北京生物醫(yī)學(xué)工程

基于DE2開(kāi)發(fā)板擴(kuò)展接口的高速AD/DA子板的研制

The development of high speed AD/DA daughter board based on expansion ports of the DE2 board

作者：周宇林一聰鄭政

單位：上海理工大學(xué)醫(yī)療器械與食品學(xué)院(上海 200039)

關(guān)鍵詞： AD/DA；高速；子板；DE2

分類號(hào)：

出版年·卷·期（頁(yè)碼）：2012·31·2（178-182）

摘要：

目的具有強(qiáng)大數(shù)字信號(hào)處理能力的DE2開(kāi)發(fā)板在高速模擬信號(hào)處理應(yīng)用中，需要結(jié)合高速AD/DA子板進(jìn)行工作，而現(xiàn)有子板價(jià)格昂貴且采樣速率有限，需要研制專用的高速AD/DA子板。方法基于DE2開(kāi)發(fā)板的擴(kuò)展接口進(jìn)行子板設(shè)計(jì)：AD采用AD9230；DA采用AD9708；采用高級(jí)時(shí)鐘芯片AD9517以滿足高速AD/DA轉(zhuǎn)換對(duì)高質(zhì)量時(shí)鐘的要求；子板使用雙面板制作以降低成本。結(jié)果實(shí)驗(yàn)結(jié)果表明，結(jié)合DE2開(kāi)發(fā)板，該子板可采樣高速模擬信號(hào)，同時(shí)輸出高質(zhì)量模擬信號(hào)。結(jié)論研制成功的高速AD/DA子板，適合于在高速模擬信號(hào)處理中應(yīng)用。

Objective The DE2 board has strong ability for digital signal processing. It works with high speed AD/DA daughter board necessarily when processing high speed analog signals. The existing daughter board is expensive and its sampling rate is not high enough，so it is needful to develop a special high speed AD/DA daughter board. Methods The daughter board was developed based on the expansion ports of the DE2 board，AD with AD9230，and DA with AD9708. AD9517 was used to satisfy the high quality clock signal in high speed conversion. The daughter board was produced by double-face board to reduce costs. Results The results indicated that the daughter board could sample high speed analog signals and output high quality analog signals with DE2. Conclusions The development of high speed AD/DA daughter board was successful and fit for the application of high speed analog signal processing.

參考文獻(xiàn)：

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