National Semiconductor | High-performance Analog

 

 LMV834   

Quad 3.3 MHz Low Power CMOS, EMI Hardened Operational Amplifier from the PowerWise® Family
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Features

Unless otherwise noted, typical values at TA= 25°C, V + = 3.3V

Supply voltage

2.7V to 5.5V

Supply current (per channel)

240 µA

Input offset voltage

1 mV max

Input bias current

0.1 pA

GBW

3.3 MHz

EMIRR at 1.8 GHz

120 dB

Input noise voltage at 1 kHz

12 nV/ Hz

Slew rate

2 V/µs

Output voltage swing

Rail-to-Rail

Output current drive

30 mA

Operating ambient temperature range

−40°C to 125°C

Description

National’s LMV831, LMV832, and LMV834 are CMOS input, low power op amp IC's, providing a low input bias current, a wide temperature range of −40°C to 125°C and exceptional performance making them robust general purpose parts. Additionally, the LMV831/LMV832/LMV834 are EMI hardened to minimize any interference so they are ideal for EMI sensitive applications.

The unity gain stable LMV831/LMV832/LMV834 feature 3.3 MHz of bandwidth while consuming only 0.24 mA of current per channel. These parts also maintain stability for capacitive loads as large as 200 pF. The LMV831/LMV832/LMV834 provide superior performance and economy in terms of power and space usage.

This family of parts has a maximum input offset voltage of 1 mV, a rail-to-rail output stage and an input common-mode voltage range that includes ground. Over an operating range from 2.7V to 5.5V the LMV831/LMV832/LMV834 provide a PSRR of 93 dB, and a CMRR of 91 dB. The LMV831 is offered in the space saving 5-Pin SC70 package, the LMV832 in the 8-Pin MSOP and the LMV834 is offered in the 14-Pin TSSOP package.


Applications

  • Photodiode preamp
  • Piezoelectric sensors
  • Portable/battery-powered electronic equipment
  • Filters/buffers
  • PDAs/phone accessories


  • Typical Application

     

    ParametersValues
    Supply Min 2.7 Volt
    Supply Max 5.5 Volt
    Gain Bandwidth 3.3 MHz
    Slew Rate 2 Volts/usec
    Offset Voltage max, 25C 1 mV
    Max Input Bias Current 0.5 nA
    Input OutputType Vcm to V-, R-R Out
    Supply Current Per Channel 0.24 mA
    PowerWise Rating 2 73 uA/MHz
    Channels 4 Channels
    Output Current 30 mA
    Shut down No
    Special Features EMI Hardened
    Voltage Noise 12 nV/root(Hz)
    Temperature Max 125 deg C
    Temperature Min -40 deg C
    Function Op Amp
    PowerWise Yes

    Datasheets
    TitleSizeDateOther
    Language
    LMV834 Quad 3.3 MHz Low Power CMOS, EMI Hardened Operational Amplifier1060
    Kbytes
    6-Oct-08日本語  


    Application Notes
    TitleSizeDateOther
    Language
    AN-1867: Application Note 1867 EMIRR Evaluation Boards for LMV831/LMV832/LMV834556
    Kbytes
    5-Oct-08 


    Other Technical Documents
    TitleTypeDate
    Board Layout Guidelines and the Mistake of Single-Point GroundingExternal Article 2009-02-19

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMV834MT/NOPB


    RoHS Status


    TSSOP
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide335
    FARNELLEurope and Asia251
    MOUSERWorldwide358
    NEWARKAmericas40
    $0.95 each at 1K+ pcsrail
    of
    94
    LMV834MTX/NOPB


    RoHS Status


    TSSOP
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    RSL MICROAsia Pacific5000
    $0.95 each at 1K+ pcsreel
    of
    2500

    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 LMV834.

    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 LMV834 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMV834MTEVAL
    Evaluation Board for the LMV834 3.3MHz EMI Hardened Operation Amplifier.Full production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    FARNELLEurope and Asia4
    NEWARKAmericas4
    $64.70 each1

    Description:

    Nationals LMV834 is a CMOS input, low power op amp IC, providing a low input bias current, a wide temperature range of -40°C to +125°C and exceptional performance, making this IC a robust general purpose part. To demonstrate the EMI robustness of the LMV834 and to be able to measure the parameter EMIRR, an evaluation board has been developed. A description of the evaluation board and how to perform EMIRR measurements can be found in Application Note AN-1867. Focus of AN-1867 is on one of the input pins as those are the most sensitive to EMI. Based on symmetry considerations, it can be expected that both inputs have the same EMIRR. For simplicity of the required schematic only the measurement of pin IN+ is selected. For information about EMI and EMIRR on other pins of the device refer to the detailed description found in Application Note AN-1698.

    Contents:




    National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

    Lead Free product status is available through the search tool located here

    Part Number(s)
    (NSID)
    Weight
    (milligrams)
    TypePinsMSL RatingPeak ReflowRoHS
    Status
    CAD SymbolsModelsPackage
    Marking
    Format
    LMV834MT/NOPB

    53.783
    TSSOP141260DetailDownloadspice file
    NSUZXYTT
    LMV834
    MT
    LMV834MTX/NOPB

    53.783
    TSSOP141260DetailDownloadspice file
    NSUZXYTT
    LMV834
    MT

    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 LMV834.

    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 LMV834 is located at RoHS Status.

    CAD Symbols and Models
    Download LMV834 CAD Symbols
     Models
    spice file


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LMV834MTCMOS70213010015840003449464325
    LMV834MTXCMOS70213010015840003449464325

    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 LMV834.

    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 LMV834 is located at RoHS Status.

    EMI-Hardened Op Amp Demo
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    Precision Design Techniques: Amp Noise Design Considerations
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    EMI & RFI in Op Amp Design
    Click image to play video in new window


    EMI-Hardened Op Amp Demo
    Date: 2010-04-14
    Length: 0:2:06
    Precision Design Techniques: Amp Noise Design Considerations
    Date: 2011-01-20
    Length: 00:31:00
    EMI & RFI in Op Amp Design
    Date: 2008-12-15
    Length: 0:18:34
    [Information as of 9-Feb-2012]