External fine-tuning CMR circuit of RCV420
Source: InternetPublisher:super_star Keywords: OPA237 common mode rejection Updated: 2024/09/09
As shown in the figure, the common mode rejection ratio is adjusted using OPA237. Connect the common mode voltage CMV to the Cr terminal, connect a voltmeter to the output terminal, and adjust the 200Ω potentiometer to make the voltmeter indicate close to zero.
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