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US 2003/0200514 A1Published application
Accurately tuning resistors
AssigneeIntel Corporation
InventorsRobert X. Jin, Vivian Hu, Stephen F. Dreyer
Life of this patent
Estimating the term…
Abstract
Resistors may be more accurately tuned by using an external resistor and comparing the value of an internal resistor to the value of the external resistor. The value of the internal resistor may be adjusted to match the value of the external resistor. Any number of on-chip resistors may then be matched and adjusted using the information obtained with respect to the first internal resistor.
Claims30
A method comprising:
- comparing the values of an internal resistor on an integrated circuit to an external resistor external to the integrated circuit;
- adjusting the value of the internal resistor to match the value of the external resistor;
- and
- match and adjust the value of another resistor on the same integrated circuit.
1 more element
A circuit comprising:
- a voltage reference coupled to a first node;
- an internal resistor coupled to a second node;
- a comparator coupled to said first and second nodes;
- a switching network including switches and resistors, said network to selectively couple resistors in parallel to said internal resistor, said switching network coupled to said comparator.
1 more element
An integrated circuit comprising:
- a first node;
- an internal resistor coupled to said first node;
- a second node connectable to an external resistor;
- a comparator to compare the voltages on said first and second nodes;
- logic coupled to said comparator;
- and
- a switching network to selectively couple one or more resistors in parallel to said internal resistor, said switching network coupled to said logic.
4 more elements
Dependencies are inferred from the claim text.