The recommended layout and routing for the ADS7871IDB involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the analog input traces. It's also recommended to use a 4-layer PCB with a dedicated analog power plane and a dedicated digital power plane.
To optimize the performance of the ADS7871IDB in noisy environments, use a low-pass filter at the input, use a shielded cable for the analog input, and consider using a common-mode filter. Additionally, ensure that the analog and digital grounds are separated and that the digital noise is not coupled into the analog circuitry.
The maximum sampling rate of the ADS7871IDB is 1.5 MSPS (mega-samples per second). However, the actual sampling rate may be limited by the system clock frequency, the conversion time, and the settling time of the analog input.
The ADS7871IDB does not require calibration. It has an internal calibration circuit that performs a self-calibration sequence during power-up. However, if the device is used in a system that requires calibration, an external calibration circuit can be implemented using the CAL pin.
The power consumption of the ADS7871IDB depends on the operating mode and the clock frequency. In normal operation, the typical power consumption is around 15 mW at 1.5 MSPS. In power-down mode, the typical power consumption is around 10 μW.
ADS7871IDB datasheet
by Texas Instruments
