Bicmos voltage reference generator

Details Bicmos voltage reference generator Bicmos voltage reference generator

G - Physics

05

F

323/4

G05F 3/24 (2006.01) G05F 3/30 (2006.01)

Patent

CA 1292277

8332-186 / 53.1115 BICMOS VOLTAGE REFERENCE GENERATOR ABSTRACT OF THE DISCLOSURE A BICMOS voltage reference generator circuit generates and maintains a reference voltage within 3 mV over an 80°C temperature range and over a 1 volt change in power supply level. The circuit uses feedback from the output of the reference voltage generator to the current source supplying current to the voltage reference generator. This feedback increases the effective output impedance of the current source, making the reference voltage output substantially independent of power supply variations. The circuit operates with power supply differential as low as about 3 volts, and preferably is fabricated from bipolar transistors and MOS transistors on the same chip. RCCO222:ms

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