milvapp
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Hi all,
I have tried to simulate the gain of a simple differential amplifier (graph1),designed in Cadence,in both transient and AC analysis.Here is the thing.When I simulate in AC analysis,according to
(Vout1-Vout2)/(Vin1-Vin2) in dB20,i get a gain of about 17.8 dB as shown in the ACgraph.
However,if I do the same at transient analysis I get as a result what's shown in the Transgraph,
which means that i have no gain at all,as Voutpp=Vinpp.
Am I missing something here?For example do I calculate the gain correctly in both analyses,
because the results are very contrasting.
Any help will be appreciated
(in both analyses)
Vdd=1V
Iss=250uA
Rd=4K
Vin1=Vin2=500mV
Vin2 has 180 phase difference from Vin1.
[/img]
I have tried to simulate the gain of a simple differential amplifier (graph1),designed in Cadence,in both transient and AC analysis.Here is the thing.When I simulate in AC analysis,according to
(Vout1-Vout2)/(Vin1-Vin2) in dB20,i get a gain of about 17.8 dB as shown in the ACgraph.
However,if I do the same at transient analysis I get as a result what's shown in the Transgraph,
which means that i have no gain at all,as Voutpp=Vinpp.
Am I missing something here?For example do I calculate the gain correctly in both analyses,
because the results are very contrasting.
Any help will be appreciated
(in both analyses)
Vdd=1V
Iss=250uA
Rd=4K
Vin1=Vin2=500mV
Vin2 has 180 phase difference from Vin1.
[/img]