The EMT6913 is a high performance Microphone Pre-Amplifier with programmable gain. Features an exceptionally high power supply rejection ratio and industry-leading resistance to radio frequency interference. The preamplifier can be one time calibrated to take care of sensor sensitivity variation and thus has a very low gain error. The amplifier has very low output noise and very low distortion. The onchip charge-pump generates a low noise and high PSRR bias for the microphone. Small die size 0.53mm x 0.47mm.

Preamp IC for MEMS microphone

Ultra High SNR

PSRR of 79dB at 217Hz for 0 dB gain

High RF noise suppression 

One time gain calibration supported by on chip calibration logic and OTP Gain error < +/- 1.0 dB post calibration

Low Distortion Analog output : 0.2% (600mVpp output)

Input supply range of 1.5-3.3V

Small size： 0.53 x 0.47mm

Low Power solution

APPLICATION

Pre-amplifier ASIC for MEMS Microphones