Operational amplifier switchable to different configurations

Details Operational amplifier switchable to different configurations Operational amplifier switchable to different configurations

1995-10-31

1997-04-15

Mottola, Steven

Amplifiers

Combined with automatic amplifier disabling switch means

330 86, H03F 114

Patent

active

056213530

ABSTRACT:
A circuit assembly for an operational amplifier has an input stage with first and second input terminals and an output terminal. An output stage has a first input terminal coupled to the output terminal of the input stage, a second input terminal, and an output terminal. A feedback circuit is coupled between the output terminal of the output stage and the second input terminal of the input stage. An interconnection circuit is coupled to the first and second input terminals and the output terminal of the output stage and to a reference voltage source. The interconnection circuit has first, second, and third modes, such that the second input terminal of the output stage is coupled to the reference voltage source when the interconnection circuit is in the first mode. The first input terminal of the output stage is coupled to the reference voltage source when the interconnection circuit is in the second mode, and the first input terminal of the output stage is coupled to the output terminal of the output stage and the second input terminal of the output stage is coupled to the reference voltage source when the interconnection circuit is in the third mode.

REFERENCES:
patent: 5191296 (1993-03-01), Novelli
patent: 5363062 (1994-11-01), Nebuloni et al.

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