{HEAD ~ A design structure} for {TAIL ~ a loop filter} in a phase lock loop circuit comprising a reference precision resistor, a first and second FET, wherein the gate of the first FET is tied to the gate of the second FET, and a filter capacitor connected to the first FET for producing a capacitor voltage 
{ HEAD ~ A design structure } for { TAIL ~ a loop filter } in a phase lock loop circuit comprising a reference precision resistor , a first and second FET , wherein the gate of the first FET is tied to the gate of the second FET , and a filter capacitor connected to the first FET for producing a capacitor voltage
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