Nanopower dual op-amp for always-on sensing
The LPV812DGKR: Each amplifier draws just 425 nA of supply current, making it suited for battery-powered instrumentation, energy-harvesting sensor interfaces, and portable medical devices where the signal chain must run continuously without draining the cell.
The 8 kHz gain-bandwidth product sets the usable frequency range for closed-loop gain. At a gain of 10, the -3 dB bandwidth drops to 800 Hz; at a gain of 100, it is 80 Hz. This is a DC-to-low-frequency amplifier — think thermocouple conditioning, strain-gauge bridges, photodiode current sensing with a large feedback capacitor, or biasing a reference buffer. The 0.0021 V/µs slew rate means the output takes about 2.4 µs to swing 5 mV. Full 5 V step slews in roughly 2.4 ms, so this part cannot track audio or ripple above a few hertz without distortion. It is intentionally slow to keep the quiescent current at 425 nA.
55 µV offset and 0.1 pA bias current — precision without the power penalty
Input offset voltage is typically 55 µV, which is tight for a nanopower amplifier and reduces the need for digital calibration in precision DC paths. The 0.1 pA input bias current, enabled by the CMOS input stage, means the amplifier does not load high-impedance sources like pH probes, pyroelectric sensors, or megohm-range resistor dividers. These two specs together let the LPV812DGKR sit in a signal chain that would otherwise require a chopper-stabilized or auto-zero amplifier, saving the extra supply current those topologies demand.
The MSL rating should be confirmed from the reel label, but the small body and lead pitch are typical of MSL 1 or 2 parts.
For dual-sourcing resilience, the parametric landscape includes the TLV9362IDDFR (10.6 MHz, 2.6 mA supply) and the OPA4374AIPWT (6.5 MHz, 600 µA, quad channel) — both are faster, higher-power alternatives, not pin-compatible drop-ins. No official second-source cross-reference is published for this exact order code.