{HEAD ~ a first variable capacitor} coupled to {TAIL ~ the first DAC} and the first buffer, the capacitance value of the first variable capacitor corresponding to the first control voltage; and 
coupled to
{ HEAD ~ a first variable capacitor } coupled to { TAIL ~ the first DAC } and the first buffer , the capacitance value of the first variable capacitor corresponding to the first control voltage ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH