22 MHz GBW with 6 µV offset — precision without the calibration tax
The LMP7731MFE/NOPB from Texas Instruments is a single-channel general-purpose op amp that delivers 22 MHz gain-bandwidth product and 6 µV typical input offset voltage. For a precision DC front-end — strain gauge, thermocouple, or current-sense amplifier — that offset level means the software nulling routine can be a single-point calibration or skipped entirely if the system budget allows 0.01% error from the amplifier alone.
Supply flexibility and temperature range
Operates from 1.8 V to 5.5 V single supply, covering both 3.3 V and 5 V logic rails without a second regulator. The rail-to-rail output stage swings within 50 mV of the supply rails at light load, preserving dynamic range in low-voltage signal chains. Rated for -40°C to 125°C ambient, this part fits industrial control modules, automotive sensor interfaces, and outdoor equipment where the enclosure sees thermal cycling. The 2.5 mA supply current per channel is a reasonable trade-off for the 22 MHz bandwidth — a lower-power op amp would trade GBW for quiescent draw.
Package and sourcing reality
Housed in a 5-pin SOT-23-5 (SC-74A) package, the LMP7731MFE/NOPB occupies about 3 mm² of board area. The NOPB suffix indicates lead-free (Pb-free) finish, confirmed by ROHS3 compliance — no exemption issues for EU or California markets.