LMP8277 - National Semiconductor

LMP8277 (LMP8272 / LMP8277) Precision Voltage Difference Amplifiers

The LMP™8272, LMP8277 are fixed gain differential amplifiers with a -2V to 27V input common mode voltage range and a supply voltage range of 4.5V to 5.5V. The LMP8272, LMP8277 are precision amplifiers which will detect, amplify and filter small differential signals in the presence of high common mode voltages. The gain is fixed at 14 and is adequate to drive.

Features

n n n n n n n n n n n n Typical Values, TA = 25˚C Input Offset Voltage 1mV max TCVos (LMP8272) 15µV/˚C max TCVos (LMP8277) 30µV/˚C max CMRR 80dB Min Extended CMVR -5V to 36V Output Voltage Swing Rail to Rail Bandwidth 80KHz Operating Temperature Range (Ambient) -40˚C to 125˚C Operating Temperature Range (bare die) -40˚C to 150˚C Supply Voltage 4.5V to 5.5V Supply Current 1mA Applications n Fuel Injection Control n Low Side Driver Configuration Current Sensing n Power Management Systems Typical Application Typical Application: Low side Current Sensing 20130901 LMP™ is a trademark of Nationa.