PCM2912A中文资料具有 USB 接口、单声道麦克风输入和立体声耳机输出的音频编解码器数据手册TI规格书

描述 Description

The PCM2912A is the Texas Instruments single-chip, USB stereo audio codec with a USB, 2.0-compliant, full-speed protocol controller and an analog front-end (AFE) function for headset applications.
The USB protocol controller works with no software code, but USB descriptors can be modified on request. The PCM2912A employs SpAct™ architecture, TI’s unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enables independent playback and record sampling rates with low clock jitters.

特性 Features

• On-Chip USB Interface:
• Fully Compliant With USB 2.0 Specification
• Partially Programmable Descriptors
• Asynchronous-Isochronous Transfer for Record
• 16-Bit Delta-Sigma ADC and DAC
• On-Chip Clock Generator:
• Mono ADC with Microphone Input
• SNR: 92 dB
• Decimation Digital Filter
• Stop-Band Attenuation: –65 dB
• Antialiasing Filter Included
• Microphone Bias, Microphone Amplifier, and Input PGA
• THD+N: 0.02% (RL = 32 Ω)
• Dynamic Range: 90 dB
• PO: 25 mW (RL = 16 Ω)
• Stop-Band Attenuation: –43 dB
• Analog LPF Included
• Multifunctions:
• Microphone Amplifier, Mute, and Gain Control
• Single Power-Supply: 5 V Typical (VBUS)
• Package: 32-Pin TQFP

简介

PCM2912A属于集成电路（IC）的编解码器。由TI制造生产的PCM2912A编解码器编解码器是用于通过压缩和解压缩来转换数据的半导体器件。数据压缩可提高传输速度并减少存储空间。某些编解码器提供高达 32 位的分辨率，并且分别提供多达 6 个或 8 个模数转换器和数模转换器。除三角积分调制外，还有 I2C、I2S、SPI、串行、HDA、S/DIF、PCM、USB、AC'97 和 SLIMbus 数据接口。