BurrBrown Products

from Texas Instruments

1

FEATURES

APPLICATIONS

DESCRIPTION

PCM2904

PCM2906

SLES042C – JUNE 2002 – REVISED NOVEMBER 2007

STEREO AUDIO CODEC WITH USB INTERFACE, SINGLE-ENDED ANALOG

INPUT/OUTPUT AND S/PDIF

–

Pass-Band Ripple = ±0.1 dB

23

• PCM2904: Without S/PDIF

–

Stop-Band Attenuation = –43 dB

• PCM2906: With S/PDIF

–

Single-Ended Voltage Output

• On-Chip USB Interface:

–

Analog LPF Included

–

With Full-Speed Transceivers

• Multifunctions:

–

Fully Compliant With USB 1.1 Specification

–

Human Interface Device (HID) Volume ±

Control and Mute Control

–

Certified by USB-IF

–

Suspend Flag

–

Partially Programmable Descriptors (1)

• Package: 28-Pin SSOP

–

USB Adaptive Mode for Playback

–

USB Asynchronous Mode for Record

–

Bus Powered

• USB Audio Speaker

• 16-Bit Delta-Sigma ADC and DAC

• USB Headset

• Sampling Rate:

• USB Monitor

–

DAC: 32, 44.1, 48 kHz

• USB Audio Interface Box

–

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

• On-Chip Clock Generator With Single 12-MHz

Clock Source

The PCM2904/2906 is Texas Instruments single-chip

• Single Power Supply: 5 V Typical (V

BUS)

USB

stereo

audio

codec

with

USB-compliant

full-speed protocol controller and S/PDIF (PCM2906

• Stereo ADC

only). The USB protocol controller works with no

–

Analog Performance at VBUS = 5 V

software code, but the USB descriptors can be

–

THD+N = 0.01%

modified

in

some

areas

(for

example,

vendor

ID/product ID). The PCM2904/2906 employs SpAct™

–

SNR = 89 dB

architecture, TI's unique system that recovers the

–

Dynamic Range = 89 dB

audio clock from USB packet data. On-chip analog

–

Decimation Digital Filter

PLLs with SpAct enable playback and record with low

clock jitter and with independent playback and record

–

Pass-Band Ripple = ±0.05 dB

sampling rates.

–

Stop-Band Attenuation = –65 dB

–

Single-Ended Voltage Input

–

Antialiasing Filter Included

–

Digital LCF Included

• Stereo DAC:

–

Analog Performance at VBUS = 5 V

–

THD+N = 0.005%

–

SNR = 96 dB

–

Dynamic Range = 93 dB

–

Oversampling Digital Filter

(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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2002–2007, 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.