29.4.2.2 Gain Control Using External Resistors

The Op Amp supports non-unity gain configurations through the use of external resistors. To configure the Op Amp in this gain configuration, set the UGE bit to ‘0’ in the AMPxCON1 register.

Op Amp Fixed Gain Amplifier with External Resistor

AMP1CON1bits.AMPEN = 1;    //Enable Op Amp 1
AMP1CON1bits.UGE = 0;      //Disable unity gain mode

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