Figure 123. Standalone Mode: External Gain Setting Mode - STMicroelectronics RM0365 Reference Manual

RM0365 Operational amplifier (OPAMP)

Figure 123. Standalone mode: external gain setting mode

1. This figure gives an example in an inverting configuration. Any other option is possible, including
comparator mode.
Follower configuration mode
The amplifier can be configured as a follower, by setting the VM_SEL bits to 11 in the
OPAMPx_CR register. This allows you for instance to buffer signals with a relatively high
impedance. In this case, the inverting inputs are free and the corresponding ports can be
used as regular I/Os.
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