PCM2904_09 Datasheet, PDF (1/33 Pages) Texas Instruments – SINGLE-ENDED ANALOG INPUT/OUTPUT AND S/PDIF

BurrĆBrown Products
from Texas Instruments
PCM2904
PCM2906
SLES042C – JUNE 2002 – REVISED NOVEMBER 2007
STEREO AUDIO CODEC WITH USB INTERFACE, SINGLE-ENDED ANALOG
INPUT/OUTPUT AND S/PDIF
FEATURES
1
•23 PCM2904: Without S/PDIF
• PCM2906: With S/PDIF
• On-Chip USB Interface:
– With Full-Speed Transceivers
– Fully Compliant With USB 1.1 Specification
– Certified by USB-IF
– Partially Programmable Descriptors ⁽¹⁾
– USB Adaptive Mode for Playback
– USB Asynchronous Mode for Record
– Bus Powered
• 16-Bit Delta-Sigma ADC and DAC
• Sampling Rate:
– DAC: 32, 44.1, 48 kHz
– ADC: 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
• On-Chip Clock Generator With Single 12-MHz
Clock Source
• Single Power Supply: 5 V Typical (V_BUS)
• Stereo ADC
– Analog Performance at V_BUS = 5 V
– THD+N = 0.01%
– SNR = 89 dB
– Dynamic Range = 89 dB
– Decimation Digital Filter
– Pass-Band Ripple = ±0.05 dB
– Stop-Band Attenuation = –65 dB
– Single-Ended Voltage Input
– Antialiasing Filter Included
– Digital LCF Included
• Stereo DAC:
– Analog Performance at V_BUS = 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.
– Pass-Band Ripple = ±0.1 dB
– Stop-Band Attenuation = –43 dB
– Single-Ended Voltage Output
– Analog LPF Included
• Multifunctions:
– Human Interface Device (HID) Volume ±
Control and Mute Control
– Suspend Flag
• Package: 28-Pin SSOP
APPLICATIONS
• USB Audio Speaker
• USB Headset
• USB Monitor
• USB Audio Interface Box
DESCRIPTION
The PCM2904/2906 is Texas Instruments single-chip
USB stereo audio codec with USB-compliant
full-speed protocol controller and S/PDIF (PCM2906
only). The USB protocol controller works with no
software code, but the USB descriptors can be
modified in some areas (for example, vendor
ID/product ID). The PCM2904/2906 employs SpAct™
architecture, TI's unique system that recovers the
audio clock from USB packet data. On-chip analog
PLLs with SpAct enable playback and record with low
clock jitter and with 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.
SpAct is a trademark of Texas Instruments.
2
System Two, Audio Precision are trademarks of Audio Precision, Inc.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2002–2007, Texas Instruments Incorporated