{HEAD ~ The transconductor circuit} is adapted for receiving an input voltage from {TAIL ~ at least one voltage source} 
{ HEAD ~ The transconductor circuit } is adapted for receiving an input voltage from { TAIL ~ at least one voltage source }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL