41.6.8 Configuring the Operational Amplifiers

Each individual operational amplifier is configured by its respective Operational Amplifier Control x register (OPAMPCTRLx). These settings must be configured before the amplifier is started.

• 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.