LMP2021, LMP2022

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SNOSAY9E – SEPTEMBER 2008 – REVISED MARGH 2013

LMP2021/LMP2022 Zero Drift, Low Noise, EMI Hardened Amplifiers

Check for Samples: LMP2021, LMP2022

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FEATURES

DESCRIPTION

The LMP2021/LMP2022 are single and dual precision

23

operational amplifiers offering ultra low input offset

•

Input Offset Voltage (Typical)

−0.4 µV

voltage, near zero input offset voltage drift, very low

•

Input Offset Voltage (Max) ±5 µV

input voltage noise and very high open loop gain.

They are part of the LMP™ precision family and are

•

Input Offset Voltage Drift (Typical) -0.004 µV/°C

ideal for instrumentation and sensor interfaces.

•

Input Offset Voltage Drift (Max) ±0.02 µV/°C

The LMP2021/LMP2022 have only 0.004 µV/°C of

•

input offset voltage drift, and 0.4 µV of input offset

•

Open Loop Gain 160 dB

voltage. These attributes provide great precision in

•

CMRR 139 dB

high accuracy applications.

•

PSRR 130 dB

The

proprietary

continuous

correction

circuitry

•

Supply Voltage Range 2.2V to 5.5V

ensures impressive CMRR and PSRR, removes the

1/f noise component, and eliminates the need for

•

Supply Current (per Amplifier) 1.1 mA

calibration in many circuits.

•

Input Bias Current ±25 pA

•

GBW 5 MHz

noise

and

no

1/f

noise

component,

the

•

Slew Rate 2.6 V/µs

LMP2021/LMP2022 are suitable for low frequency

•

Operating Temperature Range

−40°C to 125°C

applications such as industrial precision weigh scales.

The low input bias current of 23 pA makes these

•

5-Pin SOT-23, 8-Pin VSSOP and 8-Pin SOIC

excellent choices for high source impedance circuits

Packages

such as non-invasive medical instrumentation as well

as test and measurement equipment. The extremely

APPLICATIONS

high open loop gain of 160 dB drastically reduces

•

Precision Instrumentation Amplifiers

gain error in high gain applications. With ultra

precision DC specifications and very low noise, the

•

Battery Powered Instrumentation

LMP2021/LMP2022 are ideal for position sensors,

•

Thermocouple Amplifiers

bridge sensors, pressure sensors, medical equipment

•

Bridge Amplifiers

and other high accuracy applications with very low

error budgets.

The LMP2021 is offered in 5-Pin SOT-23 and 8-Pin

SOIC packages. The LMP2022 is offered in 8-Pin

VSSOP and 8-Pin SOIC packages.

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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.

2

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.