Audio ASSP | FAN3852

麦克风预放大器，带数字输出

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概览

FAN3852 集成了预放大器、LDO 和 ADC，会将驻极体电容式麦克风 (ECM) 输出转换为数字脉冲密度调制 (PDM) 数据流。该预放大器从 ECM 接受模拟信号，驱动过采样 sigma delta 模拟-数字转换器 (ADC)，然后输出 PDM 数据。该 PDM 数字音频具有噪声抑制优势，还可以与移动电话听筒处理器进行轻松接口。FAN3852 具有集成式 LDO，从高达 3.63V 的系统电源轨供电，功耗仅为 0.85mW，在电源关闭模式下则不到 20µW。

  • Computing
  • Consumer
  • Electret Condenser Microphones with Digital Output
  • Mobile Handset
  • Headset Accessories
  • Personal Computer (PC)
  • Optimized for Mobile Handset and Notebook PC Microphone Applications
  • Accepts Input from Electret Condenser Microphones (ECM)
  • Pulse Density Modulation (PDM) Output
  • Standard 5-Wire Digital Interface
  • Low Input Capacitance, High PSR, 20 kHz Pre-Amplifier
  • Low-Power 1.5µA Sleep Mode
  • Typical 420µA Supply Current
  • SNR of 62dB(A) for 16dB Gain
  • Total Harmonic Distortion 0.02%
  • Input Clock Frequency Range of 1-4MHz
  • Integrated Low Drop-Out Regulator (LDO)
  • 1.5kV HBM ESD on MIC Input

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Reference Price

FAN3852UC16X

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CAD Model

Pb

A

H

P

WLCSP-6

567TS

1

260

REEL

3000

Y

Digital Audio Interface Receiver

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$0.2293

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