[問題] Hspice-電荷放大器!!
各位板上大大:
這幾天突然想測試連續時間式電荷放大器,當然想法是由一般
電阻組合而成的單端反向放大器而來,且是可以簡單測試成功的,
但是,當電阻換成電容時卻出現問題,信號不僅沒放大還縮小,如何才能
使訊號放大2倍,可否有板上大大願意為此難題探討一下 ~~ 感激不盡 !
連續時間式單端電荷放大器如下圖所示:
assume --> c1= 2pf c2=1pf Vi=sin(0v 10mV 1k)
c2
---! !---
c1 1 1
Vi--! !---(-) ---- Vo= -(c1/c2)*Vi
1 1
--1(+) 1
1 ---------
1.65V
--
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