LMP2021 - Zero Drift, Low Noise, EMI Hardened Amplifier
Datasheet Packaging Samples & Pricing Eval. Boards Reliability Models Knowledge Base

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

General 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. More...


Applications

•Precision instrumentation amplifiers
•Battery powered instrumentation
•Thermocouple amplifiers
•Bridge amplifiers
  Typical Application
*click for larger image


ParametersValues
Offset Voltage max, 25C 0.005 mV
TcVos 0.004 uV/degC
CMRR 139 dB
PSRR 139 dB
Avol 160 dB
Voltage Noise 11 nV/root(Hz)
Max Input Bias Current 0.025 nA
Gain Bandwidth 5 MHz
Supply Current Per Channel 1.1 mA
PowerWise Rating 2 220 uA/MHz
Slew Rate 2.6 Volts/usec
Channels 1 Channels
Supply Min 2.2 Volt
Supply Max 5.5 Volt
Input OutputType Vcm to V-, R-R Out
Output Current 50 mA
Shut down No
Special Features Low Noise, EMI Hardened
Temperature Min -40 deg C
Temperature Max 125 deg C
Function Op Amp
Automotive Yes
PowerWise No


Typical Performance

*click for larger image


  Also Recommended
LMP2022▲Dual Channel Version
Connection Diagram
*click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LMP2021/LMP2022 Zero Drift, Low Noise, EMI Hardened Amplifiers 688
Kbytes		 23-Jul-09 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.


Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LMP2021MASOIC NARROW8NOPB1260RoHS N/A Full productionLMP2021.MOD
Samples
Buy Now 		1K+$1.45rail
of
95		NSZXTT
LMP20
21MA
6 weeks500
LMP2021MAXSOIC NARROW8NOPB1260RoHS N/A Full productionLMP2021.MOD
 
Buy Now 		1K+$1.45reel
of
2500		NSZXTT
LMP20
21MA
8 weeks3000
LMP2021MFESOT-235NOPB1260RoHS N/A Full productionLMP2021.MOD
Samples
Buy Now 		1K+$1.45reel
of
250		AF5A
XTT
6 weeks500
LMP2021MFSOT-235NOPB1260RoHS N/A Full productionLMP2021.MOD
 
Buy Now 		1K+$1.45reel
of
1000		AF5A
XTT
6 weeksN/A
LMP2021MFXSOT-235NOPB1260RoHS N/A Full productionLMP2021.MOD
 
Buy Now 		1K+$1.45reel
of
3000		AF5A
XTT
6 weeksN/A
LMP2021MAEVALLMP2021MA Bridge Sensor Instrumentation Amplifier Evaluation BoardFull productionLMP2021.MOD
 
Buy Now 		1+$100.001-
N/AN/A

General 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.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LMP2021MAVIP50CLZ301755003150001289382110
LMP2021MAXVIP50CLZ301755003150001289382110
LMP2021MFVIP50CLZ301755003150001289382110
LMP2021MFEVIP50CLZ301755003150001289382110
LMP2021MFXVIP50CLZ301755003150001289382110

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.


Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-1932: Application Note 1932 LMP2021MAEVAL - Bridge Sensor Instrumentation Amplifier Evaluation Board User Guide 176
Kbytes		 10-Dec-08 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 7-Nov-2009]