Hi Brian
We are using TI's ADS1198 8 channels at 250SPS (4ms) rate with 5V AVDD and 4V as internal reference. ADS1198 is connected to a snapdragon via SPI and using android sensor framework to read the data on every DRDY signals. we are facing two issues in our system with ADS1198:
1. sampling rate (sampling period) varies drastically from 1ms to 6ms event though it is set at 250SPS (4ms)
2. signal attenuation happens on the actual signal and it varies as we change the sampling rate, with higher the rate lower attenuation
can you suggest the potential root causes that may lead to these issues and possible test scenarios to exactly pin-point source of the issue?