作者nathanee (nathanee)
站內Electronics
標題Re: [問題] DAC spec相關問題??
時間Sat Jul 12 22:44:28 2008
※ 引述《kevilright (~~~~~~~~~~~~~~~~~~~~~~~)》之銘言：
: 我想請問一下
: 關於DAC 其SPEC上的一些問題
: http://www.analog.com/static/imported-files/data_sheets/AD9755.pdf
: (第三頁)
: AC LINEARITY
: Spurious-Free Dynamic Range to Nyquist
: fDAC = 100 MSPS; fOUT = 1.00 MHz
: 0 dBFS Output 74 84 dBc
: –6 dBFS Output 77 dBc
: –12 dBFS Output 79 dBc
: fDATA = 65 MSPS; fOUT = 1.1 MHz 2 79 dBc
: fDATA = 65 MSPS; fOUT = 5.1 MHz 2 79 dBc
: fDATA = 65 MSPS; fOUT = 10.1 MHz 2 78 dBc
: fDATA = 65 MSPS; fOUT = 20.1 MHz 2 74 dBc
: fDATA = 65 MSPS; fOUT = 30.1 MHz 2 70 dBc
: fDAC = 160 MSPS; fOUT = 1.1 MHz 80 dBc
: fDAC = 160 MSPS; fOUT = 11.1 MHz 77 dBc
: fDAC與fOUT & fDATA分別是指那種特性呢??
: 我google過了~沒有解答 ~"~
: 感謝
fDAC 就是dac所要的clock frequemcy.
fOUT 就是digital input sine wave frequency.
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