Quad CMOS op-amp with 150 µA per channel — what the supply current buys the BOM
The OPA4345UA/2K5: Each channel draws just 150 µA of supply current, making this part a strong candidate for multi-channel sensor conditioning, portable instrumentation, and battery-operated data-acquisition front-ends where the power budget is tight. The CMOS input stage delivers 0.2 pA input bias current, which means negligible loading on high-impedance sources like photodiodes, pH electrodes, or piezo sensors — no need for a separate buffer stage.
Rail-to-rail output swing preserves dynamic range at low supply voltages — useful when driving an ADC input directly without a level shifter. The input offset voltage is 200 µV, typical for a precision CMOS amplifier at this price point, so the part fits general-purpose signal conditioning without requiring external trimming for most applications.