PCM2706
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 SpAct™ architecture, TI's unique system that recovers the audio clock from USB packet data.
Key Features
- 2345 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 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 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) - Serial Programming Interface (PCM2705/7) - I2S Interface (Selectable on PCM2706/7)
- Package: - 28-Pin SSOP (PCM2704/5) - 32-Pin TQFP (PCM2706/7)
