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1FEATURES

23(For VS = 5V, Typical Unless Otherwise Noted)

? Supply Current at 1.8V 31 μA

? Operating Voltage Range 1.6V to 5.5V

? Low TCVOS ±0.75 μV/°C (max)

? V OS ±150 μV (max)

? Input Bias Current ±20 fA

? PSRR 120 dB

? CMRR 97 dB

? Open Loop Gain 120 dB

? Gain Bandwidth Product 130 kHz

? Slew Rate 58 V/ms

? Input Voltage Noise, f = 1 kHz 60 nV/√Hz

? Temperature Range –40°C to 125°C

APPLICATIONS

? Precision Instrumentation Amplifiers

? Battery Powered Medical Instrumentation

? High Impedance Sensors

? Strain Gauge Bridge Amplifier

? Thermocouple Amplifiers

DESCRIPTION

The LMP2234 is a quad micropower precision

amplifier designed for battery powered applications.

The 1.6 to 5.5V operating supply voltage range and

quiescent power consumption of only 50 μW extend

the battery life in portable systems. The LMP2234 is

part of the LMP? precision amplifier family. The high

impedance CMOS input makes it ideal for

instrumentation and other sensor interface

applications.

The LMP2234 has a maximum offset voltage of 150

μV and 0.3 μV/°C offset drift along with low bias

current of only ±20 fA. These precise specifications make the LMP2234 a great choice for maintaining

system accuracy and long term stability.

The LMP2234 has a rail-to-rail output that swings 15

mV from the supply voltage, which increases system

dynamic range. The common mode input voltage

range extends 200 mV below the negative supply,

thus the LMP2234 is ideal for ground sensing in single supply applications.

The LMP2234 is offered in 14-Pin SOIC and TSSOP

packages.