●The LMV1090 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 LMV1090 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 using ±0.5dB matched microphones.
●Part of the PowerWise family of energy efficient solutions, the LMV1090 consumes only 600μA of supply current providing superior performance over DSP solutions consuming greater than ten times the power.
●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.
● No Loss of Voice Intelligibility
● No Added Processing Delay
● Low Power Consumption
● Differential Outputs
● Excellent RF Immunity
● Adjustable 12 - 54dB Gain
● Shutdown Function
● Space-Saving 16–Bump DSBGA Package
●## Key Specifications
● Far Field Noise Suppression Electrical (FFNSE at f = 1kHz): 34dB (typ)
● SNRIE 26dB (typ)
● Supply Current: 600μA (typ)
● Standby Current 0.1μA (typ)
● Signal-to-Noise Ratio (Voice band): 65dB (typ)
● Total Harmonic Distortion + Noise: 0.1% (typ)
● PSRR (217Hz): 99dB (typ)
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