Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1997-07-31
1999-03-09
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
326113, 327314, 327379, H03K 301
Patent
active
058806210
ABSTRACT:
Disclosed is an analog switch circuit which has: an analog switch which is composed of a P-channel first transistor and a N-channel second transistor whose drains are connected to each other and whose sources are connected to each other; first and second diodes which are in parallel and reversely to each other connected between a back gate of the first transistor and a high-potential power source; and third and fourth diodes which are in parallel and reversely to each other connected between a back gate of the second transistor and a low-potential power source. Further disclosed is an analog switch circuit which has: an analog switch which is composed of a P-channel first transistor and a N-channel second transistor whose drains are connected to each other and whose sources are connected to each other; and a N-channel third transistor whose gate is connected to a high-potential power source and/or a P-channel fourth transistor whose gate is connected to a low-potential power source; wherein the third transistor and/or the fourth transistor are/is in series connected between an input terminal and an input terminal of the analog switch.
REFERENCES:
patent: 5132577 (1992-07-01), Ward
patent: 5579200 (1996-11-01), Rajkanan et al.
Callahan Timothy P.
NEC Corporation
Zweizig Jeffrey
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