Other Parts Discussed in Thread: REF5025, LM324, LM358, OPA192
In the process of using the ads1255 chip to collect the voltage, the registers I set are as follows:
Single-ended acquisition, buffer is turned on, gain=1, self-calibration is turned on, sampling rate is 1000sps, (also tried 2000sps) reference voltage is 2.5v
The voltage is collected by a single conversion method, and the collected voltage occasionally has an error of 1mv, such as 1.406v, then 1.405. Under the accuracy of 24bit, is the fluctuation of 1mv normal?
Is it necessary to lower the sps?