The capacitor voltage generated by the filter capacitor sets {HEAD ~ the bias point} of {TAIL ~ the second FET} such that the second FET comprises characteristics of an integrated precision resistor 
of
The capacitor voltage generated by the filter capacitor sets { HEAD ~ the bias point } of { TAIL ~ the second FET } such that the second FET comprises characteristics of an integrated precision resistor
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH