Which capacitor layout is better

[amara]

poly poly cap+nwell+design

while doing layout for capacitor which capacitor layout is better one.

 

[jagadesh]

Hi,
Can u be a little more Specific?? If your Question is intended for Which Type of Capacitor Usage is Better, I would Say, MIM Capacitors(Metal-In-Metal) Capacitors are better, as it has got good response at Higher Frequencies, But you have to compromise with the value of Cap, as it occupies more area. If u can alter the query, maybe I can provide better answers.

 

[Mistico_Pereyra]

hello Amara, capacitor's material depends of your application, if you can write a more specific question we can help you!!

 

[ssuchitav]

HI!

The file will be helpful for selection and design of IC Capacitors and resistors.

 

[samuel]

it depends on your circuit.

 

[dfullmer]

Some of the information that might help determining are:

Main Purpose of the Cap is?

Is the Cap Pulsed or DC storage?
AC?
What frequency will it be operating at?
What voltage?
What Current? (Peak and AVG)

As stated by others there are many different functions that these devices perform and each requires some differences in layout.

 

[electronrancher]

let's assume you're using poly-poly cap. for one big cap (not matched to anything else) it's ok to make two large sheets of poly, with a metal cross as the top contact and a ring of metal around the bottom plate for the bottom contact.

if you need matched capacitors, you would use unit cell layout.

 

[calibre]

if you use the MIM Cap, please make sure it should be surrounded by NWELL,

 

[vladimir1984]

Which is the best capacitor layout for the charge redistribution ADC?

 

[ambreesh]

whichever gives you least parasitic

 

[truebs]

Well when it comes to layout, you need to take considerations about many things , so we can't declare that one cap is better than other it depends on :-
Process
Application
Layout Techniques followed.

So its a very specific decision to make...some times we don't have choice too.