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 LMP2022▲ Dual Channel Version MY BRIEFCASE                                       Click any "Briefcase" icon to add an item

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

Datasheet

Title		Size	Date	Other Language
	LMP2021/LMP2022 Zero Drift, Low Noise, EMI Hardened Amplifiers	688 Kbytes	23-Jul-09

Featured Application Notes

Title		Size	Date	Other Language
	AN-1932: Application Note 1932 LMP2021MAEVAL - Bridge Sensor Instrumentation Amplifier Evaluation Board User Guide	176 Kbytes	10-Dec-08

More Application Notes

Title		Size	Date	Other Language
	AN-1873: Application Note 1873 DC Parameters	249 Kbytes	19-Jun-08	中文

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMP2021MA	VIP50CLZ3	0	1755	0	0	315000	12	89382110
LMP2021MAX	VIP50CLZ3	0	1755	0	0	315000	12	89382110
LMP2021MF	VIP50CLZ3	0	1755	0	0	315000	12	89382110
LMP2021MFE	VIP50CLZ3	0	1755	0	0	315000	12	89382110
LMP2021MFX	VIP50CLZ3	0	1755	0	0	315000	12	89382110

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.

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