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analog switch

Analog switches are CMOS devices with which switching functions are executed. They are functionally comparable to relays and can have one or more switching contacts.

The switching contacts of a switch are designated as normally open and normally closed, whereby the normally open contact is closed in the rest position and the normally closed contact is open. The contacts are only activated by corresponding control signals. In terms of designation, an analog switch with four individually actuated NO contacts is called a 4x1 NO contact. If, on the other hand, four N/O contacts are switched by a common control input, such an analog switch is called 1x4-NO contact. The same applies to normally closed contacts or to combinations of normally closed contacts and normally open contacts.

Important characteristics of analog switches are the on-resistance, the crosstalk and its attenuation, the switching times, which are in the nanosecond range, and the permissible switching current.

Englisch: analog switch
Updated at: 27.09.2020
#Words: 155
Links: complementary metal oxide semiconductor (Chip) (CMOS), switch, indium (In), analog, crosstalk (XT)
Translations: DE

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