The OPAMP settings must be configured before the amplifier is enabled. Following is a
brief description of significant bit fields and groups in the Operational Amplifier
Control registers:
- Select the positive input in
OPAMPCTRLx.MUXPOS.
- Select the negative input in
OPAMPCTRLx.MUXNEG.
- Select RES1EN if resistor ladder is used.
- Select the input for the resistor
ladder in OPAMPCTRLx.RES1MUX.
- Select the potentiometer selection of
the resistor ladder in OPAMPCTRLx.POTMUX.
- Select the VCC input for the resistor ladder in OPAMPCTRLx.RES2VCC.
- Connect the operational amplifier
output to the resistor ladder using OPAMPCTRLx.RES2OUT.
- Select the trade-off between speed and
energy consumption in OPAMPCTRLx.BIAS.