Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1981-12-30
1984-07-03
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330253, 330257, 330261, 330294, H03F 345
Patent
active
044582129
ABSTRACT:
A circuit for producing a compensated output signal includes a first and second stage of amplification (18) and (20) and a compensation circuit (16). The first stage of amplification (18) has a signal input, a signal output and a control input. The second stage of amplification (20) also has a signal input, a signal output and a control input with the signal input of the second stage (20) connected to the signal output of the first stage (18). A passive feedback network comprised of a series connected resistor (R.sub.F) and capacitor (C.sub.F) is connected between the signal input and the signal output of the second stage (20). The combination of the passive feedback network, the first stage (18) and the second stage (20) provide a gain and frequency response that is defined by three poles and one zero. The zero overlaps one of the poles thereby providing an extended frequency response. The passive feedback network varies the frequency response in response to manufacturing process variations. A compensation network (16) is connected to the control inputs of the first and second stages (18) and (20). The output of the compensation network (16) varies in response to manufacturing process variations and compensates the variation of the frequency response due to the feedback network, thereby providing an amplifier having a frequency response independent of manufacturing process variations.
REFERENCES:
patent: 4379267 (1983-04-01), Young
Brehmer Kevin E.
Fisher John A.
Mostek Corporation
Mullins James B.
LandOfFree
Compensated amplifier having pole zero tracking does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compensated amplifier having pole zero tracking, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compensated amplifier having pole zero tracking will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1632490