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Product

Digital PDM Output MEMS Microphone Signal Conditioning Chip

The NSC6360 is a PDM output preamplifier for MEMS digital microphones. The chip integrates a low noise bias circuit for MEMS microphones and a high performance analog pre-amplifier circuit to provide high quality audio signal output and high flexibility for MEMS microphones. The built-in OTP is adjustable for bias and gain, so the NSC6360 supports MEMS microphone sensors with different parameters for better sensitivity consistency. Customers can integrate the chip into the MEMS digital microphone chip for audio signal conditioning. The NSC6360 chip has an extremely low startup and wake time of 20ms, programmable gain bias voltage, and left and right channel polarity. The NSC6360 supports dynamic current adjustment based on the input clock frequency, so it can be used in different power modes. The operating voltage of the chip ranges from 1.6V to 3.6V, and its operating modes include sleep mode, low voltage mode and normal mode.

Product Features

•  Working voltage: 1.62V~3.6V

•  Working mode: sleep mode, low voltage mode, and normal mode

•  Current drain: 300μA @768kHz, 750uA@2.4MHz

•  Equivalent input noise: 4.5μVrms(-107dBV)

•  Gain adjustment (OTP): 9dB~17dBFS with 0.6dB/Step

•  Bias voltage: 7.6V~15.9V with 1.18V/Step

•  Working temperature: -40℃~85℃

Application

•  Laptop

•  Cellphone

•  Smart speaker

Functional Block Diagram

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