PCM2704C中文资料具有线路输出和 S/PDIF 输出、总线供电/自供电的 98dB SNR 立体声全速 DAC（外部 ROM 接口）数据手册TI规格书

描述 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). The PCM270xC also employ SpAct architecture, TI's unique system that recovers the audio clock from USB packet data. On-chip analog phase-locked loops (PLLs) with SpAct enable playback with low clock jitter.

特性 Features

• On-Chip USB Interface:
• Full-Speed Transceivers
• Certified by USB-IF
• Adaptive Isochronous Transfer for Playback
• Sampling Rates: 32 kHz, 44.1 kHz, and 48 kHz
• Single Power Supply:
• Self-Powered: 3.3 V, Typical
• THD + N: 0.025% RL = 32 Ω
• Dynamic Range: 98 dB
• Oversampling Digital Filter
• Stop-Band Attenuation = –50 dB
• Analog LPF Included
• Suspend Flag
• External ROM Interface (PCM2704C/6C)
• I2S Interface (Selectable on PCM2706C/7C)