PCM2706C Series
98dB SNR Stereo Full Speed DAC with line-out and S/PDIF output, Bus/Self-powered (I2S)
Manufacturer: Texas Instruments
Catalog
98dB SNR Stereo Full Speed DAC with line-out and S/PDIF output, Bus/Self-powered (I2S)
Key Features
• On-Chip USB Interface:No Dedicated Device Driver NeededFull-Speed TransceiversFully Compliant With USB 2.0 SpecificationUSB 1.1 Descriptors With USB AudioClass SupportCertified by USB-IFPartially Programmable DescriptorsAdaptive Isochronous Transfer for PlaybackBus-Powered or Self-Powered OperationSampling Rates: 32 kHz, 44.1 kHz, and 48 kHzOn-Chip Clock Generator With Single 12-MHzClock SourceSingle Power Supply:Bus-Powered: 5 V, Typical (VBUS)Self-Powered: 3.3 V, Typical16-Bit Delta-Sigma Stereo DACAnalog Performance at 5 V (Bus-Powered),3.3 V (Self-Powered):THD + N: 0.006% RL> 10 kΩ, Self-PoweredTHD + N: 0.025% RL= 32 ΩSNR = 98 dBDynamic Range: 98 dBPO= 12 mW, RL= 32 ΩOversampling Digital FilterPassband Ripple = ±0.04 dBStop-Band Attenuation = –50 dBSingle-Ended Voltage OutputAnalog LPF IncludedMultiple Functions:Up to Eight Human Interface Device (HID)Interfaces (Model and Setting Dependent)Suspend FlagS/PDIF Out With SCMSExternal ROM Interface (PCM2704C/6C)Serial Programming Interface (PCM2705C/7C)I2S Interface (Selectable on PCM2706C/7C)On-Chip USB Interface:No Dedicated Device Driver NeededFull-Speed TransceiversFully Compliant With USB 2.0 SpecificationUSB 1.1 Descriptors With USB AudioClass SupportCertified by USB-IFPartially Programmable DescriptorsAdaptive Isochronous Transfer for PlaybackBus-Powered or Self-Powered OperationSampling Rates: 32 kHz, 44.1 kHz, and 48 kHzOn-Chip Clock Generator With Single 12-MHzClock SourceSingle Power Supply:Bus-Powered: 5 V, Typical (VBUS)Self-Powered: 3.3 V, Typical16-Bit Delta-Sigma Stereo DACAnalog Performance at 5 V (Bus-Powered),3.3 V (Self-Powered):THD + N: 0.006% RL> 10 kΩ, Self-PoweredTHD + N: 0.025% RL= 32 ΩSNR = 98 dBDynamic Range: 98 dBPO= 12 mW, RL= 32 ΩOversampling Digital FilterPassband Ripple = ±0.04 dBStop-Band Attenuation = –50 dBSingle-Ended Voltage OutputAnalog LPF IncludedMultiple Functions:Up to Eight Human Interface Device (HID)Interfaces (Model and Setting Dependent)Suspend FlagS/PDIF Out With SCMSExternal ROM Interface (PCM2704C/6C)Serial Programming Interface (PCM2705C/7C)I2S Interface (Selectable on PCM2706C/7C)
Description
AI
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. 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.
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. 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.
