Circuits with improved power supply rejection

Details Circuits with improved power supply rejection Circuits with improved power supply rejection

2006-07-11

2006-07-11

Maung, Nay (Department: 2643)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S298000, C455S313000, C455S317000, C455S323000, C455S333000, C327S113000

Reexamination Certificate

active

07076229

ABSTRACT:
Circuit comprising a noise suppressing circuitry (40) having an input (42) for a first voltage (VDD) and an output (43) for providing a supply voltage (VDDfiltered). The circuit further comprises a MOSFET-based switch (41) with a MOSFET (MP) being situated in a well, whereby a supply voltage (VDDfiltered) is applied to the well (67). The first voltage (VDD) is a global voltage used elsewhere in the same circuit, and the supply voltage (VDDfiltered) is less-noisy than the first voltage (VDD).

REFERENCES:
patent: 5029238 (1991-07-01), Gehr
patent: 6360090 (2002-03-01), Holcombe et al.

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