Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1997-10-21
1999-04-13
Pascal, Robert
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330255, 330261, 330311, H03F 345
Patent
active
058942459
ABSTRACT:
An operational amplifier includes a differential amplifier portion for amplifying input signals and having an amplification path defined by plural series connected first switching devices extending between a supply and a ground, each of said first switching devices having a control input. The operational amplifier further includes an output portion for outputting signals amplified by the amplifier portion and having an output path defined by plural series connected switching devices extending between the supply and the ground, each of the switching devices having a control input and each respectively connected to the control input of said amplification portion. A resistance of the output path is less than a resistance of the amplification path such that a current flow through the amplification path is less than that of the output path. In this manner, power consumption is reduced.
REFERENCES:
patent: 5177450 (1993-01-01), Lee et al.
Nguyen Patricia
Pascal Robert
Samsung Electronics Co,. Ltd.
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