SBOS464A October 2019 – May 2020 INA333-Q1
Most applications require no external offset adjustment. However, if necessary, adjustments can be made by applying a voltage to the REF pin. Figure 33 shows an optional circuit for trimming the output offset voltage. The voltage applied to REF pin is summed at the output. The operational amplifier buffer provides low impedance at the REF pin to preserve good common-mode rejection.