{HEAD ~ Bandgap voltage reference} using {TAIL ~ bipolar parasitic transistors} and MOSFETs in the current source 
{ HEAD ~ Bandgap voltage reference } using { TAIL ~ bipolar parasitic transistors } and MOSFETs in the current source
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH