Hi Ryan, It's Ahmed Sabry from Pulse for integrated solutions, Gain of the PGA is 6, the default one. The analog supply voltage are 5V with respect to the ground, no bi-polar voltages. The reference of the input signals is done internally using CONFIG resisters, which is 2.5V. We are trying to detect the Pacemaker small amplitudes (2mv with 2ms and 2mv with 0.1ms). Would you please specify more details about the test stated on your comment, and what do you mean by disconnection all circuitry?, currently i'm using the external circuit stated in the document issued by Tony Calabria, about the detection of Hardware Pace using Slope Detection, should i remove this circuit??
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