High resolution fast diode clamped comparator

Details High resolution fast diode clamped comparator High resolution fast diode clamped comparator

1981-12-30

1984-04-17

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307561, 307565, 330253, H03K 524

Patent

active

044437170

ABSTRACT:
An electronic comparator circuit (10) adapted for implementation as an integrated circuit semiconductor device provides high resolution and high speed performance. The circuit comprises a first differential amplifier (12) with clamping diodes (50, 52) that allow a fast response; a source-follower stage (14) connected to the first differential amplifier for buffering its output to enable it to be broadbanded; a second differential amplifier (16) driven by the source-follower stage for handling large signal swings while providing additional gain, a level shift stage (18) for driving the output stage in a class A-B mode, and a cascode output stage (20) which provides increased circuit gain and an output signal which ranges from the positive supply voltage (V.sub.DD) to the negative supply voltage (V.sub.SS).

REFERENCES:
patent: 4053795 (1977-10-01), Cochran

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