|
|
本帖最後由 fet 於 2010-1-12 09:01 AM 編輯
" N4 ^5 a3 \" _" E0 T& l* ^0 P
6 `9 y% ^+ L1 r9 l9 mNoise analysis傳統是用AC的方法。不過，現在也可以看到在transient中的效果。
7 P1 O" w( _$ l% w d（1）Cadence 的spectre simulator已經提供transient noise分析的選項。當你simulate transient的時候，會發現多了一個選項。Cadence有一份Application Note講如何使用。TRnoiseAN.pdf，你可能需要你的Cadence管理員進入Cadence的support網站下載。
% l' X0 i8 z+ F5 lhttp://sourcelink.cadence.com/do ... /2006/TrnoiseAN.pdf $ S3 C( `! w, t1 ]: p" D0 x) W. t; D" x, b# h
也可參考
, V: ~0 R8 L/ r. w8 E# _http://www.cadence.com/community ... noise-analysis.aspx, V, p/ W. [9 }+ y w4 P
, k0 W" H7 I' ~. i( n1 i5 U5 d* a（2）HSPICE也跟進，在新版中提供transient noise分析。見
$ ?* k" ~- a3 j d+ @5 Lhttp://www.synopsys.com/TOOLS/VE ... ages/HSPICE-ds.aspx" p( c u( ~5 z3 c$ q
' [8 u4 @4 o+ a2 y7 O2 v; RTransient Noise Analysis- b) `0 V6 K* L
HSPICE’s transient noise analysis enables users to predict the effects of device noise (channel, thermal, flicker, and shot noise) on time domain waveforms. HSPICE offers two powerful approaches for simulating transient noise., T8 |8 V) D4 q$ k
: t) n0 J u4 U+ `Monte Carlo approach: Monte Carlo samples generate an ensemble of noise stimulated waveforms for statistical evaluation. HSPICE supports noise bandwidth and scaling controls and enables the user to plot histograms of the simulation results.
4 O* R# _! W1 _7 {) N8 |' Z4 I
. \- L g7 W5 ]4 }9 _ k$ KStochastic Differential Equations (SDE) approach: With this fast approach to transient noise analysis, statistics are predicted directly using SDEs that solve for the time-varying circuit covariance matrix. SDE noise measurements reveal waveform uncertainty and results can be used to predict circuit jitter due to device noise.
- o7 Y2 w5 A/ C. b5 R
' H k) N' z+ W% o不過，我本人還沒有用過，以后打算用。不過總之應該是可以的，你可再搜索一下資料。 |
|
[複製鏈接]
IP卡
狗仔卡
發表於 2010-1-12 08:50:26
顯身卡