Analog switch

Details Analog switch Analog switch

2007-09-18

2007-09-18

Vu, Hung (Department: 2811)

Active solid-state devices (e.g., transistors, solid-state diode

Field effect device

Having insulated electrode

C257S372000, C257S393000

Reexamination Certificate

active

10983245

ABSTRACT:
An analog switch has a first circuit and a second circuit. The first circuit has an NMOS and PMOS connected in series, and the second circuit has a PMOS and NMOS connected in series. The first and second circuits are provided in parallel between an input terminal and output terminal of the analog switch. The gate of each NMOS is connected to a terminal to which a first clock signal is supplied, and the gate of each PMOS is connected to another terminal to which a second clock signal is supplied. The second clock signal is a reversal of the first clock signal. When the analog switch is set to the OFF state and a voltage that is above the supply potential is applied to the input terminal, the NMOSs become reverse-biased diodes. Therefore, an off leak current is not produced.

REFERENCES:
patent: 6046622 (2000-04-01), Miles
patent: 6924535 (2005-08-01), Hayashi
patent: 6995435 (2006-02-01), Schuelein
patent: 05-218840 (1993-08-01), None
patent: 2000-077992 (2000-03-01), None
patent: 2001-510951 (2001-08-01), None
patent: 2003-158446 (2003-05-01), None
patent: WO9904493 (1999-01-01), None
JPO Office Action dated Jan. 30, 2007, and English language translation.

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