Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1978-12-08
1980-08-26
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330260, H03F 345
Patent
active
042197821
ABSTRACT:
A unity gain amplifier circuit is disclosed which is responsive to an input signal being applied thereto for sourcing current to an output terminal for driving a load. The unity gain amplifier comprises a differential amplifier having first and second differential inputs at which one input thereof the input signal is applied. A current mirroring circuit is provided for producing balance current drive to the differential amplifier and which is coupled to the output thereof. The output of the differential amplifier provides base drive current to a NPN transistor which is coupled in cascode configuration to a PNP transistor. In response to the input signal being applied to the input of the differential amplifier current is sourced from the collector electrode of the PNP transistor for providing both sourcing current at the output of the unity gain amplifier and for establishing feedback to the second input of the differential amplifier such that unity gain is established.
REFERENCES:
patent: 3077566 (1963-02-01), Vosteen
patent: 3932768 (1976-01-01), Takahashi et al.
Ahmed "Zeno-Offset Potential Follower Circuits" RCA Technical Notes, TN No. 938, Sheets 1-7, Oct. 2, 1973.
Bingham Michael D.
Motorola Inc.
Mullins James B.
LandOfFree
Unity gain amplifier for sourcing current to a capacitive load o does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Unity gain amplifier for sourcing current to a capacitive load o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unity gain amplifier for sourcing current to a capacitive load o will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1307479