- 制造厂商：TI
- 产品类别：音频
- 技术类目：音频转换器 - 音频 DAC
- 功能描述：具有线性输出和 S/PDIF 输出、总线供电/自加电的 98dB SNR 立体声 USB2.0 FS DAC
- 点击这里打开及下载PCM2705的技术文档资料
- TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格
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.
- 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
- 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:
- 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
PCM2705的完整型号有：PCM2705DB、PCM2705DBR，以下是这些产品的关键参数及官网采购报价：
PCM2705DB，工作温度：-25 to 85，封装：SSOP (DB)-28，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网PCM2705DB的批量USD价格：4.466（1000+）
PCM2705DBR，工作温度：-25 to 85，封装：SSOP (DB)-28，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网PCM2705DBR的批量USD价格：3.752（1000+）
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