NPN bandgap voltage generator

Patent · Mon Dec 08 23:00:00 EST 1986

OSTI ID:6920348

Birrittella, M S; Marley, R R; Nootbar, K D

This patent describes a voltage reference circuit including a first output terminal for providing an output, a first supply voltage terminal, and a second supply voltage terminal, comprising: first means for developing a first voltage having a positive temperature coefficient, comprising: a first NPN transistor having an emitter coupled to the first output terminal, a collector coupled to the first supply voltage terminal, and a base; second means coupled between the first output terminal and the second supply voltage means for providing a resistance; a first resistor; a second resistor; a first diode; a second diode; third means for providing a resistance; and a second NPN transistor having an emitter coupled to the second supply voltage terminal by the first resistor, a base coupled both to the second supply voltage terminal by the first diode and to the base of the first NPN transistor by the third means, and a collector coupled to a node by the second diode. The node is coupled to the base of the first NPN transistor by the second resistor.

• Assignee: Motorola, Inc., Shaumburg, IL
• Patent Number(s): US 4628248
• OSTI ID: 6920348
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420800* -- Engineering-- Electronic Circuits & Devices-- (-1989)
CURRENTS
DESIGN
ELECTRIC CURRENTS
ELECTRIC GENERATORS
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
EQUIPMENT
OPERATION
RESISTORS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
TEMPERATURE DEPENDENCE
TRANSISTORS