# 寫入直接數位合成 (DDS) 的最大速度

**URL:** <https://forum.digikey.com/t/dds/54008>\
**Category:** 常見問題\
**Tags:** faqs, analog-devices\
**Created:** [April 25, 2025, 2:48am UTC](https://forum.digikey.com/t/dds/54008 "2025-04-25T02:48:42Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Angus\_Lai](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/angus_lai/32/9895_2.png) [@Angus\_Lai](https://forum.digikey.com/u/Angus_Lai)\
**Post date:** [April 25, 2025, 2:48am UTC](https://forum.digikey.com/t/dds/54008/1 "2025-04-25T02:48:42Z")

</div>

設備的規格書中給出了特定設備的最大寫入速度。

我們以 [ADI](https://www.digikey.tw/zh/supplier-centers/analog-devices) 的 [AD985 DDS](https://www.digikey.tw/zh/products/filter/interface/direct-digital-synthesis-dds/723?s=N4IgjCBcpgnAHLKoDGUBmBDANgZwKYA0IA9lANogAMIAugL7EC0E0IakWeRpFIArFX4hiYAOzCGjEACY%20AEQCWAJ3woALgAIlAc0XqcmgMoBPAHbqAFvlyLcIkJgAmCSfSA) 產品為例：

[AD9852](https://www.digikey.tw/zh/products/filter/%E4%BB%8B%E9%9D%A2/%E7%9B%B4%E6%8E%A5%E6%95%B8%E4%BD%8D%E5%90%88%E6%88%90-dds/723?s=N4IgTCBcDaIIIBECcAOArGABCAugXyA) / [AD9854](https://www.digikey.tw/zh/products/filter/%E4%BB%8B%E9%9D%A2/%E7%9B%B4%E6%8E%A5%E6%95%B8%E4%BD%8D%E5%90%88%E6%88%90-dds/723?s=N4IgTCBcDaIIIBECcAOArAFgAQgLoF8g) / [AD9858](https://www.digikey.tw/zh/products/filter/%E4%BB%8B%E9%9D%A2/%E7%9B%B4%E6%8E%A5%E6%95%B8%E4%BD%8D%E5%90%88%E6%88%90-dds/723?s=N4IgTCBcDaIIIBECcAOArCgBCAugXyA) 的平行埠可高達約 **100MHz** （位元組速率）讀取數據，而串列埠（SPI）的工作速度高達 **10Mbits/s** 。

 ![image](https://global.discourse-cdn.com/digikey/original/3X/0/2/029da253b1ea748c0be76f5fa40a520a4278ec68.jpeg)

[AD9951](https://www.digikey.tw/zh/products/filter/%E4%BB%8B%E9%9D%A2/%E7%9B%B4%E6%8E%A5%E6%95%B8%E4%BD%8D%E5%90%88%E6%88%90-dds/723?s=N4IgTCBcDaIIIBECcSCsBGABCAugXyA) / [AD9952](https://www.digikey.tw/zh/products/filter/%E4%BB%8B%E9%9D%A2/%E7%9B%B4%E6%8E%A5%E6%95%B8%E4%BD%8D%E5%90%88%E6%88%90-dds/723?s=N4IgTCBcDaIIIBECcSCsYAEIC6BfIA) / [AD9953](https://www.digikey.tw/zh/products/filter/%E4%BB%8B%E9%9D%A2/%E7%9B%B4%E6%8E%A5%E6%95%B8%E4%BD%8D%E5%90%88%E6%88%90-dds/723?s=N4IgTCBcDaIIIBECcSCsBmABCAugXyA) / [AD9954](https://www.digikey.tw/zh/products/filter/%E7%9B%B4%E6%8E%A5%E6%95%B8%E4%BD%8D%E5%90%88%E6%88%90-dds/723?s=N4IgTCBcDaIIIBECcSCsAWABCAugXyA) 和 [AD9859](https://www.digikey.tw/zh/products/filter/%E7%9B%B4%E6%8E%A5%E6%95%B8%E4%BD%8D%E5%90%88%E6%88%90-dds/723?s=N4IgTCBcDaIIIBECcAOArEgBCAugXyA) 只有一個串列 I/O 埠。但是，該連接埠可以以 **25Mbits/s** 的速率進行寫入。

