Method and circuit for controlling amplification

Details Method and circuit for controlling amplification Method and circuit for controlling amplification

2008-01-15

2008-01-15

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including gain control means

C330S129000, C330S133000

Reexamination Certificate

active

07319363

ABSTRACT:
This invention relates to a method for controlling an amplification within a receiver. The gain of a variable gain amplifier which amplifies an input signal to obtain a gain-controlled signal is set. Said gain controlled signal is analog-to-digital converted. Thereby digital words are generated. Each digital word has a value out of a plurality of possible digital values. Digital words having a value within a first and a second subset of the possible digital values are counted in order to generate a first and a second counter value. The gain is set in accordance with the first and second counter values in a fashion that all counter values are as equal as possible. Furthermore, this invention is related to a circuit to be used within a receiver for adjusting the gain of a variable gain amplifier in order to ensure a proper analog-to-digital conversion.

REFERENCES:
patent: 5680075 (1997-10-01), Sacca
patent: 6417730 (2002-07-01), Segallis et al.
patent: 6657488 (2003-12-01), King et al.
patent: 6753727 (2004-06-01), Magoon et al.

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