Low-voltage bandgap reference

Details Low-voltage bandgap reference Low-voltage bandgap reference

2005-04-26

2005-04-26

Riley, Shawn (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

06885179

ABSTRACT:
Voltage dividing resistors (R1a, R1b, R2a, R2b) are connected in parallel with diode connected bipolar transistors (Q1, Q2) for splitting the voltage to the inputs of an operational amplifier (62, 82). Current is provided to this arrangement by current sources (I1, I2). When the supply voltage is about 0.85 volts, a temperature insensitive reference voltage of about 200 millivolts is available at the drain of a second transistor (M2, M2).

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