Patent Number: 6,674,302

Title: Self-compensation circuit for terminal resistors

Abstract: A self-compensation circuit for terminal resistors includes a current mirror, a reference resistor, a comparator and a plurality of terminal resistors. The current mirror provides a first current through the reference resistor to form a first voltage and a second current through an external resistor to form a second voltage. The comparator compares the first voltage and the second voltage and generates an output voltage that is able to be feedback to the control terminal of the reference resistor. The control terminal of each terminal resistor is connected to the output end of the comparator, thus the resistance of each terminal resistor is able to be proportional to the resistance of the external resistor.

Inventors: Yen; Chin-Hsien (Hsin Tien, TW)

Assignee: Via Technologies, Inc.

International Classification: G06G 7/12 (20060101); G06G 7/00 (20060101); H01C 13/00 (20060101); H03K 19/23 (20060101); H03K 19/20 (20060101); H03K 019/23 ()

Expiration Date: 01/06/2021