Product details

Operating temperature range (°C) -40 to 85 Rating Catalog
Operating temperature range (°C) -40 to 85 Rating Catalog
LQFP (NEY) 32 81 mm² 9 x 9

  • 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

  • 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

  • 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 Specifications

    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)

    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 Specifications

    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)

    Download View video with transcript Video

    Technical documentation

    star =Top documentation for this product selected by TI
    No results found. Please clear your search and try again.
    View all 2
    Type Title Date
    * Data sheet Dual Input, Far Field Noise Suppression Microphone Amp w/ Auto Calibration datasheet (Rev. H) 19 May 2010
    EVM User's guide LMV1089 Noise Supp Microphne Amp Demo Brd UG (Rev. B) 01 May 2013

    Design & development

    For additional terms or required resources, click any title below to view the detail page where available.

    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 (...)
    Package Pins Download
    LQFP (NEY) 32 View options

    Ordering & quality

    Information included:
    • RoHS
    • REACH
    • Device marking
    • Lead finish/Ball material
    • MSL rating/Peak reflow
    • MTBF/FIT estimates
    • Material content
    • Qualification summary
    • Ongoing reliability monitoring
    Information included:
    • Fab location
    • Assembly location

    Support & training

    TI E2E™ forums with technical support from TI engineers

    Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

    If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

    Videos