HSPICE Transmission Line Signal Intergrity Monte Carlo Worst
- Slides: 73
HSPICE功能 Transmission Line Signal Intergrity Monte Carlo Worst Case Analysis Photocurrent Cell Radiation Effects Characterization Circuit Cell Incremental Optimization
元件對應關係 常用的元件介紹. . val為該元件之大小值 電阻or電容 Rname 1 2 val Cname 3 4 val Rname=val 1 2 3 4 Cname=val 金氧半場效電晶體(MOSFET) Mname D G S B xch L=val W=val G . model xch xmos 獨立電壓源or電流源 Vname 5 6 DC val I name 7 8 DC val (若為交流訊號把DC改成AC即可) 5 v name=val V 6 D Mname S 7 I name=val 8
1. PWL(piece wise linear waveform) 片段線性波形的描述方式 pwl( t 1 v 1 t 2 v 2 t 3 v 3 ………. . ) Ex: pwl (2 s 1 v 3 s 3. 5 v 4 s 2. 5 v + 4. 5 s 0. 5 v 6 s 5 v )
2. PULSE(pulse periodic waveform) 週期脈波的描述方式 pulse( v 1 v 2 td tr tf pw per ) Ex: pulse ( 2 v 5 v 1 s 1 s 1 s 5 s 10 s) 波寬 pw 延遲 td 上升 tr 週期 per 下降 tf
3. SIN(sinusoidal waveform) 弦式波型態的描述方式 Sin ( v 1 v 2 freq ) Ex: sin ( 0 v 4 v 0. 5 k) 頻率 freq
執行Hspice 1 開始 > 程式集 > HSPICE U-2003. 03
基本的RC充電. option 1 Vs 1 0 pwl(0 0 0. 01 ms 5 v) R 1 1 2 1 k Vs=1 v +C 1 2 0 1 uf. tran 0. 01 m 6 m 0. 01 m. print v(1) v(2). end 電容大約4 RC=4 ms 充滿 5 v R=1 K 2 C=1 uf
一階高通濾波器 程式部份. option C 1 1 2 15. 9 u R 1 2 0 5 Vs 1 0 ac 1. ac dec 5 100 k. print ac vdb(2). end 1 Vs C 1 =15. 9 uf R=5 2 Vo
低通濾波器 一階低通濾波器 程式部份. option C 1 2 0 15. 9 u R 1 1 2 5 Vs 1 0 ac 1. ac dec 10 10 10 k. print ac vdb(2). end 1 Vs R 1= 5 C 1 =15. 9 uf 2 Vo
帶通濾波器 二階帶通濾波器 程式部份. option R 1 1 2 5 C 1 2 0 10 u C 2 2 3 25 u R 2 3 0 20 Vs 1 0 ac 1. ac dec 10 10 k. print vdb(3) vp(3). end 1 Vs 2 R 1 C 2 R 2 3 Vo
系統設計者使用環境範例方塊圖 Input Requests Analysis Requests Model/Lib Selections . circuit parameters . dc sweep . circuit marco def . circuit temp . transient . asic vendor lib . circuit stimulus . ac pole zero . memory vendor lib . noise distortion . processor vendor lib. pcb & mcm vendor Spice Execution. circuit simulation. ground bounce, crasstalk. Line termination. Optimzation Result analysis. post graphical processing Fineal design review/Modification
MOSFET特性曲線 以下為增強型FET輸出特性曲線, 假設參數為 (kp=10 u Vto=1 v lambda=0. 01), VGS. VDS為 調整的電壓範圍, 使用. DC來作直流掃描分析 . option m 1 2 1 0 0 n l=0. 1 u w=3 u. model n nmos (kp=10 u Vto=1 v lambda=0. 01) Vds 2 0 10 Vgs 1 0 4. dc vds 0 10 10 m vgs 1 5 1. print i(m 1) VDS由 0 V至 10 V. end VGS由 1 V至 5 V掃描
VGS=5 v VGS=4 v VGS=3 v VGS=2 v VGS=1 v=Vt 如圖為增強型輸出特性曲線
IR=IM 1=IM 2 = ( W/L )2 ( W/L )1 = 0. 5 m. A x 2 = 1 m. A
VDD MOSOP頻率響應
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