Low distortion operational amplifier

Details Low distortion operational amplifier Low distortion operational amplifier

1993-11-01

1995-04-25

Sikes, William L.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330310, 330311, 330300, 330292, H03F 326, H03F 345, H03F 134

Patent

active

054102731

ABSTRACT:
An op-amp comprising a single gain stage amplifier cascaded with a buffer and an output stage. The buffer comprises an amplifier which isolates the gain stage from the output stage to prevent loading of the gain stage and create a more linear op-amp. For frequency compensation, the op-amp utilizes MOSFETs connected in a reversed biased configuration as load compensation capacitors. This technique reduces the non-linear effects of MOSFET gate capacitors utilized in conventional Miller compensation schemes and allows for digital fabrication technology of low distortion, low power supply operational amplifier design.

REFERENCES:
patent: 4484148 (1984-11-01), Weiser et al.
patent: 4559502 (1985-12-01), Huijsing
patent: 5170134 (1992-12-01), Bien

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