In a CMOS bandgap reference circuit, the respective collectors of {TAIL ~ two lateral parasitic NPN transistors} are connected to {HEAD ~ the two nodes} of a current mirror 
In a CMOS bandgap reference circuit , the respective collectors of { TAIL ~ two lateral parasitic NPN transistors } are connected to { HEAD ~ the two nodes } of a current mirror
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH