Digitally programmable transconductance amplifier and...

Details Digitally programmable transconductance amplifier and... Digitally programmable transconductance amplifier and...

2008-08-05

2009-12-22

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including differential amplifier

C330S288000, C330S296000

Reexamination Certificate

active

07636014

ABSTRACT:
The present invention relates to an trans-conductance amplifier, cooperating with a digital programmable current mirrors, can be applied to digital programmable current-mode integrated circuits, voltage control oscillators, adaptive frequency adjust mechanism, adaptive continuous analog filters via the corresponding trans-conductance adaptation controlled by the digital control signals. The present invention disclosed a digital programmable current mirror suitable for the second stage of the trans-conductance amplifier so as to reform the fixed gain trans-conductance amplifier to be digitally programmable.

REFERENCES:
patent: 6456158 (2002-09-01), Giuroiu
patent: 6462527 (2002-10-01), Maneatis
patent: 6466100 (2002-10-01), Mullgrav, Jr. et al.
patent: 6509796 (2003-01-01), Nguyen et al.
patent: 7061309 (2006-06-01), Kato et al.
patent: 7504874 (2009-03-01), Oehm
patent: 2002/0180512 (2002-12-01), Papathanasiou
patent: 2008/0100373 (2008-05-01), Terryn et al.

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