Texas Instruments Corporation

Albert Shih

Jeffrey E Koelling

A circuit is designed with a first transistor ( ) having a current path coupled between a supply terminal ( ) and a first output terminal ( ). A second transistor has a current path coupled between the first output terminal and a reference terminal. The current path of the second transistor current path has substantially the same width and length as the first transistor current path. A first comparator circuit ( ) has first ( ) and second ( ) input terminals and a second output terminal ( ). The first input terminal is coupled to the first output terminal. The first comparator circuit produces a control signal in response to a voltage between the first and second input terminals. A generator circuit ( ) receives the control signal and produces an output voltage at the supply terminal.

Level detection by voltage addition/subtraction

A circuit is designed with a first transistor (,) having a current path coupled between a supply terminal (,) and a first output terminal (,). A second transistor has a current path coupled between the first output terminal and a reference terminal. The current path of the second transistor current path has substantially the same width and length as the first transistor current path. A first comparator circuit (,) has first (,) and second (,) input terminals and a second output terminal (,). The first input terminal is coupled to the first output terminal. The first comparator circuit produces a control signal in response to a voltage between the first and second input terminals. A generator circuit (,) receives the control signal and produces an output voltage at the supply terminal.

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Dallas, TX, United States of America

Albert Shih