Texas Instruments ADS9224R | Demoboard ADS9224REVM-PDK

Description

The ADS92x4R is a pin-compatible, high-speed, dual, simultaneous-sampling, analog-to-digital converters (ADC) with an integrated reference and reference buffer. The device can operate on a single 5-V supply and supports unipolar, fully differential analog input signals with excellent DC and AC specifications. The device has excellent AC performance with analog input frequencies up to 1.5 MHz, which makes the device suitable for wide-bandwidth data acquisition (DAQ) systems.The device supports 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). This device also supports a data averaging feature that provides an AC performance boost in noisy environments.The device comes in a space-saving, 5-mm × 5-mm, VQFN package. The ADS92x4R is specified for the extended temperature range of –40°C to +125°C.

Features

• High resolution, high throughput:
• ADS9224R: 16 bits, 3 MSPS, low latency: 333 ns
• ADS9234R: 14 bits, 3.5 MSPS, low latency: 285 ns
• Two unipolar, fully differential simultaneously sampled channels
• Excellent DC and AC performance:
• ADS9224R:
• 16-bit NMC DNL, ±2-LSB max INL
• 94-dB SNR, –109-dB THD
• 88-dB SINAD at 1 MHz
• ADS9234R:
• 14-bit NMC DNL, ±1-LSB max INL
• 85.6-dB SNR, –106-dB THD
• 84-dB SINAD at 1 MHz
• 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
• Extended temperature range: –40°C to +125°C

Typical applications

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

More information

• Datasheet
• IC product information