PCM2705C
Description
The PCM270xC are TI's single-chip USB stereo audio digital-to-analog converters (DACs) with USB 2.0 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 areas (for example, vendor ID/product ID) through the use of an external ROM (PCM2704C and PCM2706C) or serial peripheral interface (SPI) (PCM2705C and PCM2707C).
Key Features
- 1 On-Chip USB Interface: - No Dedicated Device Driver Needed - Full-Speed Transceivers - Fully Compliant With USB 2.0 Specification - USB 1.1 Descriptors With USB Audio Class Support - Certified by USB-IF - Partially Programmable Descriptors - Adaptive Isochronous Transfer for Playback - Bus-Powered or Self-Powered Operation
- Sampling Rates: 32 kHz, 44.1 kHz, and 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 - Passband 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 (Model and Setting Dependent) - Suspend Flag - S/PDIF Out With SCMS - External ROM Interface (PCM2704C/6C) - Serial Programming Interface (PCM2705C/7C) - I2S Interface (Selectable on PCM2706C/7C)
