Beijing Kt Micro, Ltd.

Rongrong Bai

Jianting Wang

Wenjing Wang

Jing Cao

Rui Wang

Zhen Li

Pei Yang

Bo Tang

Haiqing Lin

Yan Qi

Dianyu Chen

Yihai Xiang

Zhongzhi Liu

Xiuli Feng

Duanduan Jian

Yaoli Jiang

Shizhu Chen

A processing chip for a digital microphone and related input circuit and a digital microphone are described herein. In one aspect, the input circuit for a processing chip of a digital microphone includes: a PMOS transistor, a resistor, a current source, and a low-pass filter. The described processing chip possesses high anti high-frequency interference capabilities and the described input circuit possesses high high-frequency power supply rejection ratio.

Processing chip for a digital microphone and related input circuit and a digital microphone

A power supply device, a processing chip for a digital microphone and related digital microphone are described herein. In one aspect, a power supply device includes: at least two cascaded low-dropout linear regulators. In another aspect, a processing chip for digital microphone includes a processing module and a power supply module, wherein the power supply modules includes at least two cascaded low dropout linear regulators. In another aspect, a digital microphone includes a microphone and a processing chip, wherein the processing chip includes a processing module and a power supply module, wherein the power module includes at least two cascaded low-dropout linear regulators. Embodiments described herein provide a power supply device with higher PSRR.

Power supply device, a processing chip for a digital microphone and related digital microphone

A method and device for generating an adjustable signal includes a voltage generator configured to continuously adjust an output voltage and output the voltage, a &#x3a3;&#x394; modulator configured to output a digital signal of pre-determined-cycle based on the output voltage and a reference voltage, a counter configured to count the number of a target level in the digital signal of a pre-determined number of cycles, and a digital signal generator configured to generate a target signal based on the number of the target level. The method and device may improve the accuracy of the generated signal while remaining the same feel of continuous adjustment.

Generating an adjustable signal

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Beijing, China

Rongrong Bai