描述 Description

The FAN3852 integrates a pre-amplifier, LDO, and ADC that converts Electret Condenser Microphone (ECM) outputs to digital Pulse Density Modulation (PDM) data streams. The pre-amplifier accepts analog signals from the ECM and drives an over-sampled sigma delta Analog-to-Digital Converter (ADC) and outputs PDM data. The PDM digital audio has the advantage of noise rejection and easy interface to mobile handset processors.
The FAN3852 features an integrated LDO and is powered from the system supply rails up to 3.63V, with low power consumption of only 0.85mW and less than 20μW in Power-Down Mode.

特性 Features

? 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

簡介

FAN3852屬于集成電路（IC）的音頻專用。由制造生產(chǎn)的FAN3852音頻專用音頻專用的半導(dǎo)體器件專為音頻信號的濾波、驅(qū)動、放大、轉(zhuǎn)換和接口而設(shè)計。特征包括功能、應(yīng)用、通道數(shù)、接口、電壓和規(guī)格。應(yīng)用包括音頻系統(tǒng)、汽車音頻、消費類音頻、樂器、專業(yè)音頻、通信系統(tǒng)、電信系統(tǒng)、數(shù)字音頻、驅(qū)動器、前置放大器、信號混合、信號處理、語音觸發(fā)器解決方案和 10 Base-T。