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各位layout前輩小弟在研究上要做到極低功耗幾百nA同時低mismatch(高CMRR)
! Y1 h; I! L. u3 o% @8 J$ U1 e& P( U的電容回授OTA,基本上是for ECG的PREAMP
( T% O" c) K, Q6 c3 [我對LAY法及電容的lay法做了些考量,
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E5 B2 k% E6 `% J; y6 z# TFIRST-STAGE
. K3 ?" m4 Z1 u' b, K1. common centroid. z. m! Q: R, Z5 X
2. shortest signal path b8 a- V6 D# [2 @
3. Dummy poly
# T6 s" I! @9 m" V4. Body effect concerning
: q# Z y1 @6 V/ r電容* B+ R7 o$ V1 N* g
1. common centroid; w" N! T. \# @0 n
2. dummy 2 |: w; C2 a- j8 T2 [% @# @( v( W' V2 B" j
3. minimization of Perimeter area ratio, circular approximation=>octagon
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% V- `+ [7 x4 o: a8 j9 y如果以MISMACH為主要考量,還有什麼LAYOUT技巧是需要的呢?/ w" Q/ m# G! W, L* @. b
& i0 u5 g) Z1 O還不知道要怎麼PO圖,我再補上目前做好的LAYOUT圖 |
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