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Precision op amps (Vos<1mV)

LMP2021

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Zero Drift, Low Noise, EMI Hardened Single Amplifier

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Data sheet

LMP2021

ACTIVE
Data sheet Order now

Product details

Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.2 Vos (offset voltage @ 25 C) (Max) (mV) 0.005 GBW (Typ) (MHz) 5 Features EMI Hardened, Zero Drift Slew rate (Typ) (V/us) 2.6 Rail-to-rail In to V-, Out Offset drift (Typ) (uV/C) 0.004 Iq per channel (Typ) (mA) 0.95 Vn at 1 kHz (Typ) (nV/rtHz) 11 CMRR (Typ) (dB) 139 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 100 Output current (Typ) (mA) 50 Architecture CMOS
Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.2 Vos (offset voltage @ 25 C) (Max) (mV) 0.005 GBW (Typ) (MHz) 5 Features EMI Hardened, Zero Drift Slew rate (Typ) (V/us) 2.6 Rail-to-rail In to V-, Out Offset drift (Typ) (uV/C) 0.004 Iq per channel (Typ) (mA) 0.95 Vn at 1 kHz (Typ) (nV/rtHz) 11 CMRR (Typ) (dB) 139 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 100 Output current (Typ) (mA) 50 Architecture CMOS
SOIC (D) 8 19 mm² 4.9 x 3.9 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6

    (Typical Values, TA = 25°C, VS = 5 V)

  • 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 2.2 V to 5.5 V
  • 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 VSSOP and 8-Pin SOIC Packages

    (Typical Values, TA = 25°C, VS = 5 V)

  • 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 2.2 V to 5.5 V
  • 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 VSSOP and 8-Pin SOIC Packages

The LMP2021 and 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 LMP202x has 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 auto zero correction circuitry ensures 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 LMP202x are suitable for low frequency applications such as industrial precision weigh scales. 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 LMP202x 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 VSSOP and 8-Pin SOIC packages.

The LMP2021 and 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 LMP202x has 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 auto zero correction circuitry ensures 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 LMP202x are suitable for low frequency applications such as industrial precision weigh scales. 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 LMP202x 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 VSSOP and 8-Pin SOIC packages.
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Technical documentation

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Type Title Date
* Data sheet LMP202x Zero-Drift, Low-Noise, EMI-Hardened Amplifiers datasheet (Rev. G) PDF | HTML 29 Feb 2016
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Analog Design Journal Industrial-strength design considerations to prevent thermal and EMI damage 11 Apr 2014
Technical article Let there be light: Converting light into voltage 24 Jan 2014
User guide LMP2021MAEVAL - Bridge Sensor Instrumentation Amp Evaluation Board User Guide (Rev. A) 22 Apr 2013

Design & development

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Evaluation board

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Evaluation board

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User guide: PDF
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Support software

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SNOM099E.ZIP (30 KB) - PSpice Model
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SNOM645C.TSC (318 KB) - TINA-TI Reference Design
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LMP202x TINA-TI Spice Model (Rev. C)

SNOM644C.ZIP (11 KB) - TINA-TI Spice Model
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Calculation tool

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Calculation tool

OPAMP-NOISECALC — Noise Calculator, Generator and Examples

This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:
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CIRCUIT060011 — Single-supply, second-order, multiple feedback high-pass filter circuit

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CIRCUIT060016 — Non-inverting microphone pre-amplifier circuit

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CIRCUIT060074 — High-side current sensing with comparator circuit

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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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Simulation tool

TINA-TI — SPICE-based analog simulation program

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Package Pins Download
SOIC (D) 8 View options
SOT-23 (DBV) 5 View options

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