Voltage trimming circuit

Details Voltage trimming circuit Voltage trimming circuit

2011-04-05

2011-04-05

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C327S306000, C327S308000

Reexamination Certificate

active

07920011

ABSTRACT:
A voltage trimming circuit is provided. The voltage trimming circuit has an input stage, an up-trimming resistor ladder, a down-trimming resistor ladder and a control means. The input stage has a first input, a second input and an output, wherein the first output is to receive an input voltage, the second input is connected to a connection point and the output is to provide an output voltage based on a difference between the voltage of the first and the second input. The up-trimming resistor ladder is connected between the output of the input stage and the connection point and the down-trimming resistor ladder connected between a ground potential and the connection point. The control means controls the resistance of the up-trimming and the down-trimming resistor ladder to up-trim or down-trim the output voltage.

REFERENCES:
patent: 4072906 (1978-02-01), Schroder
patent: 4978904 (1990-12-01), Fitzpatrick et al.
patent: 5923164 (1999-07-01), Ehling et al.
patent: 6650173 (2003-11-01), Khouri et al.
patent: 6949971 (2005-09-01), Jang
patent: 7615980 (2009-11-01), Sase et al.
patent: 2001/0033195 (2001-10-01), Kanda et al.
patent: 2005/0024129 (2005-02-01), Jang

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