hyc
Junior Member level 1
.tran analysis
Hi, All:
This may seem very obvious to many of you, but I am somewhat confused on what we are trying to verify with TRAN analysis in SPICE.
Take for example, the typical spec for OpAmp are
DC Gain,
Gain Bandwidth
Input Common Mode Range
Slew Rate
Output Voltage Swing Range
CMRR
PSRR
....
All these spec, once designed could be verified with running DC and AC analysis alone, couldn't they? So why do we ever need TRAN analysis, there doesn't seem to have a delay time spec to meet like in digital ckt, Can anyone explain what stuff we have to and can only verify with .TRAN analysis? Also if we find something wrong from running .TRAN, analysis were they correlated to any of above mentioned Spec.
Thanks in advance.
Hi, All:
This may seem very obvious to many of you, but I am somewhat confused on what we are trying to verify with TRAN analysis in SPICE.
Take for example, the typical spec for OpAmp are
DC Gain,
Gain Bandwidth
Input Common Mode Range
Slew Rate
Output Voltage Swing Range
CMRR
PSRR
....
All these spec, once designed could be verified with running DC and AC analysis alone, couldn't they? So why do we ever need TRAN analysis, there doesn't seem to have a delay time spec to meet like in digital ckt, Can anyone explain what stuff we have to and can only verify with .TRAN analysis? Also if we find something wrong from running .TRAN, analysis were they correlated to any of above mentioned Spec.
Thanks in advance.