Problem with bandgap bias (solved)

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bandgap bias

hi guys
i have a problem about the bandgap bias ,it contains a OP and bandgap core.my op is a two stage op with PMOS INPUT pair and second stage is a simple driving stage. and i want use the CTAT as my op's bias,how can i do without lower my op's gain. if i use a diode connect it hurts my gain a lot .so how can i do ?
any suggestion is welcomed
thanks in advance
 

Re: bandgap bias

Hi,
Chapter 5 of the book "Trade-offs in analog circuit design", by Toumazou and Gilbert, will help you.
 

bandgap bias

hi naalald
thanks ,but i have no this book ,can you show me the link ?
thank you
 

Re: bandgap bias

Hi,
Here is the link.
 

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