Ultra miniature offset cancelled bandgap reference with ±0.534% inaccuracy from −10°C to 110°C

An Offset Canceled Bandgap Reference (BGREF) circuit is reported in TSMCs 28nm technology node. This BGREF has a 3-sigma untrimmed inaccuracy of ±0.534% with a power consumption of 58uW and an estimated area of 2142um2 which is one of the smallest BGREFs reported. The BGREF uses a closed loop circuit with a Folded Cascode Amplifier.