Bidirectional leakage compensation circuits for use in integrated circuits and method therefor
AssigneeSemiconductor Components Industries, LLC
InventorJohan Camiel Julia Janssens
Life of this patent
Estimating the term…
Abstract
A leakage compensation circuit includes a buffer amplifier, a link coupling element, and a leakage compensation element. The buffer amplifier has an input coupled to a sense node, and an output. The link coupling element has an input coupled to the output of the buffer amplifier, and an output, wherein the link coupling element is unidirectional in a direction from the input to the output thereof. The leakage compensation element has a first current terminal coupled to the sense node, a control terminal coupled to the output of the link coupling element, and a second current terminal coupled to a reference voltage terminal.
Claims26
A leakage compensation circuit comprising:
- a buffer amplifier having an input coupled to a sense node, and an output;
- a link coupling element having an input coupled to said output of said buffer amplifier, and an output, wherein said link coupling element is unidirectional in a direction from said input to said output thereof;
- and
- a leakage compensation element having a first current terminal coupled to said sense node, a control terminal coupled to said output of said link coupling element, and a second current terminal coupled to a reference voltage terminal, wherein said leakage compensation element comprises an anti-series diode.
An integrated circuit having a leakage compensation circuit, the leakage compensation circuit comprising:
- a buffer amplifier having an input coupled to a sense node, and an output;
- a link coupling element having an input coupled to said output of said buffer amplifier, and an output, wherein said link coupling element is unidirectional in a direction from said input to said output thereof;
- and
- a leakage compensation element having a first current terminal coupled to said sense node, a control terminal coupled to said output of said link coupling element, and a second current terminal coupled to a reference voltage terminal, wherein said leakage compensation element comprises an anti-series diode.
A method of performing leakage compensation for leakage currents flowing to or from a sense node, comprising:
- buffering a voltage on the sense node and providing a buffered voltage to a middle node in response to said buffering;
- unidirectionally coupling said buffered voltage to a control node;
- and
- biasing a leakage compensation element having a first current terminal coupled to said sense node and a second current terminal coupled to a reference voltage terminal by coupling a control terminal of said leakage compensation element to said control node, wherein said biasing said leakage compensation element comprises biasing an anti-series diode.
Dependencies are inferred from the claim text.