hspice語法-運(yùn)算放大器

例子：簡(jiǎn)單跨導(dǎo)放大器分指標(biāo)分析度、壓擺率、SwingRange、失調(diào)、噪聲、 vdd0 vin0DC2.5VAC1V0 vo1N_0001rzv N_0001voccv 0voclv 0vb vbvdd100k vo1vipN_00020nmL=0.6uW=12uM=2 N_0003N_0003vddvddpm L=2uW=12u vovo1vddvddpmL=0.6uW=12uM=8 N_0003vinN_00020nmL=0.6uW=12u vovb00nmL=5uW=12uM=8 vbvb00nmL=5uW=12uM=1 N_0002vb00nmL=5uW=12uM=4Hspice執(zhí)行網(wǎng)Obeacv(vo1)v(vo)*.dcv_vdc2.482.5*.trans10ns200ns20ns.acdec101k100meg$sweeprzv02k.pararzv=1kccv=1p.inc Ota*.optionpost*.probeacv(vo1)v(vo)*.dcv_vdc2.482.5*.trans10ns200ns20ns*.acdec101k100meg$sweeprzv02k.pararzv=1kccv=1p.inc 瀏覽并分析.lis文件的內(nèi)用oper查找，即可找到operatingpointinformation這注意此時(shí)Obedcv(vo1).dcv_vdc2.452.55*.trans10ns200ns20ns*.acdec101k100meg$sweeprzv02k.pararzv=1kccv=1p.inc Gain=

Obedcv(vo1).dcv_vdc2.482.495*.trans10ns200ns20ns*.acdec101k100meg$sweeprzv02k.pararzv=1kccv=1p.inc 對(duì)對(duì)于增益要求G0，存在對(duì)應(yīng)的輸出swingrange，若用小信號(hào)增益gain>G0作為swingrange例如G0=500，則根據(jù)下圖其swingrange(0.485,故ota的系統(tǒng)失調(diào)

Small-signalObeacv(vo1)v(vo)*.dcv_vdc2.482.495*.trans10ns200ns20ns.acdec101k200meg$sweeprzv02k表示沒有補(bǔ)償電阻.pararzv=0ccv=1p表示沒有補(bǔ)償電阻.inc 中的 中的v_vdc值設(shè)為：V_Vdcvip0直流small-signal直流small-signal單位增益帶寬GBWgm1/(Cc+CGD3)主極點(diǎn)p11/[Ro1gm3Ro(Cc+CGD3)]第二極點(diǎn)p2gm3/(CL+Co)z1/[(Cc+CGD3)(gm3-1-查看.lis文件知gm32mgm10.83mgm1bOta分析分析miller補(bǔ)償效.beacv(vo1)v(vo)*.dcv_vdc2.482.495*.trans10ns200ns20ns.acdec101k500megsweepccv05p.pararzv=0ccv=1p.inc GBW減小相位GBW減小相位裕度增增加Ccp1RzRzObeacv(vo1)v(vo)*.dcv_vdc2.482.495*.trans10ns200ns20ns.acdec101k500megsweeprzv02k.pararzv=0ccv=1p.inc Obeacv(vo1)v(vo)*.dcv_vdc2.482.495*.trans10ns200ns20ns.acdec101k500meg$sweeprzv02k.noisev(vo)v_vac.pararzv=1kccv=1p.inc ****theresultsofthesqrtofintegral(v**2/freq)fromfstartupto100.0000x hz.usingmorefreqresultsinmoreaccuratetotalnoise****totaloutputnoise ****totalequivalentinputnoise 還可以改變Cc的值，來看總的等效輸入噪聲有什么變U1,u2

W

tN

ΔVt,ΔW為元件間的W ΔVt,ΔW為元件間的WM1,m2

W

gmP

VtP

* P

mNtox=1.3e-toxn,toxp的值與晶體管隨機(jī)失配s閾值電壓(mVs

tox

WW=12u,M=2這里alfa為 分布變依次將網(wǎng) 的內(nèi)容按照上面的方法修Obedcv(vo1).dcv_vdc2.452.510.0001sweepmonte=*.trans10ns200ns20ns*.acdec101k500meg$sweepccv05p*.noisev(vo)v_vac.pararzv=1kccv=1pclv=1p.inc (-3030次monte-carlo仿真結(jié)在在中將V_vac的定義換成V_vpulsevin0PULSE2320ns0.1n0.1n100nota輸出slewota輸出betranv(vo1)*.dcv_vdc2.452.510.001sweepmonte=.trans0.1ns*.acdec101k500meg$sweepccv05p*.noisev(vo)v_vac.pararzv=1kccv=1pclv=1p.inc Problem:在Problem:在模型corner仿 中將V_vpulse的定義換回來 vin0DC2.5VAC1V模型corner仿Obedc.dcv_vdc2.452.510.0001$sweepmonte=*.trans0.1ns*.acdec101k500meg$sweepccv05p*.noisev(vo)v_vac.pararzv=1kccv=1pclv=1p.inc 模型corner仿 Ota.lib‘LIB_PATH\csmc.lib’.lib‘LIB_PATH\csmc.lib’.lib‘LIB_PATH\csmc.lib’.lib‘LIB_PATH\csmc.lib’fs模型corner仿.beacv(vo)*.dcv_vdc2.452.510.0001$sweepmonte=*.trans0.1ns.acdec101k500meg$sweepccv05p*.noisev(vo)v_vac.pararzv=1kccv=1pclv=1p.inc 模型corner仿 vip0 vip0.lib'f:\spice\userlib\csmc.lib' vip0.lib'f:\spice\userlib\csmc.lib' vip0.lib'f:\spice\userlib\csmc.lib'模型corner仿 模型corner仿模型corner仿由仿真結(jié)果可測(cè)得PhaseObedc.dcv_vdc2.452.510.0001sweeptemp0100*.trans0.1ns*.acdec101k500meg$sweepccv05p*.noisev(vo)v_vac.pararzv=1kccv=1pclv=1p.inc

將中的將中的V_vdc定義改為V_vdcvip0Obeacv(vo).temp*.dcv_vdc2.452.510.0001$sweepmonte=*.trans0.