PCM2900_17 Datasheet, PDF (1/37 Pages) Texas Instruments – STEREO AUDIO CODEC WITH USB INTERFACE, SINGLE-ENDED ANALOG INPUT/OUTPUT AND S/PDIF

Not Recommended for New Designs
BurrĆBrown Products
from Texas Instruments
PCM2900
PCM2902
SLES035E – MARCH 2007 – REVISED MARCH 2008
STEREO AUDIO CODEC WITH USB INTERFACE,
SINGLE-ENDED ANALOG INPUT/OUTPUT AND S/PDIF
FEATURES
1
•234 PCM2900: Without S/PDIF
• PCM2902: 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 PCM2900/2902 is Texas Instruments' single-chip
USB stereo audio codec with USB-compliant
full-speed protocol controller and S/PDIF (only
PCM2902). The USB protocol controller works with
no software code, but the USB descriptors can be
modified in some areas (e.g., vendor ID/product ID).
The PCM2900/2902 employs SpAct™ architecture,
TI's unique system that recovers the audio clock from
USB packet data. On-chip analog PLLs with SpAct
architecture 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
All other trademarks are the property of their respective owners.
4
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 © 2007–2008, Texas Instruments Incorporated