Analog Preamplifier for Silicon Microphone With Sensitivity Calibration The EMT6910 is a high performance Microphone Pre-Amplifier with programmable gain.The preamplifier can be one time calibrated to
Analog Preamplifier for Silicon Microphone With Sensitivity Calibration The EMT6910 is a high performance Microphone Pre-Amplifier with programmable gain.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. Its high PSRR of 90 dB at 217 Hz makes it amenable to integration into wireless systems. The onchip charge-pump generates a low noise and high PSRR bias for the microphone Small die size 0.5mm. x 0.7mm。
Preamp IC for microphone
Programmable Gain: -x dB~10dB(negative gain depends on MEMS system)
Low Distortion Analog output : 0.3% (600mVpp output)
Ultra High SNR
Input supply range of 1.5-3.3V
PSRR of 90dB at 217Hz for 0 dB gain
Low Power solution
Programmable Charge Pump to bias wide range kinds of MEMS microphone sensor
One time gain calibration supported by on chip calibration logic and OTP Gain error < ± 1.0 dB post calibration
Supports on the fly gain change for the preamplifier All External pads are 2KV HBM ESD compatible
RF noise suppression enhanced design
APPLICATION
MEMS microphone preamplifier professional integrated circuit (mobile phone、TWS headset、TV、 car、computer、smart tablet、smart bracelet etc.)
