PCM2706| Datasheet

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Burr Brown Products from Texas Instruments

PCM2704, PCM2705, PCM2706, PCM2707
SLES081E JUNE 2003 REVISED NOVEMBER 2007

STEREO AUDIO DAC WITH USB INTERFACE, SINGLE-ENDED HEADPHONE OUTPUT AND S/PDIF OUTPUT
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FEATURES

On-Chip USB Interface: With Full-Speed Transceivers Fully Compliant With USB 1.1 Specification Certified by USB-IF Partially Programmable Descriptors Adaptive Isochronous Transfer for Playback Bus-Powered or Self-Powered Operation Sampling Rate: 32, 44.1, 48 kHz On-Chip Clock Generator With Single 12-MHz Clock Source Single Power Supply: Bus-Powered: 5 V, Typical (VBUS) Self-Powered: 3.3 V, Typical 16-Bit Delta-Sigma Stereo DAC Analog Performance at 5 V (Bus-Powered), 3.3 V (Self-Powered): THD+N: 0.006% RL > 10 k, Self-Powered THD+N: 0.025% RL = 32 SNR = 98 dB Dynamic Range: 98 dB PO = 12 mW, RL = 32 Oversampling Digital Filter Pass-Band Ripple = 0.04 dB Stop-Band Attenuation = 50 dB Single-Ended Voltage Output Analog LPF Included Multiple Functions: Up to Eight Human Interface Device (HID) Interfaces (Depending on Model and Settings) Suspend Flag S/PDIF Out With SCMS External ROM Interface (PCM2704/6)
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Serial Programming Interface (PCM2705/7) I2S Interface (Selectable on PCM2706/7) Package: 28-Pin SSOP (PCM2704/5) 32-Pin TQFP (PCM2706/7)

APPLICATIONS
USB Headphones USB Audio Speaker USB CRT/LCD Monitor USB Audio Interface Box USB-Featured Consumer Audio Product

DESCRIPTION
The PCM2704/5/6/7 is TI's single-chip USB stereo audio DAC with USB-compliant full-speed protocol controller and S/PDIF. The USB-protocol controller works with no software code, but USB descriptors can be modified in some parts (for example, vendor ID/product ID) through the use of an external ROM (PCM2704/6), SPI (PCM2705/7), or on request. (1) The PCM2704/5/6/7 employs SpActTM architecture, TI's unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enable playback with low clock jitter.

(1)

The modification of the USB descriptor through external ROM or SPI must comply with USB-IF guidelines, and the vendor ID must be your own ID as assigned by the USB-IF. The descriptor also can be modified by changing a mask; contact your representative for details.

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. System Two, Audio Precision are trademarks of Audio Precision, Inc.
Copyright 2003 2007, Texas Instruments Incorporated

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.