Know Now – Designing AC Coupling & Gaining Solution in One Stage Using…
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Know Now – Designing AC Coupling & Gaining Solution in One Stage Using…

In applications such as electromagnetic flow (EM flow) meters and biopotential measurements, small differential signals are in series with much larger differential offsets. These offsets typically limit the gain that the circuit can take in the front-end design, which in turn impacts the overall dynamic range. The gain limitation is even more challenging when lower supply voltages are used—for example, in battery-powered signal chains. One solution to address this large differential offset issue is to use an AC-coupled measurement signal chain.
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