-

+

1/2

LMP2022

0.1 PF

-

+

1/2

LMP2022

0.1 PF

5.1 k:

0.1%

5.1 k:

0.1%

200:

200:

280:

+

-

LMP2021

ADC161S626

+

-

1 k:

1 k:

EMI

180:

470 pF

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LMP2021, LMP2022

SNOSAY9F – SEPTEMBER 2008 – REVISED DECEMBER 2014

LMP202x Zero-Drift, Low-Noise, EMI-Hardened Amplifiers

1 Features

3 Description

The LMP2021 and LMP2022 are single and dual

1

precision operational amplifiers offering ultra low input

•

Input Offset Voltage (Typical)

−0.4 µV

offset voltage, near zero input offset voltage drift, very

•

Input Offset Voltage (Max) ±5 µV

low 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 LMP202x has only 0.004 µV/°C of input offset

•

voltage drift, and 0.4 µV of input offset voltage. These

•

Open Loop Gain 160 dB

attributes provide great precision in high accuracy

•

CMRR 139 dB

applications.

•

PSRR 130 dB

The proprietary continuous auto zero correction

•

Supply Voltage Range 2.2 V to 5.5 V

circuitry ensures impressive CMRR and PSRR,

removes the 1/f noise component, and eliminates the

•

Supply Current (per Amplifier) 1.1 mA

need for calibration in many circuits.

•

Input Bias Current ±25 pA

•

GBW 5 MHz

noise and no 1/f noise component, the LMP202x are

•

Slew Rate 2.6 V/µs

suitable for low frequency applications such as

•

Operating Temperature Range

−40°C to 125°C

industrial precision weigh scales. The extremely high

open loop gain of 160 dB drastically reduces gain

•

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

error in high gain applications. With ultra precision

Packages

DC specifications and very low noise, the LMP202x

are ideal for position sensors, bridge sensors,

2 Applications

pressure sensors, medical equipment and other high

•

Precision Instrumentation Amplifiers

accuracy applications with very low error budgets.

•

Battery Powered Instrumentation

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

•

Thermocouple Amplifiers

SOIC packages. The LMP2022 is offered in 8-Pin

VSSOP and 8-Pin SOIC packages.

•

Bridge Amplifiers

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

SOIC (8)

4.90 mm x 3.91 mm

LMP2021

SOT-23 (5)

2.90 mm x 1.60 mm

SOIC (8)

4.90 mm x 3.91 mm

LMP2022

VSSOP (8)

3.00 mm x 3.00 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Bridge Amplifier

The LMP202x support systems with up to 24 bits of accuracy.

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.