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. On-chip analog PLLs with SpAct enable playback with low clock jitter.
● On-Chip USB Interface:
● No Need of Dedicated Device Driver
● 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 kΩ, Self-Powered THD+N: 0.025% RL = 32 Ω SNR = 98 dB Dynamic Range: 98 dB PO = 12 mW, RL = 32 Ω
● Oversampling Digital Filter Pass-Band Ripple = ±0.04 dBStop-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)
● Serial Programming Interface (PCM2705/7)
● I2S Interface (Selectable on PCM2706/7)
● Package:
