The ADS8920B, ADS8922B, and ADS8924B (ADS892xB) belong to a family of
pin-to-pin compatible, high-speed, single-channel, high-precision, 16-bit successive approximation
register (SAR) based analog-to-digital convertors (ADCs) with an integrated reference buffer and
integrated low-dropout regulator (LDO). The device family includes the ADS890xB (20-bit) and
ADS891xB (18-bit) resolution variants.
The ADS89xxB boost analog performance while maintaining high-resolution data transfer by
using TI’s Enhanced-SPI feature. Enhanced-SPI enables the ADS89xxB to achieve high throughput at
lower clock speeds, thereby simplifying the board layout and lowering system cost. Enhanced-SPI
also simplifies clocking-in of data, thereby making this device ideal for applications involving
FPGAs, DSPs. The ADS89xxB is compatible with a standard SPI Interface.
The ADS89xxB has an internal data parity feature that can be appended to the ADC data
output. ADC data validation by the host, using parity bits, improves system reliability.
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