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Precision op amps (Vos<1mV)

LPV811

ACTIVE

Single Channel 450nA Precision Nanopower Operational Amplifier

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Data sheet

LPV811

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) 1.6 Vos (offset voltage @ 25 C) (Max) (mV) 0.37 GBW (Typ) (MHz) 0.008 Features EMI Hardened Slew rate (Typ) (V/us) 0.002 Rail-to-rail In to V-, Out Offset drift (Typ) (uV/C) 1 Iq per channel (Typ) (mA) 0.00045 Vn at 1 kHz (Typ) (nV/rtHz) 420 CMRR (Typ) (dB) 95 Rating Catalog Operating temperature range (C) -40 to 125 Output current (Typ) (mA) 4.7 Architecture CMOS
Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.6 Vos (offset voltage @ 25 C) (Max) (mV) 0.37 GBW (Typ) (MHz) 0.008 Features EMI Hardened Slew rate (Typ) (V/us) 0.002 Rail-to-rail In to V-, Out Offset drift (Typ) (uV/C) 1 Iq per channel (Typ) (mA) 0.00045 Vn at 1 kHz (Typ) (nV/rtHz) 420 CMRR (Typ) (dB) 95 Rating Catalog Operating temperature range (C) -40 to 125 Output current (Typ) (mA) 4.7 Architecture CMOS
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • Nanopower Supply Current: 425 nA/channel
  • Offset Voltage: 300 µV (max)
  • TcVos: 1 µV/°C
  • Gain-Bandwidth: 8 kHz
  • Unity-Gain Stable
  • Low Input Bias Current : 100 fA
  • Wide Supply Range: 1.6 V to 5.5 V
  • Rail-to-Rail Output
  • No Output Reversals
  • EMI Protection
  • Temperature Range: –40°C to 125°C
  • Industry Standard Packages:
    • Single in 5-pin SOT-23
    • Dual in 8-pin VSSOP
  • Nanopower Supply Current: 425 nA/channel
  • Offset Voltage: 300 µV (max)
  • TcVos: 1 µV/°C
  • Gain-Bandwidth: 8 kHz
  • Unity-Gain Stable
  • Low Input Bias Current : 100 fA
  • Wide Supply Range: 1.6 V to 5.5 V
  • Rail-to-Rail Output
  • No Output Reversals
  • EMI Protection
  • Temperature Range: –40°C to 125°C
  • Industry Standard Packages:
    • Single in 5-pin SOT-23
    • Dual in 8-pin VSSOP

The LPV811 (single) and LPV812 (dual) are a ultra-low-power precision operational amplifier family for “Always ON” sensing applications in battery powered wireless and low power wired equipment. With 8 kHz of bandwidth from 425 nA of quiescent current and a trimmed offset voltage to under 300µV, the LPV81x amplifiers provide the required precision while minimizing power consumption in equipment such as gas detectors and portable electronic devices where operational battery-life is critical.

In addition to being ultra-low-power, the LPV81x amplifiers have CMOS input stages with fempto-amp bias currents for impedance source applications. The LPV81x amplifiers also feature a negative-rail sensing input stage and a rail-to-rail output stage that swings within millivolts of the rails, maintaining the widest dynamic range possible. EMI protection is designed into the LPV81x in order to reduce system sensitivity to unwanted RF signals from mobile phones, WiFi, radio transmitters, and tag readers.

The LPV811 (single) and LPV812 (dual) are a ultra-low-power precision operational amplifier family for “Always ON” sensing applications in battery powered wireless and low power wired equipment. With 8 kHz of bandwidth from 425 nA of quiescent current and a trimmed offset voltage to under 300µV, the LPV81x amplifiers provide the required precision while minimizing power consumption in equipment such as gas detectors and portable electronic devices where operational battery-life is critical.

