About the requirement of OTA in pipeline ADC

[houzh]

I am designing a OTA used in the residue amplifier of a pipeline ADC,
but i do not know the requirement the the OTA specially the slewing rate and GBW.
Who can tell me the requirement of slewing rate and GBW
Thanks!

 

[safwatonline]

u shouldhave a settling spec from which u can estimate ur GBW and SR

 

[jerryzhao]

Single stage assume,GBW>{[2F(N+1)Ln2]/(2Π)}*(1/f).
Where F is sample frequence, N is resolution. f is feedback factor.
you should better read some paper about Pipeline.

 

[jennisjose]

Say if you are designing a 8 bit ADC......u need to have atlest 8 * 6 =48 dB SNDR....6 is a approx constant.

If possible go through MAsabi Abo's thesis paper....

This is my Amster project report on pipelined ADC design.
I have included as much schematics as possible.

https://jennisjose.webs.com/pipelinedadc.htm

 

[raditsme]

jennisjose.... the link u provided is not opening... can u please send me your master thesis on my mail...

my email is itsme_live@yahoomail.com....
Thanks