如何对全差分运放仿真？

adampippo · 发表于 2009-2-23 14:15:11

原帖由 kooba 于 2007-9-25 16:59 发表

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看到一个关于全差分运放仿真的测试电路。

请问一下在测试电路里面差分输入应该怎么写。是只用ac信号吗？那输出该怎么写呢？

高手能不能把测试的spice写一下。

我看LZ的图仿过开环增益，但不成功，HSPICE报说不收敛呀

711jim · 发表于 2009-2-23 19:27:33

I need thie document, Thank you very muvh!

mervyner1 · 发表于 2009-4-7 07:06:59

thank u

weiwei3 · 发表于 2009-4-7 19:03:34

ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

seujimmy · 发表于 2009-4-7 19:10:30

有资料分享么？

weiwei3 · 发表于 2009-4-7 19:13:39

ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff

xiaoyy · 发表于 2009-4-8 17:42:27

下来看看哈

zhfhit · 发表于 2009-4-8 18:00:06

use hspice simulate dieeerential opamp:
use ideal cmfb replace the cmfb circuit,
.SUBCKT CMFBIDEAL  OUTP OUTN VCM BIAS  VCMFB
E1  OUTN1  0 OUTN    0    -0.5
E2  OUTP1  0 OUTP    0    0.5
E3  VCMO 0 OUTP1 OUTN1 1
E4  VCAP 0 VCM    BIAS    1
E5  VCMFB  0 VCMO    VCAP    1
.ENDS

X100  OUTP OUTN VCMO  VBN2  CMFB  CMFBIDEAL

vcm    vcm    0       'vcm'

vcmi    vcmi    0       0.9
vcmo    vcmo    0       0.9

vip    vip    vcmi       0 ac=1
vin    vcmi    vin       0 ac=1

California · 发表于 2009-4-8 20:22:50

Thanks

zimu_li · 发表于 2009-4-11 23:33:34

thanks ,看看

如何对全差分运放仿真？

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