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Design >> Analog Design >> Fully Differentia Op-amp
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Message started by arp on Jan 25^th, 2005, 9:11am

Title: Fully Differentia Op-amp
Post by arp on Jan 25^th, 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?

Title: Re: Fully Differentia Op-amp
Post by ramakrishna on Apr 26^th, 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.

Title: Re: Fully Differentia Op-amp
Post by Leyman on Jun 6^th, 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