{HEAD ~ The temperature independent voltage} across the common resistor and {TAIL ~ the base emitter junction} of the second transistor is buffered by a unity gain amplifier 
across
{ HEAD ~ The temperature independent voltage } across the common resistor and { TAIL ~ the base emitter junction } of the second transistor is buffered by a unity gain amplifier
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH