PCM2704
具有 USB 接口、耳机输出和 S/PDIF 输出的立体声音频 DAC
The /5/6/7 is "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.
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- On-Chip USB Interface:
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- No Need of Dedicated Device Driver
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- With Full-Speed Transceivers
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- Fully Compliant With USB 1.1 Specification
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- Certified by USB-IF
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- Partially Programmable Descriptors
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- Adaptive Isochronous Transfer for Playback
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- Bus-Powered or Self-Powered Operation
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- Sampling Rate: 32, 44.1, 48 kHz
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- On-Chip Clock Generator With Single 12-MHz Clock Source
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- Single Power Supply:
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- Bus-Powered: 5 V, Typical VBUS
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- Self-Powered: 3.3 V, Typical
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- 16-Bit Delta-Sigma Stereo DAC
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- 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
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- Oversampling Digital Filter Pass-Band Ripple = ±0.04 dBStop-Band Attenuation = -50 dB
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- Single-Ended Voltage Output
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- Analog LPF Included
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- Multiple Functions:
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- Up to Eight Human Interface Device HID Interfaces Depending on Model and Settings
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- Suspend Flag
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- S/PDIF Out With SCMS
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- External ROM Interface PCM2704/6
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- Serial Programming Interface PCM2705/7
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- I2S Interface Selectable on PCM2706/7
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- Package: