Texas Instruments ADS8920B, ADS8922B and ADS8924B (ADS892xB) belong to a family of pin-to-pin compatible, high-speed, high-accuracy successive approximation register (SAR) based ADCs with integrated reference buffer and integrated low dropout regulator (LDO) . These devices support unipolar, fully differential analog input signals with ±0.5 LSB INL and 96 dB SNR specifications over the specified temperature range.
The integrated LDO enables single-supply operation with low power consumption. The integrated reference buffer supports burst mode data acquisition with 16-bit precision of the first sample. External reference voltages from 2.5 V to 5 V are supported, providing a wide selection of input ranges with no additional input scaling.
The integrated multi-SPI digital interface is backward compatible with legacy SPI protocols. Additionally, the configurable features simplify board layout, timing, and firmware, and support high throughput at lower clock speeds. The multiSPI digital interface allows easy interfacing with a variety of microcontrollers, digital signal processors (DSPs) and field programmable gate arrays (FPGAs).
