Burr-BrownAudio

Not Recommended for New Designs

PCM2903B

www.ti.com

SLES228 – DECEMBER 2008

STEREO AUDIO CODEC WITH USB INTERFACE,

SINGLE-ENDED ANALOG INPUT/OUTPUT, AND S/PDIF

Check for Samples: PCM2903B

1

FEATURES

•

Stereo DAC:

–

Analog Performance at VCCC = VCCP1 = VCCP2

234

•

On-Chip USB Interface:

= VCCX = VDD = 3.3 V:

–

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

–

Partially Programmable Descriptors (1)

–

Oversampling Digital Filter:

–

USB Adaptive Mode for Playback

–

Passband Ripple = ±0.1 dB

–

USB Asynchronous Mode for Record

–

Stop-Band Attenuation = –43 dB

–

Self-Powered

–

Single-Ended Voltage Output

•

16-Bit Delta-Sigma ADC and DAC

–

Analog LPF Included

•

Sampling Rates:

•

Multifunctions:

–

DAC: 32, 44.1, 48 kHz

–

Human Interface Device (HID) Function:

–

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

–

Volume and and Mute Controls

•

On-Chip Clock Generator With Single 12-MHz

–

Suspend Flag Function

Clock Source

•

28-Pin SSOP Package

•

S/PDIF Input/Output

•

Single Power Supply:

APPLICATIONS

–

3.3 V Typical

•

USB Audio Speaker

•

Stereo ADC:

•

USB Headset

–

Analog Performance at VCCC = VCCP1 = VCCP2

•

USB Monitor

= VCCX = VDD = 3.3 V:

•

USB Audio Interface Box

–

THD+N = 0.01%

–

SNR = 89 dB

DESCRIPTION

–

Dynamic Range = 89 dB

The PCM2903B is Texas Instruments' single-chip,

–

Decimation Digital Filter:

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

speed protocol controller and S/PDIF. The USB

–

Passband Ripple = ±0.05 dB

protocol controller requires no software code, but the

–

Stop-Band Attenuation = –65 dB

USB descriptors can be modified in some areas (for

–

Single-Ended Voltage Input

example,

vendor

ID

and/or

product

ID).

The

–

Antialiasing Filter Included

PCM2903B

employs

SpAct™

architecture,

TI's

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)

The descriptor can be modified by changing a mask.

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 © 2008, 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.