Coded data generation or conversion – Analog to or from digital conversion – With particular solid state devices
Reexamination Certificate
2005-11-22
2005-11-22
Young, Brian (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
With particular solid state devices
Reexamination Certificate
active
06967604
ABSTRACT:
In a D/A converter circuit including a current mirror circuit constructed with an input side transistor circuit and an output side transistor circuit, the input side transistor circuit comprises a series circuit of a first MOS transistor and a second MOS transistor and a first switch circuit connected in parallel to the first MOS transistor. Gates of the first and second MOS transistors are connected commonly and a source of either one of the first and second MOS transistors is connected to a drain of the other of the first and second MOS transistors and the second MOS transistor has a gate length shorter than a gate length of the first MOS transistor.
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Abe Shinichi
Fujisawa Masanori
Maede Jun
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Rohm & Co., Ltd.
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