Gain enhancement for operational amplifiers

Details Gain enhancement for operational amplifiers Gain enhancement for operational amplifiers

1998-01-22

1999-09-14

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330257, H03F 345

Patent

active

059528826

ABSTRACT:
Operational amplifiers with a gain enhancement apparatus and method result in a substantial improvement in the gain of such amplifiers without change in the gain of the signal amplifying transistors. The gain enhancement is achieved by providing a circuit for having one transistor in the folded cascode stage of the amplifier substantially track the operating conditions of another transistor in the folded cascode stage, thereby substantially eliminating the unbalanced differential drive from the differential input stage that would have been required to accommodate the Early effect in the second stage. This is particularly advantageous when driving MOS output drivers wherein large voltage excursions in the second stage are required, particularly when sinking current from a load.

REFERENCES:
patent: 5420540 (1995-05-01), Butler

Affiliated with

Also associated with

Rating

Gain enhancement for operational amplifiers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gain enhancement for operational amplifiers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gain enhancement for operational amplifiers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1513795