??·?

    ?????·??adc?·?????????adc????adc??????????λ?

? 1

    ??bandwidth?????￡???紫adc??sample rateadc???????ο???nyquist theorem?????????????

    ??bandwidth

    ????ΧΧ?????????????豸adc????????70.7%????-3 db???100 mhz???

? 2

    ???1 v, 100 mhz???100 mhz???????????0.7 v

? 3

    ????е??屶?????? = 3 5*??????????r???

? 4

    ??100 mhz50 mhz??r=2??10.5%

    ??й????rise time???????10%?90%?????1?????????-c???

?5

    ?100 mhzλ??3.5 ns?λ??????1/31/5??2????? trm λ? trd???? trsá

? 6

    ??100 mhz??12 ns??????12.5 ns

    ??sample rate

    ??????????????adc?????????????κ?桢?????????????????adc???????national instruments??豸????Ч???ni 5112??100 megasamples/second ms/s趨? 100ms/s/n??n = 1,2,3,4,....

? 7

    ο???nyquist theorem

    ???ο???? > 2 * ??????

    ο?????????????????????spectrum of interest?????passband?aliasalias?????????С???5 mhz?6 ms/s adc?adc?alias??1 mhz?5 mhz?

? 8: ο????

    5 mhz?alias????У1 mhz??????alias??????????

• ?? ?????
• ?? --·ɡ