用AD7008构成可程控正弦波信号发生器
本帖最后由 jameswangsynnex 于 2015-3-3 20:00 编辑 <br /><br /><span style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><span style="mso-spacerun: yes"> </span></span><span style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">在许多电子系统中，经常需要用到频率和幅度可调的正弦波信号作为基准或载波信号。正弦渡信号主要通过模拟电路或</span><span lang="EN" style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">DDS(Direct Digital Synthesis)</span><span style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">等两种方式产生</span><span lang="EN" style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">.</span><span style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">相对于模拟电路，</span><span lang="EN" style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">DDS</span><span style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">具有相位连续、频率分辨率高、转换速度快、信号稳定等诸多优点，因此，</span><span lang="EN" style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">DDS</span><span style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial">存雷达、通信、测试、仪表等领域得到了广泛的应用。</span><span lang="EN" style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: Arial; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><br style="mso-special-character: line-break" /><br style="mso-special-character: line-break" /></span>这玩意儿谁用过了？好用不好用啊？温度特性怎么样啊？高人指导一下
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