PCM2705C
- On-Chip USB Interface:
- No Dedicated Device Driver Needed
- Full-Speed Transceivers
- Fully Compliant With USB 2.0 Specification
- USB 1.1 Descriptors With USB Audio
Class Support
- USB 1.1 Descriptors With USB Audio
- Certified by USB-IF
- Partially Programmable Descriptors
- Adaptive Isochronous Transfer for Playback
- Bus-Powered or Self-Powered Operation
- Sampling Rates: 32 kHz, 44.1 kHz, and 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
- THD + N: 0.006% RL > 10 kΩ, Self-
- Oversampling Digital Filter
- Passband Ripple = ±0.04 dB
- Stop-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 (Model and Setting Dependent) - Suspend Flag
- S/PDIF Out With SCMS
- External ROM Interface (PCM2704C/6C)
- Serial Programming Interface (PCM2705C/7C)
- I2S Interface (Selectable on PCM2706C/7C)
- Up to Eight Human Interface Device (HID)
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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | PCM270xC Stereo Audio DAC With USB Interface, Single-Ended Headphone Output and S/PDIF Output 数据表 (Rev. B) | PDF | HTML | 2015-8-25 | ||
| 应用手册 | Differences between PCM270x and PCM270xC | 2011-8-16 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
PCM2705EVM-U — PCM2705 评估模块
PCM2704EVM-U 和 PCM2705EVM-U 是 PCM2704/5 USB 音频编解码器的评估模块。
该 EVM 由 Windows® XP、Windows® Vista、Windows® 7、OSX 以及同 USB 类音频器件兼容的大多数操作系统提供支持。
PCM2704EVM-U 及 PCM2705EVM-U 连接到 PC 的 USB 端口。USB 接口为 EVM 提供电源、控制及流式音频数据。
TIDA-00089 — 适用于立体声或 2.1 应用的超值条形音箱参考设计套件
这是一个适合立体声或 2.1 应用的超值条形音箱参考设计套件，可轻松重复应用于 PC 扬声器或 MP3 接口盒。这是一套完整的参考设计，其中包含所有必要的编程硬件，因此可在几分钟之内上手，几小时之内完成原型设计，平均只要 8 周就能投入生产。
与当今市场上的分立式解决方案相比，创建超值条形音箱参考设计套件的成本可以减少 30%。这种设计拥有大量填充选项，允许开发者轻松定制产品，无需重新设计 PCB。其软件包含两部分，第一部分是 MSP430 代码（完全开源），还有一个用于 Purepath Studio 家庭音频版本的代码文件。
TI 同时集成了用于 MSP430 的编程器和用于 PCM3070 (...)
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SSOP (DB) | 28 | Ultra Librarian |
订购和质量
推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。