Burr-BrownAudio

PCM2903C

www.ti.com

SBFS038 – JUNE 2012

Stereo Audio Codec with USB Interface,

Single-Ended Analog Input/Output, and S/PDIF

Check for Samples: PCM2903C

1

FEATURES

•

Stereo DAC:

–

234

•

On-Chip USB Interface:

–

With Full-Speed Transceivers

–

THD+N = 0.005%

–

Fully Compliant with USB 2.0 Specification

–

SNR = 96 dB

–

Certified by USB-IF

–

Dynamic Range = 93 dB

–

USB Adaptive Mode for Playback

–

Oversampling Digital Filter:

–

USB Asynchronous Mode for Record

–

Passband Ripple = ±0.1 dB

–

Self-Powered

–

Stop-Band Attenuation = –43 dB

•

16-Bit Delta-Sigma ADC and DAC

–

Single-Ended Voltage Output

•

Sampling Rates:

–

Analog LPF Included

–

DAC: 32, 44.1, 48 kHz

•

Multifunctions:

–

ADC: 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz

–

Human Interface Device (HID) Function:

•

On-Chip Clock Generator With Single 12-MHz

–

Volume and and Mute Controls

Clock Source

–

Suspend Flag Function

•

S/PDIF Input/Output

•

28-Pin SSOP Package

•

Single Power Supply:

–

3.3 V Typical

APPLICATIONS

•

Stereo ADC:

•

USB Audio Speaker

–

•

USB Headset

•

USB Monitor

–

THD+N = 0.01%

•

USB Audio Interface Box

–

SNR = 89 dB

–

Dynamic Range = 89 dB

DESCRIPTION

–

Decimation Digital Filter:

The PCM2903C is Texas Instruments' single-chip,

–

Passband Ripple = ±0.05 dB

USB, stereo audio codec with a USB-compliant full-

speed protocol controller and S/PDIF. The USB

–

Stop-Band Attenuation = –65 dB

protocol controller requires no software code. The

–

Single-Ended Voltage Input

PCM2903C

employs

SpAct™

architecture,

TI's

–

Antialiasing Filter Included

unique system that recovers the audio clock from

–

Digital HPF Included

USB packet data. On-chip analog PLLs with SpAct

enable playback and record with low clock jitter, as

well as independent playback and record sampling

rates.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

SpAct is a trademark of Texas Instruments.

3

System Two, Audio Precision are trademarks of Audio Precision, Inc.

4

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.