Dual op-amp for low-power signal conditioning
The ROHM LMR932F-GE2 is a dual-channel, general-purpose operational amplifier in an 8-SOP surface-mount package. It delivers a 1.4 MHz gain-bandwidth product and a 0.35 V/µs slew rate, with rail-to-rail output swing that lets it drive ADC inputs or low-impedance loads without losing headroom near the supply rails.
The 1.4 MHz gain-bandwidth product sets the usable closed-loop bandwidth for small-signal amplification. For a gain-of-10 stage, expect a -3 dB point around 140 kHz — enough for audio-frequency filtering, transducer conditioning, or low-speed ADC drive. The 0.35 V/µs slew rate limits large-signal response: a 2 V peak-to-peak output step slews in about 5.7 µs, so this part is not intended for fast pulse amplification or high-frequency switching. Keep signal edges slower than that to avoid slew-induced distortion.
Supply range and quiescent current
Quiescent current is 140 µA per amplifier — low enough for always-on sense circuits in battery-powered equipment, but not the ultra-micro-power tier (sub-10 µA) found in energy-harvesting nodes.
Input offset voltage is 1 mV typical, input bias current 5 nA — adequate for general-purpose precision but not instrumentation-grade. The rail-to-rail output helps maintain dynamic range at low supply voltages.