The loop filter in the phase lock loop circuit comprises a reference precision resistor, a first field effect transistor and a second field effect transistor, wherein the gate of the first field effect transistor is tied to the gate of the second field effect transistor, and a filter capacitor connected to the first field effect {HEAD ~ transistor} for producing {TAIL ~ a capacitor voltage} 
for producing
The loop filter in the phase lock loop circuit comprises a reference precision resistor , a first field effect transistor and a second field effect transistor , wherein the gate of the first field effect transistor is tied to the gate of the second field effect transistor , and a filter capacitor connected to the first field effect { HEAD ~ transistor } for producing { TAIL ~ a capacitor voltage }
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