Analog switch circuit
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United States of America Patent
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Aug 10, 2004
Issued Date -
N/A
app pub date -
Apr 22, 2003
filing date -
Sep 28, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An analog switch and an analog multiplexer are realized by which electron charges which have been stored in a stray capacitance provided on the output side thereof before a switch is conducted do not give an adverse influence to a level of such an analog input voltage which is subsequently entered after the switch has been switched. An analog switch circuit is arranged by insulating gate type transistors and a voltage follower which is parallel-connected to these insulating type transistors. When the analog switch circuit is turned ON, the voltage follower is firstly brought into an active state, and thereafter, these insulating gate type transistors are brought into conductive conditions.
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