National Semiconductor | High-performance Analog

 

 LMV1089   
Dual Input, Far Field Noise Suppression Microphone Amplifier with Automatic Calibration Capability from the PowerWise® Family		 Click link to Download

Features

  • Low power consumption
  • Shutdown function
  • No added processing delay
  • Differential inputs and outputs
  • Automatic calibration
  • Adjustable 6 - 48dB gain
  • Excellent RF immunity
  • Space-saving 36–bump micro SMD package

    • Description

    The LMV1089 is a fully analog dual differential input, differential output, microphone array amplifier designed to reduce background acoustic noise, while delivering superb speech clarity in voice communication applications.

    The LMV1089 preserves near-field voice signals within 4cm of the microphones while rejecting far-field acoustic noise greater than 50cm from the microphones. Up to 20dB of far-field rejection is possible in a properly configured and calibrated system.

    Part of the Powerwise™ family of energy efficient solutions, the LMV1089 consumes only 1.1mA of supply current providing superior performance over DSP solutions consuming greater than ten times the power.

    A quick calibration during the manufacturing test process of the product containing the LMV1089 compensates the entire microphone system. This calibration compensates for mismatch in microphone gain and frequency response, as well as acoustical path variances. The LMV1089 stores the calibration coefficients in the on-chip EEPROM. The calibration is initiated by an I 2C command or by a logic pin control.

    The dual microphone inputs and the processed signal output are differential to provide excellent noise immunity. The microphones are biased with an internal low-noise bias supply.

    Key Specification
    ■  Far Field Noise Suppression  (Electrical), (f = 1kHz) 37dB
    ■  Supply Voltage 2.7V to 5.5V
    ■  Supply Current 1.1mA (typ)
    ■  Standby Current 0.7µA (typ)
    ■  Signal-to-Noise Ratio (A-weighted) 65dB (typ)
    ■  Total Harmonic Distortion + Noise 0.1% (typ)
    ■  PSRR (217Hz) 96dB (typ)


    Applications

  • Headset and Boom microphones
  • Mobile handsets and two-way radios
  • Bluetooth and other powered headsets
  • Hand-held voice microphones
  • Equalized stereo microphone preamplifier

    • Also Recommended
    LMV1088▲Single Ended Output
    LMV1090▲Improved Performance


    Typical application page 2

    Parameters / ValuesLMV1089 LMV1088 LMV1090
    FunctionBeamforming Beamforming Beamforming
    UplinkYes Yes Yes
    DownlinkNo No No
    Special FeaturesAuto-calibration Auto-calibration I2C Controlled
    Mono/StereoMono Mono Mono
    Auto CalibrationYes Yes No
    Output TypeDifferential Single-Ended Differential
    Shut downYes No Yes
    FFNRI (electrical)32 dB 32 dB 34 dB
    SNRI (electrical)24 dB 24 dB 26 dB
    Supply Current1.1 mA 1 mA 0.6 mA
    THD0.1 % 0.1 % 0.1 %
    SNR65 dB 60 dB 65 dB
    PSRR96 dB 85 dB 99 dB
    Supply Min2.7 Volt 2.7 Volt 2.7 Volt
    Supply Max5.5 Volt 5.5 Volt 5.5 Volt
    User Supply3.3 Volt 3.3 Volt 3.3 Volt
    Control SchemeI2C, Bit select I2C I2C
    Temperature Min-40 deg C -40 deg C -40 deg C
    Temperature Max85 deg C 85 deg C 85 deg C
    PowerWiseYes Yes Yes
    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMV1089RL/NOPB

    LMV1089RL

    RoHS Status

    MICRO SMDXT    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide316
    MOUSERWorldwide250
    		$1.60 each at 1K+ pcsreel
    of
    250
    LMV1089RLX

    RoHS Status

    MICRO SMDXT    		Full production
    Lead Time: 16 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.60 each at 1K+ pcsreel
    of
    1000
    LMV1089VY/NOPB


    RoHS Status

    LQFP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide250
    AVNET-EMWorldwide204
    DIGI-KEYWorldwide10
    MOUSERWorldwide250
    TAYLORAmericas250
    		$2.40 each at 1K+ pcstray
    of
    250
    LMV1089VYX/NOPB


    RoHS Status

    LQFP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$2.40 each at 1K+ pcsreel
    of
    1000

    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 LMV1089.

    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 LMV1089 is located at RoHS Status.

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMV1089VYBD
    		evaluation boardFull production


     

    Contact your distributor
    		CALLN/A



    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
    LMV1089RL/NOPB

    LMV1089RL
    		13.256
    13.256
    		MICRO SMDXT361
    1    		260
    260    		DetailDownloadN/A
    		XYTT
    I ZA2
    LMV1089RLX
    		13.256
    13.256
    		MICRO SMDXT361260DetailDownloadN/A
    		XYTT
    I ZA2
    LMV1089VY/NOPB

    		181.501
    		LQFP323260DetailDownloadN/A
    		NSUZXYTT
    LMV1089
    VY
    LMV1089VYX/NOPB

    		181.501
    		LQFP323260DetailDownloadN/A
    		NSUZXYTT
    LMV1089
    VY

    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 LMV1089.

    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 LMV1089 is located at RoHS Status.

    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LMV1089RLCMOS70213010015840003449464325
    LMV1089RLXCMOS70213010015840003449464325
    LMV1089VYCMOS70213010015840003449464325
    LMV1089VYXCMOS70213010015840003449464325

    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 LMV1089.

    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 LMV1089 is located at RoHS Status.

    LMV108x/LMV109x Analog Noise-Suppression Technology
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    Audio Solutions for Portable Devices
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    LMV108x/LMV109x Analog Noise-Suppression Technology
    Date: 2008-04-24
    Length: 0:1:59
    Audio Solutions for Portable Devices
    Date: 2009-03-02
    Length: 00:50:38
    [Information as of 9-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation