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The Transient Analysis of the OPA in Pipeline ADC

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wjxcom

wjxcom

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The Transient Analysis of the OPA in Pipeline ADC
Hi all: I'm designing a 10 bits 50MHz/s Pipeline ADC, and design a good OPA is difficult for me!

Now I have designed a gainboosted opa, after the Transient Analysis, I found that the settling time is about 46ns, it's too long!

But at the same time I found that at 8.5346ns, this OPA has already reach 0.99989V.

I don't know if this opa is suitble for PipelineADC!
I don't know if the voltage 0.99989V is suitble for PipelineADC!

Help me please, thanx!!

 

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