LMP8640 Datasheet (National Semiconductor) - Precision High Voltage Current Sense Amplifier

LMP8640, Precision High Voltage Current Sense Amplifier

The LMP8640 and the LMP8640HV are precision current sense amplifiers that detect small differential voltages across a sense resistor in the presence of high input common mode voltages with a supply voltage range from 2.7V to 12V.

The LMP8640 accepts input signals with common mode voltage range from

LMP8640 Features

* Typical values, TA = 25°C

* High common-mode voltage range -2V to 42V

* LMP8640 -2V to 76V

* LMP8640HV 2.7V to 12V

* Supply voltage range 20V/V; 50V/V; 100V/V

* Gain options 0.25%

* Max gain error 900µV

* Low offset voltage 13 μA

* Input bias current 85 dB