Dummy device distance to active mos device

[vrinda.thingale]

Please anybody help me to know ,Is it neccessary to maintain the same distance between actual device and dummy device in analog layout? Consider less area available.

 

[erikl]

Is it neccessary to maintain the same distance between actual device and dummy device in analog layout? Consider less area available.

Same distance, yes. But to save area, the dummy device doesn't need to have the same length resp. width.

 

[Blue Hawk]

Please anybody help me to know ,Is it neccessary to maintain the same distance between actual device and dummy device in analog layout? Consider less area available.

You can place the dummy device with minimum spacing to the actual device..
In case of less area,
Make the dummy device with 1. Same width similar to the actual device.
2. Minimum length..
The above thing is applicable if you're placing dummies on left & right side.
And it is vice versa, if you're placing dummies on top & bottom..

Regards,
Satz