how to design the layout of an nwell Resistor

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Rcy

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Can anyone say me how to design the layout of an nwell resistor of value 10K. I am trying to design the resistor in magic layout tool. please help..
thanks in advance
 

This is a simple well resistor under STI (Field), the cross section shows an NWell resistor.
For better isolation the resistor could sit in another well (for a triple well process). It could also be surrounded by an isolation ring and could have a metal field plate over the top of the resistor body.
 

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    Rcy

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For Nwell resistor, usually it is hot Nwell (is not connecting to the highest voltage). So a P+ guard ring around it is needed.
 
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