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Fully Differentia Op-amp (Read 2875 times)
arp
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Fully Differentia Op-amp
Jan 25th, 2005, 9:11am  
how can we find out slewrate for a fully differential op-amp?
can anybody please tell me the setup reqd for this!!!

i m designing one stage telescopic full diff aop-amp
first of all i want to check wehter my op-amp is working perfect or not without giving CMFB. I given some bias voltage to the i/p transistor and taken care of bias voltages such that all transistors are in saturation and the o/p v is mid of the supply voltage.
now i want to do ac analysis!! what is the etup reqd for that?
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ramakrishna
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Re: Fully Differentia Op-amp
Reply #1 - Apr 26th, 2005, 1:35am  
For the output common mode, how did you fix it to mid supply, is it using initial conditions statements.

for slew rate open loop step response is the best for fully differential opamp, check razavi for that.
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Leyman
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Re: Fully Differentia Op-amp
Reply #2 - Jun 6th, 2005, 1:31am  
Hi arp,

you can try test circuit for fully differential amplifier by Ken Kundert. You can download the paper from www.designers-guide.com.

good luck
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