 ![image](https://global.discourse-cdn.com/digikey/original/3X/3/8/380b0a09070aa73f22c580b1e7e4975b48f93dc1.jpeg)

> **適用的零件編號**
>
> AD9852ASTZ AD9852ASVZ AD9854ASTZ AD9854ASVZ AD9858BSVZ  
> AD9852ASTZ-ND AD9852ASVZ-ND AD9854ASTZ-ND AD9854ASVZ-ND AD9858BSVZ-ND
> 
> AD9951YSVZ AD9952YSVZ AD9952YSVZ-REEL7 AD9953YSVZ AD9953YSVZ-REEL7 AD9954YSVZ AD9954YSVZ-REEL7 AD9859YSVZ-REEL7 AD9859YSVZ
> 
> AD9951YSVZ-ND AD9952YSVZ-ND AD9952YSVZ-REEL7TR-ND AD9952YSVZ-REEL7CT-ND AD9952YSVZ-REEL7DKR-ND AD9953YSVZ-ND AD9953YSVZ-REEL7TR-ND AD9954YSVZ-ND AD9954YSVZ-REEL7TR-ND AD9954YSVZ-REEL7CT-ND AD9954YSVZ-REEL7DKR-ND AD9859YSVZ-REEL7TR-ND AD9859YSVZ-REEL7CT-ND AD9859YSVZ-REEL7DKR-ND AD9859YSVZ-ND

了解有關直接數位合成 (DDS) 的更多資訊：  
[直接數位合成基礎知識](https://www.digikey.tw/zh/articles/techzone/2013/oct/basics-of-direct-digital-synthesis?_gl=1*5x4ovd*_gcl_au*MTM1NzA1NzI5Mi4xNzQzOTg5NjU2)

直接數位合成 (DDS) 教學系列：  
[1/7 簡介](https://www.digikey.tw/zh/ptm/a/analog-devices/direct-digital-synthesis-tutorial-series-1-of-7-introduction?_gl=1*ujg79*_gcl_au*MTM1NzA1NzI5Mi4xNzQzOTg5NjU2)  
[2/7 累加器](https://www.digikey.tw/zh/ptm/a/analog-devices/direct-digital-synthesis-tutorial-series-2-of-7-the-accumulator?_gl=1*ujg79*_gcl_au*MTM1NzA1NzI5Mi4xNzQzOTg5NjU2)  
[3/7 角度到振幅轉換器](https://www.digikey.tw/zh/ptm/a/analog-devices/direct-digital-synthesis-tutorial-series-3-of-7-angle-to-amplitude-converter?_gl=1*ujg79*_gcl_au*MTM1NzA1NzI5Mi4xNzQzOTg5NjU2)  
[4/7 數位類比轉換器](https://www.digikey.tw/zh/ptm/a/analog-devices/direct-digital-synthesis-tutorial-series-4-of-7-digitaltoanalog-converter?_gl=1*ujg79*_gcl_au*MTM1NzA1NzI5Mi4xNzQzOTg5NjU2)  
[5/7 數模重建濾波器](https://www.digikey.tw/zh/ptm/a/analog-devices/direct-digital-synthesis-tutorial-series-5-of-7-digitaltoanalog-reconstruction-filter?_gl=1*ujg79*_gcl_au*MTM1NzA1NzI5Mi4xNzQzOTg5NjU2)  
[6/7 SINC 包絡校正](https://www.digikey.tw/zh/ptm/a/analog-devices/direct-digital-synthesis-tutorial-series-6-of-7-sinc-envelope-correction?_gl=1*13jmzaf*_gcl_au*MTM1NzA1NzI5Mi4xNzQzOTg5NjU2)  
[7/7 DDS 的實際應用](https://www.digikey.tw/zh/ptm/a/analog-devices/direct-digital-synthesis-tutorial-series-7-of-7-dds-in-action?_gl=1*13jmzaf*_gcl_au*MTM1NzA1NzI5Mi4xNzQzOTg5NjU2)