2.1 Voltage Follower

The OPAMP peripheral is highly flexible and can be used in various analog signal conditioning applications. One of these applications is the voltage follower.

Figure 2-2. Voltage Follower
The figure above displays a voltage follower, also known as a unity-gain buffer. The non-inverting (+) input is connected to a pin, and the output is connected to the inverting (-) input. The multiplexer settings required for this configuration are:
Table 2-2. Voltage Follower Input Configurations
MUXPOSMUXNEG
OP0Voltage referenceOUT