Electricity: power supply or regulation systems – Self-regulating – Using a three or more terminal semiconductive device as the...
Patent
1998-12-17
2000-03-14
Berhane, Adolf Denske
Electricity: power supply or regulation systems
Self-regulating
Using a three or more terminal semiconductive device as the...
323274, 323284, 327 62, G05F 316
Patent
active
060377623
ABSTRACT:
The present invention includes a circuit for detecting voltage levels in an integrated circuit including a first reference voltage(324), a first differential amplifier(349) having an inverting input terminal connected to the first reference voltage, a non-inverting input terminal and an output terminal, a first transistor (356) having a control terminal connected to the output terminal of the first differential amplifier, having a first current handling terminal connected to a voltage supply terminal and having a second current handling terminal connected to the non-inverting input terminal of the first differential amplifier, a first load (358) device having a first terminal connected to the second current handling terminal of the first transistor and a second terminal, a second load device (360) having a first terminal connected to the second of the first load device and a second terminal connected to a second reference potential, a second differential amplifier (391) having an inverting input terminal, a non-inverting input terminal in connected to the first terminal of the second load device and having an output terminal, the output terminal providing voltage detection output signal, a second transistor (382) having a control terminal connected to the output terminal of the first differential amplifier, having a first current handling terminal connected to the voltage supply terminal and having a second current handling terminal connected to the inverting input terminal of the second differential amplifier, a third load device (386, 384) having a first terminal connected to the inverting input terminal of the second differential amplifier and having a second terminal connected to the point at which a voltage level is to be detected. This provides a highly stable voltage detection system.
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Koelling Jeffrey E.
Shih Yung-che
Berhane Adolf Denske
Donaldson Richard L.
Hoel Carlton H.
Holland Robby T.
Texas Instruments Incorporated
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