PCM2912集成电路（IC）的编解码器规格书PDF中文资料

PCM2912属于集成电路（IC）的编解码器。由德州仪器制造生产的PCM2912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。

1FEATURES

23· On-Chip USB Interface:

– With Full-Speed Transceivers

– Fully Compliant with USB 2.0 Specification

– Certified By USB-IF

– Partially Programmable Descriptors

– Adaptive Isochronous Transfer for

Playback

– Asynchronous Isochronous Transfer for

Record

– Bus Powered

· 16-Bit Delta-Sigma ADC and DAC

· Sampling Rate:

– 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz

· On-Chip Clock Generator:

– With Single 6-MHz Clock Source

· Mono ADC with Microphone Input

– Analog Performance at V BUS = 5 V:

– THD+N: 0.01%

– SNR: 92 dB

– Dynamic Range: 90 dB

– Decimation Digital Filter

– Pass-Band Ripple: ±0.05 dB

– Stop-Band Attenuation: –65 dB

– Single-Ended Voltage Input

– Antialiasing Filter Included

– Digital HPF Included

– Microphone Bias, Microphone Amplifier,

and Input PGA

· Stereo DAC With Headphone Output

– Analog Performance at VBUS = 5.0 V:

– THD+N: 0.01% (RL > 10 kΩ)

– THD+N: 0.02% (RL = 32 Ω)

– SNR: 92 dB

– Dynamic Range: 90 dB

– PO: 13 mW (RL = 32 Ω)

– PO: 25 mW (RL = 16 Ω)

– Oversampling Digital Filter

– Pass-Band Ripple: ±0.1 dB

– Stop-Band Attenuation: –43 dB

– Single-Ended Voltage Output

– Analog LPF Included

– Sidetone PGA, Output PGA, and HP

Amplifier

· Multifunctions:

– Suspend, Playback, and Record Status Flag

– Microphone Amplifier, Mute, and Gain

Control

· Pop/Click Noise Free

· Single Power Supply: 5 V Typ (VBUS)

· Package: 32-Pin TQFP

APPLICATIONS

· USB Headset

· USB Headphone

· USB Speaker

· USB Featured Consumer Audio Product

· USB Audio Interface Box

· USB Monitor

· Video Conference System

DESCRIPTION

The PCM2912 is the Texas Instruments single-chip,

USB stereo audio CODEC with USB 2.0-compliant

full-speed protocol controller and analog front end (AFE) function for headset application. The USB

protocol controller works with no software code, but

USB descriptors can be modified on request(1). The

PCM2912 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 rate with

low clock jitters.