a capacitances D/A convertor

[dahuangpeng]

I have design a capacitance D/A convertor, but its output have a big
parasitic capacitance which is too big for D/A, and generate a big gain error, so would anyone help me with it. thanks very much

 

[D.A.(Tony)Stewart]

reduce your parasitics

 

[dahuangpeng]

parasitic capacitance cannot be reduced

 

[KlausST]

Hi,

There is about no information in the answer.
No single value like capacitance, frequency, resolution...
No circuit, not even the DAC topology..

With this few informations it is about impossible to help.

Klaus

 

[crutschow]

I have a problem with your lack of information about your design.
Please help.

 

[D.A.(Tony)Stewart]

parasitic capacitance cannot be reduced

Which part of your Design Verification failed? The part about writing detailed specs? or the part about how do I ensure the design is realistic?