Hi Sharma,
In addition to Clemens comments, you may consider the instrumentation amplifier, INA333 was very popular in that application, but we have tons of instrumentation to choose from.
0743.ECG an EEG Applications.pdf
https://www.ti.com/amplifier…
Hi Ashwin,
What is the max and min input signal to the preamplifier? Is this single power supply or split power supply?
ECG and EEG quick reference guide.
4137.ECG an EEG Applications.pdf
Best Regards,
Chris Featherstone
Keivan,
Using two 1M resistors instead of 2.8k shown in INA128 datasheet sets the gain of INA128 to G=1.025, and thus as you said minimizes amplification of the signal1, but this is a wrong signal since INA128 amplifies differential and not common-mode…
