LMP2231

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SNOSB01E – JANUARY 2008 – REVISED MARCH 2013

LMP2231 Single Micropower, 1.6V, Precision Operational Amplifier with CMOS Inputs

Check for Samples: LMP2231

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FEATURES

DESCRIPTION

The LMP2231 is a single micropower precision

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

amplifier designed for battery powered applications.

Otherwise Noted)

The 1.6V to 5.5V operating supply voltage range and

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Supply Current 10 µA

quiescent power consumption of only 16

μW extend

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Operating Voltage Range 1.6V to 5.5V

the battery life in portable battery operated systems.

The LMP2231 is part of the LMP™ precision amplifier

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TCVOS (LMP2231A) ±0.4 µV/°C (max)

family. The high impedance CMOS input makes it

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TCVOS (LMP2231B) ±2.5µV/°C (max)

ideal for instrumentation and other sensor interface

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VOS ±150 µV (max)

applications.

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Input Bias Current 20 fA

The LMP2231 has a maximum offset of 150 µV and

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PSRR 120 dB

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

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

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CMRR 97 dB

specifications make the LMP2231 a great choice for

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Open Loop Gain 120 dB

maintaining system accuracy and long term stability.

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Gain Bandwidth Product 130 kHz

The LMP2231 has a rail-to-rail output that swings 15

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Slew Rate 58 V/ms

mV from the supply voltage, which increases system

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Input Voltage Noise, f = 1 kHz 60 nV/

√Hz

dynamic range. The common mode input voltage

range extends 200 mV below the negative supply,

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Temperature Range –40°C to 125°C

thus the LMP2231 is ideal for use in single supply

applications with ground sensing.

APPLICATIONS

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

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Precision Instrumentation Amplifiers

SOIC packages.

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Battery Powered Medical Instrumentation

The dual and quad versions of this product are also

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High Impedance Sensors

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

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Strain Gauge Bridge Amplifier

SOIC and VSSOP. The quad, LMP2234 is offered in

14-pin SOIC and TSSOP.

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Thermocouple Amplifiers

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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LMP is a trademark of Texas Instruments.

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All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.