In addition to being ultra-low-power, the LPV81x amplifiers have CMOS input stages with fempto-amp bias currents for impedance source applications. The LPV81x amplifiers also feature a negative-rail sensing input stage and a rail-to-rail output stage that swings within millivolts of the rails, maintaining the widest dynamic range possible. EMI protection is designed into the LPV81x in order to reduce system sensitivity to unwanted RF signals from mobile phones, WiFi, radio transmitters, and tag readers.
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LPV821 ACTIVE 650nA, Precision Zero-Drift Nanopower Amplifier This device offers significant improvement in offset voltage (10 µV) and offset drift (0.096µV/°C) due to its zero-drift architecture

Technical documentation

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Type Title Date
* Data sheet LPV811/LPV812 Precision 425 nA Nanopower Operational Amplifiers datasheet (Rev. B) PDF | HTML 01 Nov 2016
Application note Nano-Power Transimpedance Amplifier for Current Output Sensors 07 Mar 2018
Application note Extend Battery Life and Simplify Calibration in Gas Sensing Applications (Rev. A) 06 Feb 2018
Application note Nano-Power Battery Monitoring in Personal Electronics 08 Dec 2017
Technical article How to make precision measurements on a nanopower budget, part 1: DC gain in nanopower op amps 06 Dec 2017
White paper Cities grow smarter through innovative semiconductor technologies 07 Jul 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Technical article How to improve IoT designs with a nanopower EMI-tolerant op amp 09 Nov 2016
Application note Precision Voltage Offset: When Does it Matter? (Rev. A) 02 Nov 2016
Application note Comparing EMI Performance of LPV802 with Other Devices in a Gas Sensor App 18 Oct 2016

Design & development

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Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

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Simulation model

LPV81x TINA-TI Spice Model (Rev. A) LPV81x TINA-TI Spice Model (Rev. A)

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LPV81x TINA-TI Reference Design (Rev. A) LPV81x TINA-TI Reference Design (Rev. A)

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LPV81x PSpice Model LPV81x PSpice Model

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Simulation tool

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

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI SPICE-based analog simulation program

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Calculation tool

ANALOG-ENGINEER-CALC Analog engineer's calculator

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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:
  • A noise generator tool - This is a Lab View 4-Run Time executable that generates Gaussian white noise, uniform white noise, 1/f noise, short noise, and 60Hz line noise. Temporal data, (...)
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Design tool

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CIRCUIT060003 Temperature sensing with PTC thermistor circuit

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CIRCUIT060004 Low-noise and long-range PIR sensor conditioner circuit

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CIRCUIT060006 Bridge amplifier circuit

A strain gauge is a sensor whose resistance varies with applied force. To measure the variation in resistance, the strain gauge is placed in a bridge configuration. This design uses a 2 op amp instrumentation circuit to amplify a differential signal created by the change in resistance of a strain (...)
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CIRCUIT060007 Low-side, bidirectional current-sensing circuit

This single-supply low-side, bidirectional current sensing solution can accurately detect load currents from –1A to 1A. The linear range of the output is from 110mV to 3.19V. Low-side current sensing keeps the common-mode voltage near ground, and is thus most useful in applications with (...)
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CIRCUIT060008 Full-wave rectifier circuit

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CIRCUIT060009 Half-wave rectifier circuit

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CIRCUIT060010 PWM generator circuit

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CIRCUIT060011 Single-supply, second-order, multiple feedback high-pass filter circuit

The multiple-feedback (MFB) high-pass (HP) filter is a 2nd-order active filter. Vref provides a DC offset to accommodate for single-supply applications. This HP filter inverts the signal (Gain = –1 V/V) for frequencies in the pass band. An MFB filter is preferable when the gain is high or (...)
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CIRCUIT060012 Single-supply, 2nd-order, multiple feedback low-pass filter circuit

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CIRCUIT060014 Voltage-to-current (V-I) converter circuit with MOSFET

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CIRCUIT060016 Non-inverting microphone pre-amplifier circuit

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Reference designs

TIDA-00756 — Always-on Low-power Gas Sensing with 10+ Year Coin Cell Battery Life Reference Design

This reference design uses nano-power operational amplifiers, comparators, system timers, temperature sensors and the SimpleLink™ ultra-low power 2.4-GHz wireless microcontroller (MCU) platform to demonstrate an ultra-low power carbon-monoxide detector implementation. These technologies lead (...)
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SOT-23 (DBV) 5 View options

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