Common-mode robust high-linearity analog switch

Details Common-mode robust high-linearity analog switch Common-mode robust high-linearity analog switch

2011-03-01

2011-03-01

Choe, Henry K (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S009000

Reexamination Certificate

active

07898329

ABSTRACT:
A differential gain stage includes a plurality of programmable passive circuit component arrays operable to set a gain of the gain stage. The gain stage also includes an active switch gate control circuit and a passive switch gate control circuit. The active switch gate control circuit controls a gate voltage applied to transistor switch components of each programmable passive circuit component array as a function of the level of common mode disturbance input to the differential gain stage for common mode frequencies below a particular frequency threshold. The passive switch gate control circuit controls the gate voltage applied to the transistor switch components as a function of the level of common mode disturbance for common mode frequencies above the frequency threshold. The differential gain stage can for part of a receiver such as an xDSL receiver.

REFERENCES:
patent: 6674679 (2004-01-01), Perner et al.
patent: 7368968 (2008-05-01), Lai et al.
patent: 7391201 (2008-06-01), Ji
patent: 2009/0195305 (2009-08-01), Ballarin et al.
patent: 10246776 (2004-05-01), None

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