Cap on bias nets of current mirror

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sneha rayala

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Hi ,

I often see that filter caps added on bias nets of Pom’s current mirror are tied to supply on other end , why not to Ground what difference does it make , please help me understand this

 

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The gate-source voltage is regulating the current. If the source is connected to Vdd (as in your circuit) and you filter to ground, supply voltage changes will change the output current.
 

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