Features (Typical Values, TA = 25°C, VS = 5V) Input offset voltage (typical) −0.4 µV Input offset voltage (max) ±5 µV Input offset voltage drift (typical) -0.004 µV/°C Input offset voltage drift (max) ±0.02 µV/°C Input voltage noise, AV = 1000 11 nV/ √Hz Open loop gain 160 dB CMRR 139 dB PSRR 130 dB Supply voltage range 2.2V to 5.5V Supply current (per amplifier) 1.1 mA Input bias current ±25 pA GBW 5 MHz Slew rate 2.6 V/µs Operating temperature range −40°C to 125°C 5-Pin SOT-23, 8-Pin MSOP and 8-Pin SOIC Packages Description The LMP2021/LMP2022 are single and dual precision operational amplifiers offering ultra low input offset voltage, near zero input offset voltage drift, very low input voltage noise and very high open loop gain. They are part of the LMP precision family and are ideal for instrumentation and sensor interfaces. The LMP2021/LMP2022 have only 0.004 µV/°C of input offset voltage drift, and 0.4 µV of input offset voltage. These attributes provide great precision in high accuracy applications. The proprietary continuous correction circuitry guarantees impressive CMRR and PSRR, removes the 1/f noise component, and eliminates the need for calibration in many circuits. With only 260 nVPP (0.1 Hz to 10 Hz) of input voltage noise and no 1/f noise component, the LMP2021/LMP2022 are suitable for low frequency applications such as industrial precision weigh scales. The low input bias current of 23 pA makes these excellent choices for high source impedance circuits such as non-invasive medical instrumentation as well as test and measurement equipment. The extremely high open loop gain of 160 dB drastically reduces gain error in high gain applications. With ultra precision DC specifications and very low noise, the LMP2021/LMP2022 are ideal for position sensors, bridge sensors, pressure sensors, medical equipment 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 MSOP and 8-Pin SOIC packages. Applications Precision instrumentation amplifiers Battery powered instrumentation Thermocouple amplifiers Bridge amplifiers

Also Recommended LMP2021▲ Single Channel Version

Typical Application click for larger image	Connection Diagram *click for larger image
Typical Performance *click for larger image

Datasheets

Title		Size	Date	Other Language
	LMP2022 Zero Drift, Low Noise, EMI Hardened Amplifier	688 Kbytes	23-Jul-09	日本語

Other Technical Documents

Title		Type	Date
	Don’t Let EMI Disrupt the Signal Path in Your Medical Diagnostic Equipment (Discusses EMI-Hardened Op Amps)	External Article	2010-09-15

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LMP2022MA/NOPB RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 55 DIGI-KEY Worldwide 2815 FARNELL Europe and Asia 615 MOUSER Worldwide 65 NEWARK Americas 86 TAYLOR Americas 55	$1.65 each at 1K+ pcs	rail of 95
LMP2022MAX/NOPB RoHS Status	SOIC NARROW	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$1.65 each at 1K+ pcs	reel of 2500
LMP2022MM/NOPB RoHS Status	MINI SOIC	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$1.65 each at 1K+ pcs	reel of 1000
LMP2022MME/NOPB RoHS Status	MINI SOIC	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 250 AVNET-EM Worldwide 250 DIGI-KEY Worldwide 2585 FARNELL Europe and Asia 202 MOUSER Worldwide 200 NEWARK Americas 201 TAYLOR Americas 250	$1.65 each at 1K+ pcs	reel of 250
LMP2022MMX/NOPB RoHS Status	MINI SOIC	Full production Lead Time: 8 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$1.65 each at 1K+ pcs	reel of 3500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMP2022.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMP2022 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LMP2022MA/NOPB	69.761	SOIC NARROW	8	1	260	Detail	Download	spice file	NSZXTT LMP20 22MA
LMP2022MAX/NOPB	69.761	SOIC NARROW	8	1	260	Detail	Download	spice file	NSZXTT LMP20 22MA
LMP2022MM/NOPB	29.851	MINI SOIC	8	1	260	Detail	Download	spice file	ZXTT AV5A
LMP2022MME/NOPB	29.851	MINI SOIC	8	1	260	Detail	Download	spice file	ZXTT AV5A
LMP2022MMX/NOPB	29.851	MINI SOIC	8	1	260	Detail	Download	spice file	ZXTT AV5A

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMP2022.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMP2022 is located at RoHS Status.

CAD Symbols and Models Download LMP2022 CAD Symbols

Models spice file

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMP2022MA	VIP50CLZ3	0	5670	0	0	945000	4	268146330
LMP2022MAX	VIP50CLZ3	0	5670	0	0	945000	4	268146330
LMP2022MM	VIP50CLZ3	0	5670	0	0	945000	4	268146330
LMP2022MME	VIP50CLZ3	0	5670	0	0	945000	4	268146330
LMP2022MMX	VIP50CLZ3	0	5670	0	0	945000	4	268146330

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMP2022.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMP2022 is located at RoHS Status.