Hi everybody .
I 'm a new beginner in electronic . I got a specification which need design by Candece .Unfortuately , I m not sure which topology i should choose for my deisgin.
This is my specification :
Design a two stage op amp which satisfy :
Using 0.18u technology :
Vdd=1.8 V
Gain>60db
Gain BW >5MHz
Setting <0.5us
Output Swing =1v
Diffential in differential out
off set <10mv
CMRR>60dB
noise <50nv/sqrt(hz) at 1khz
could you guide me more detail which topology i should choose for my device>
Thanks you so much .
hi ,what i mean .
Base on the specification , i 'm not sure the first stage should be fold cascode or telescopic cascode ? then how to satisfy my specification ?
HI Candece UK for you help >
could you pls tell me what is CDSDOC?
CDSDOC is the documentation/help for the cadence design package. If it is correctly installed you can just type 'cdsdoc' from the terminal to start it.
Hi, by using any ordinary two stage opamp, you can design it easily.
If you want an example, u can see the allen-holberg book. They gave very nice example for beginners in the "opamp" chapter.
u can follow the test circuits given there, to check your specifications
thank you all for your help .I will follow your help .
I got one quetions,need help . Could you pls guide me how to choose w/L to satisfy requirement ?