Digitally controllable analog switch

Details Digitally controllable analog switch Digitally controllable analog switch

1980-10-31

1983-05-31

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307241, 307490, H03K 1756, H03K 342

Patent

active

043862853

ABSTRACT:
An operational amplifier for generating an output analog signal at an output node representative of an analog signal fed to the non-inverting input of the operational amplifier. A controllable switch connects the output of the operational amplifier to the output node, and the signal at the output node is fed back to the inverting input of the operational amplifier. The controllable switch is responsive to a digital logic control signal for completing the circuit path between the operational amplifier and the output node in order to generate the output analog signal. A plurality of such operational amplifiers have their feedback path connected at a common output node.

REFERENCES:
patent: 2812445 (1957-11-01), Anderson
patent: 3304429 (1967-02-01), Bonin et al.
patent: 3349319 (1967-10-01), Aiken
patent: 3539928 (1970-11-01), Gardner et al.
patent: 3885220 (1975-05-01), Fluegal
patent: 4075512 (1978-02-01), Rast, Jr. et al.

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