The recommended layout and routing for the ADS7223SRHBT 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 ADS7223SRHBT 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 or a differential amplifier to reject common-mode noise. Additionally, ensure that the analog and digital grounds are properly separated and decoupled.
The maximum sampling rate of the ADS7223SRHBT is 1 MSPS (million 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 signal.
The ADS7223SRHBT does not require calibration. It has an internal calibration circuit that performs a self-calibration sequence during power-up. However, if you need to perform a system-level calibration, you can use the internal reference voltage and the offset and gain adjustment registers to calibrate the ADC.
The power consumption of the ADS7223SRHBT depends on the operating mode and the sampling rate. In normal operation, the typical power consumption is around 15 mW at 1 MSPS. In power-down mode, the typical power consumption is around 10 μW.
ADS7223SRHBT datasheet
by Texas Instruments
