Level-shifting differential amplifier

Details Level-shifting differential amplifier Level-shifting differential amplifier

2007-01-15

2008-12-09

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C326S068000, C326S081000

Reexamination Certificate

active

07463078

ABSTRACT:
An analog level-shifting differential amplifier for providing signal amplitude and/or common mode adjustment is disclosed. In one example, a receiver system may include a first amplification stage that is powered, for example, via an I/O power supply (e.g., VDDIO) and a second amplification stage that is powered, for example, via a core logic power supply (e.g., VDD). Arranged between the first and second amplification stages may be the analog level-shifting differential amplifier. The analog level-shifting differential amplifier may include a set of variable impedance elements for controlling the output common mode and output signal swing of the level-shifting differential amplifier.

REFERENCES:
patent: 6396329 (2002-05-01), Zerbe
patent: 6639427 (2003-10-01), Dray et al.
Cutler, Phillip, “Linear Electronic Circuits with Illustrative Problems,” 1972, pp. 14-15.

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