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1FEATURES

23(For VS = 5V, TA = 25°C, Typical Unless

Otherwise Noted)

? Supply Current 10 μA

? Operating Voltage Range 1.6V to 5.5V

? TCV OS (LMP2231A) ±0.4 μV/°C (max)

? TCVOS (LMP2231B) ±2.5μV/°C (max)

? VOS ±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 LMP2231 is a single micropower precision

amplifier designed for battery powered applications.

The 1.6V to 5.5V operating supply voltage range and

quiescent power consumption of only 16 μW extend

the battery life in portable battery operated systems.

The LMP2231 is part of the LMP? precision amplifier

family. The high impedance CMOS input makes it

ideal for instrumentation and other sensor interface

applications.

The LMP2231 has a maximum offset of 150 μV and

maximum offset voltage drift of only 0.4 μV/°C along

with low bias current of only ±20 fA. These precise

specifications make the LMP2231 a great choice for

maintaining system accuracy and long term stability.

The LMP2231 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 LMP2231 is ideal for use in single supply

applications with ground sensing.

The LMP2231 is offered in 5-Pin SOT-23 and 8-pin

SOIC packages.

The dual and quad versions of this product are also

available. The dual, LMP2232 is offered in 8-pin

SOIC and VSSOP. The quad, LMP2234 is offered in

14-pin SOIC and TSSOP.