Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2007-02-27
2007-02-27
Mottola, Steven J. (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S258000, C330S260000
Reexamination Certificate
active
10973728
ABSTRACT:
A transconductance amplifier comprising a first input circuit having a first feedback loop; a second input circuit having a second feedback loop; a resistor having a first interface connected to the first input circuit and a second interface connected to the second input circuit; a first differential pair having a first transistor arranged to control current flow in the first feedback loop to maintain a voltage at the first interface of the resistor at substantially a constant voltage relative to an input voltage applied to the first input circuit and a second transistor arranged to control current flow for a first output; and a second differential pair having a third transistor arranged to control current flow in the second feedback loop to maintain a voltage at the second interface of the resistor at substantially a constant voltage relative to an input voltage applied to the second input circuit and a fourth transistor arranged to control current flow for a second output.
REFERENCES:
patent: 5307024 (1994-04-01), Metz et al.
patent: 2003/0052731 (2003-03-01), Kimura
Ismail et al., “Novel CMOS Linearised Balanced Output Transconductance Amplifier Based on Differential Pairs,” Frequenz Schiele und Schon GMBH, Berlin, DE, vol. 53, pp. 170-174, XP000920024.
Towers, “Balanced Transistor D.C. Amplifiers,” Wireless World, IPC Business Press Ltd., Haywards Heath, GB, vol. 74, pp. 269-274, XP001127064.
Miller Ira
Salle Didier
Freescale Semiconductor Inc.
Mottola Steven J.
LandOfFree
Transconductance amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transconductance amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transconductance amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3875676