R Dual-Channel SAR ADCs

Related Development Tool

Texas Instruments ADS9224REVM-PDK Evaluation Module

Facilitates an extensive evaluation of the features and performance of the ADS9224R.

Learn Moreo Texas Instruments ADS9224REVM-PDK Evaluation Module View Productspowiązany z Texas Instruments ADS9224REVM-PDK Evaluation Module
Opublikowano: 2019-09-30 | Zaktualizowano: 2023-11-15