frequency compensation

[kawaiicat]

i got a circuit like this, how to do frequency compensation?
actually everytime i do frequency compensation, i am so scare, cause it seems i never know where to add the ac source, where to break the loop, especially those involve 2 or more loops together, anyone can help? any paper or books has good explaination with it? i hope i can face it bravely, LOL

**broken link removed**

 

[mmohsen]

try Razavi :" Design of Analog CMOS IC"
or Gray & Maier : Analysis and design of Analog IC

 

[ezt]

Hi.
Could you please tell me what's the perpose of your circuit, I mean what is this circuit exactly doing?It seems strange. I don't now where are inputs, for example? However, I think you should find the transfer function of the whole circuit, and then find the poles and zeros. after that, you can think of methods to do the pole-zero cancellation or anything else. but the first step is that. Know about the freq response of the circuit as more as you can.

Regards,
EZT

 

[Btrend]

this is a BJT type bandgap ckt,
u can check Fig4.4 in

and this book also discuss what u want to know in some chapters.

 

[yibinhsieh]

You can compensate the circuit by using capacitance in the gate of the PMOS.

Yibin.