WM8955中文资料STEREO DAC FOR PORTABLE AUDIO APPLICATIONS数据手册CirrusLogic规格书

描述 Description

DESCRIPTION
The WM8955L is a low power, high qualitystereo DAC with integrated headphone and loudspeaker amplifiers, designed to reduce external component requirements in portable digital audio applications.FEATURES
• DAC SNR 98dB, THD -95dB (‘A’ weighted @ 48kHz, 3.3V)
• On-chip 400mW BTL Speaker Driver (mono)
• On-chip Headphone Driver
  ° 40mW output power on 16Ω/3.3V
  ° THD –80dB at 20mW, SNR 90dB with 16Ωload
• Stereo and Mono Line-in mix into DAC output
• SeparatelyMixed Stereo and Mono Outputs
• Digital Tone Control and Bass Boost
• Low Power
  ° Down to 7mW for stereo playback (1.8V / 1.5V supplies)
  ° 10µW StandbyMode
• Low SupplyVoltages
  ° Analogue 1.8V to 3.6V
  ° Digital core: 1.42V to 3.6V
  ° Digital I/O: 1.42V to 3.6V
• Master clocks supported: GSM, CDMA, PDC, USB or standard audio clocks
• Audio sample rates supported: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96kHz
• 32-pin QFN package, 5x5x0.9mm size, 0.5mm lead pitchAPPLICATIONS
• Smartphone / Multimedia Phone
• Digital Audio Player

特性 Features

• DAC SNR 98dB, THD -95dB (‘A’ weighted @ 48kHz, 3.3V)
• On-chip 400mW BTL Speaker Driver (mono)
• On-chip Headphone Driver
  ° 40mW output power on 16Ω/3.3V
  ° THD –80dB at 20mW, SNR 90dB with 16Ωload
• Stereo and Mono Line-in mix into DAC output
• SeparatelyMixed Stereo and Mono Outputs
• Digital Tone Control and Bass Boost
• Low Power
  ° Down to 7mW for stereo playback (1.8V / 1.5V supplies)
  ° 10µW StandbyMode
• Low SupplyVoltages
  ° Analogue 1.8V to 3.6V
  ° Digital core: 1.42V to 3.6V
  ° Digital I/O: 1.42V to 3.6V
• Master clocks supported: GSM, CDMA, PDC, USB or standard audio clocks
• Audio sample rates supported: 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48, 88.2, 96kHz
• 32-pin QFN package, 5x5x0.9mm size, 0.5mm lead pitch

简介

WM8955属于集成电路（IC）的ADC/DAC-特殊用途。由制造生产的WM8955ADC/DAC - 特殊用途该产品族中的产品可用于模拟和数字表示的信息转换，适用于特定用例，或集成了通用数据转换器中不常见的其他功能。例如针对超声或汽车雷达应用集成了低噪声放大器和可变增益级的器件、注重音频和视频的产品、在段码式显示器上集成显示测量值功能的器件、集成输入输出电气隔离的器件等。