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-protocolcontroller 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. 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. The PCM2704/5/6/7 employs SpAct architecture, TI's unique system that recovers the audio clock from USB packet data.

View full Description in Datasheet

Features

· On-Chip USB Interface:
o No Need of Dedicated Device Driver
o With Full-Speed Transceivers
o Fully Compliant With USB 1.1 Specification
o Certified by USB-IF
o Partially Programmable Descriptors
o Adaptive Isochronous Transfer for Playback
o 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:
o Bus-Powered: 5 V, Typical (V _BUS )
o Self-Powered: 3.3 V, Typical
· 16-Bit Delta-Sigma Stereo DAC
o Analog Performance at 5 V (Bus-Powered),
3.3 V (Self-Powered): THD+N: 0.006% R _L > 10 k惟, Self-Powered THD+N: 0.025% R _L = 32 惟 SNR = 98 dB Dynamic Range: 98 dB P _O = 12 mW, R _L = 32 惟
o Oversampling Digital Filter Pass-Band Ripple = 卤0.04 dBStop-Band Attenuation = -50 dB
o Single-Ended Voltage Output
o Analog LPF Included
· Multiple Functions:
o Up to Eight Human Interface Device (HID) Interfaces (Depending on Model and Settings)