Variable resistance circuit

Details Variable resistance circuit Variable resistance circuit

2007-03-13

2007-03-13

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C327S427000, C327S334000

Reexamination Certificate

active

11068897

ABSTRACT:
Values of control signals61, 62, 63, . . . , 6n, each inputted to an input terminal for operation control6of each of transistor elements4constituting a variable resistance portion2, are controlled based upon an input signal40and offset signals52, 53, . . . , 5ngenerated by an offset provision portion3. Thus, a ratio of the maximum resistance value to the minimum resistance value can be made large, while using a limited power supply voltage range as a control range.

REFERENCES:
patent: 6229375 (2001-05-01), Koen
patent: 6822502 (2004-11-01), Soda
“Design Principle of CMOS VLSI” by Neil H.E. Weste, Kamran Eshraghian and Tomizawa Takashi, Matsuyama Yasuo 1st Ed., Maruzen, Aug. 30, 1988, pp. 33-37.

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