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And why ECG needs gain of 1000? Let's calculate resolution at the input of 20-bit DelSig_ADC in differential more with buffer scale set to V(-) +/-.125Vref: V=(+/-) 0.125 * 1.024V / 2^20 = 0.12uV. This is very high precision without using any amplifier in front of ADC, input noise will be much higher than that. Should you use ADC_SAR, OpAmp would be appropriate.
How should I configure DelSig_ADC if I want to measure ECG signal?
So, input mode-differential, resolution-20, and what about other parameters (such as input range etc)?
Thank you very much in advance