PCM2903B Datasheet, PDF (1/31 Pages) Texas Instruments – STEREO AUDIO CODEC WITH USB INTERFACE, SINGLE-ENDED ANALOG INPUT/OUTPUT, AND S/PDIF

PCM2903B
Burr-Brown Audio
www.ti.com ........................................................................................................................................................................................... SLES228 – DECEMBER 2008
STEREO AUDIO CODEC WITH USB INTERFACE,
SINGLE-ENDED ANALOG INPUT/OUTPUT, AND S/PDIF
FEATURES
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•234 On-Chip USB Interface:
– With Full-Speed Transceivers
– Fully Compliant with USB 2.0 Specification
– Certified by USB-IF
– Partially Programmable Descriptors ⁽¹⁾
– USB Adaptive Mode for Playback
– USB Asynchronous Mode for Record
– Self-Powered
• 16-Bit Delta-Sigma ADC and DAC
• Sampling Rates:
– 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
• S/PDIF Input/Output
• Single Power Supply:
– 3.3 V Typical
• Stereo ADC:
– Analog Performance at V_CCC = V_CCP1 = V_CCP2
= V_CCX = V_DD = 3.3 V:
– THD+N = 0.01%
– SNR = 89 dB
– Dynamic Range = 89 dB
– Decimation Digital Filter:
– Passband Ripple = ±0.05 dB
– Stop-Band Attenuation = –65 dB
– Single-Ended Voltage Input
– Antialiasing Filter Included
– Digital HPF Included
(1) The descriptor can be modified by changing a mask.
• Stereo DAC:
– Analog Performance at V_CCC = V_CCP1 = V_CCP2
= V_CCX = V_DD = 3.3 V:
– THD+N = 0.005%
– SNR = 96 dB
– Dynamic Range = 93 dB
– Oversampling Digital Filter:
– Passband Ripple = ±0.1 dB
– Stop-Band Attenuation = –43 dB
– Single-Ended Voltage Output
– Analog LPF Included
• Multifunctions:
– Human Interface Device (HID) Function:
– Volume and and Mute Controls
– Suspend Flag Function
• 28-Pin SSOP Package
APPLICATIONS
• USB Audio Speaker
• USB Headset
• USB Monitor
• USB Audio Interface Box
DESCRIPTION
The PCM2903B is Texas Instruments' single-chip,
USB, stereo audio codec with a USB-compliant
full-speed protocol controller and S/PDIF. The USB
protocol controller requires no software code, but the
USB descriptors can be modified in some areas (for
example, vendor ID and/or product ID). The
PCM2903B 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 as
well as independent playback and record sampling
rates.
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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.
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System Two, Audio Precision are trademarks of Audio Precision, Inc.
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All other trademarks are the property of their respective owners.
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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 © 2008, Texas Instruments Incorporated