The LMP8271 and LMP8276 are high common-mode precision, gain of 20, bidirectional precision voltage difference amplifiers
The LMP8271 and LMP8276 are fixed gain differential amplifiers designed to detect, amplify, and filter small differential signals in the presence of high common mode voltages. These devices feature a fixed gain of 20, achieved through a two-stage architecture consisting of a pre-amplifier with a gain of +10 and a second stage amplifier with a gain of +2. They are suitable for applications requiring bidirectional current sensing, such as fuel injection control and power management systems.
| Gain | 20 |
|---|---|
| Input Offset Voltage | 1mV max |
| CMRR | 80dB Min |
| Supply Voltage | 4.5V to 5.5V |
| Bandwidth | 80KHz |
| Operating Temperature Range | -40°C to 125°C |
| Supply Current | 1mA |
The input common mode voltage range is -2V to 27V.
Yes, the midrail offset adjustment pin enables the user to utilize this device for bidirectional current sensing.
The typical slew rate is 0.7 V/us.