TP181A1-CR

The TP181A1-CR is the 50 V/V gain ordering code of 3PEAK's TP181, a zero-drift bidirectional current-sense amplifier in 6-pin SC70. The A1 gain step is fixed internally at 50 V/V (siblings A2 and A3 give 100 and 200 V/V), with input offset of plus/minus 10 uV typical and plus/minus 100 uV maximum, offset drift of 0.1 uV per degree C typical, and gain error of plus/minus 0.1 percent typical. The input common-mode range runs from -0.3 V to 36 V while the supply takes 2.7 V to 30 V, the REF pin sets the output zero point for bidirectional (charge/discharge) measurement, supply current is 120 uA typical, and bandwidth at this gain is 48 kHz over -40 to +125 degrees C. 3PEAK positions the family as a higher-performance drop-in for INA199/INA213-class sockets in battery chargers, power management and telecom equipment. Selection advice: pick the gain so the largest expected shunt drop lands mid-scale rather than at the rail - 50 V/V suits higher currents or larger shunts, while the 200 V/V A3 code resolves smaller currents; quote the full TP181A1-CR code, since the gain is set at the factory and cannot be changed by external parts. Parameters verified against 3PEAK documentation.