Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2005-04-26
2005-04-26
Cunningham, Terry D. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C327S361000, C327S538000
Reexamination Certificate
active
06885239
ABSTRACT:
A mobility proportion current generator comprises a voltage adder including a first MOS transistor, the voltage adder adding a voltage whose temperature dependency is small with respect to the mobility and a threshold voltage of the first MOS transistor to output a sum voltage, and a second MOS transistor including whose drain terminal is connected to a constant potential point, the sum voltage of the voltage adder being applied between the gate terminal and the source terminal of the second MOS transistor to output a current proportional to the mobility being output from the drain terminal thereof.
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Takafumi Yamaji, et al., “A Temperature-Stable CMOS Variable-Gain Amplifier with 80-dB Linearly Controlled Gain Range”, IEEE Journal of Solid-State Circuits, vol. 37, No. 5, May 2002, pp. 533-558.
U.S. Appl. No. 09/985,595, filed Nov. 5, 2001, USPAP 2002/0084850.
Cunningham Terry D.
Kabushiki Kaisha Toshiba
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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