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LMV1089RLX
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LMV1089RLX

  • Category:Audio amplifier
  • Product Name:Automatic calibration function microphone amplifier
  • Manufacturers:NSC
  • Production Batch Number:10+
  • Encapsulation:MICRO SMDXT
  • Stock Status:There is stock
  • Stock Quantity:10000
  • Minimum order quantity: 1
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  • Product introduction

peculiarity

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

illustrate

The LMV1089 is a fully analog dual differential input, differential output, microphone array amplifier designed to reduce background noise while providing superior speech intelligibility for voice communication applications.

The microphone inside the LMV1089 retains the 4cm near-field voice signal while rejecting the far-field noise of larger microphones with more than 50cm. Far-field rejection of up to 20 dB is possible in a properly configured and calibrated system.

Part of PowerWise's™ family of energy-efficient solutions, the LMV1089 consumes only 1.1 mA of supply current to provide DSP consumption greater than ten times the superior performance of power solutions.

A period that includes the LMV1089 product manufacturing test process to quickly calibrate and compensate the entire microphone system. This calibration compensates for microphone gain and frequency response, as well as acoustic path differences that do not match. The LMV1089 stores calibration coefficients for the on-chip EEPROM. The calibration was initiated by me 2 C command or control pin by logic.

The dual microphone inputs and processed signals are differential outputs to provide excellent immunity to interference. The microphone is biased and its internal low-noise bias power supply.

Main specifications

Far-field noise suppression (electrical), (at F = 1kHz) 37 dB
Supply voltage 2.7V to 5.5V
Supply current 1.1 mA (typical)
Standby current 0.7μA (typical)
Signal-to-noise ratio (A-weighted) 65 dB (typical)
Total harmonic distortion + noise 0.1% (typical)
PSRR (at 217Hz) 96 dB (typical)


apply

  • Headset and microphone arm
  • Mobile phones and two-way radio communication equipment
  • Bluetooth headset and other power supply
  • The sound of a handheld microphone
  • Balanced stereo microphone preamp

andLMV1089RLXRelated ICs are:


Model Manufacturers lot number encapsulation illustrate
LMV1089RLX NSC 10+ MICRO SMDXT Automatic calibration function microphone amplifier

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