Texas Instruments LMP8272
The LMP8272 is a fixed gain differential amplifier with a −2V to 16V input common mode voltage range and a supply voltage range of 4.75V to 5.5V. The LMP8272 is part of the LMP™ precision amplifier family 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 an ADC to full scale in most cases.| Part No. | LMP8272 |
|---|---|
| Datasheet | LMP8272 Download |
| Manufacturer |  Texas Instruments |
| Description | Precision Voltage Difference Amplifier |
| Buy | Stock & Price |
FEATURES
1●23 Typical Values, TA = 25°C
● Input Offset Voltage: ±1 mV Max
● TCVOS: ±15 μV/°C Max
● CMRR: 80 dB Min
● Output Voltage Swing: Rail-to-Rail
● Bandwidth: 80 kHz
● Operating Temperature Range (Ambient): −40°C to 125°C
● Supply Voltage: 4.75V to 5.5V
● Supply Current: 1 mA
APPLICATIONS
● Fuel Injection Control● High and Low Side Driver Configuration Current Sensing
● Power Management Systems
DESCRIPTION
This fixed gain is achieved in two separate stages, a pre-amplifier with gain of +7 and a second stage amplifier with a gain of +2. The internal signal path between these two stages is brought out on two pins that provide a connection for a filter network. The LMP8272 will function over an extended common mode input voltage range making the device suitable for applications with load dump events such as automotive systems. TYPICAL APPLICATION + UP TO 16V - LMP8272 INDUCTIVE LOAD +IN RSENSE -IN PROPRIETARY LEVEL - SHIFT CIRCUITRY VS = 4.75V to 5.5V + A1 GAIN = 7 - 100 k: A2 GAIN = 2 OUT POWER SWITCH GND A1 A2 Figure 1.
