--- 產(chǎn)品詳情 ---
Number of DAC channels (#) | 0 |
Analog inputs | 0 |
Analog outputs | 2 |
DAC SNR (Typ) (dB) | 0 |
Sampling rate (Max) (kHz) | 48 |
Control interface | HID, SPI |
Resolution (Bits) | 16 |
Architecture | USB 1.1 |
- 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
- Analog Performance at 5 V (Bus-Powered),
- 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:
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.
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