A 0.45-V, 14.6-nW CMOS Subthreshold Voltage Reference With No Resistors and No BJTs
1.2-V Supply, 100-nW, 1.09-V Bandgap and 0.7-V Supply, 52.5-nW, 0.55-V Subbandgap Reference Circuits for Nanowatt CMOS LSIs