Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2008-05-15
2009-08-18
Nguyen, Patricia (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
C330S301000, C330S261000, C341S145000
Reexamination Certificate
active
07576608
ABSTRACT:
An amplifier circuit with a voltage interpolation function includes an N-type differential pair and a P-type differential pair. The N-type differential pair includes a first transconductance value, and has a first differential input terminal coupled to a first voltage and a second differential input terminal coupled to a voltage output terminal. The P-type differential pair includes a second transconductance value, and has a first differential input terminal coupled to a second voltage and a second differential input terminal coupled to the voltage output terminal. The N-type differential pair and the P-type differential pair are further coupled to the voltage output terminal through an output stage, and voltages outputted by the voltage output terminal are interpolation results of the first voltage and the second voltage weighted by the first transconductance value and the second transconductance value.
REFERENCES:
patent: 5640163 (1997-06-01), Nauta et al.
patent: 6445248 (2002-09-01), Gilbert
patent: 7368990 (2008-05-01), Tsuchi
patent: 7382190 (2008-06-01), Gilbert
patent: 7443234 (2008-10-01), Iriguchi
Hsu Winston
Nguyen Patricia
NOVATEK Microelectronics Corp.
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