Variable gain stage having same input capacitance regardless...

Details Variable gain stage having same input capacitance regardless... Variable gain stage having same input capacitance regardless...

2011-06-14

2011-06-14

Ometz, David L (Department: 2622)

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

C348S255000, C341S122000, C330S278000

Reexamination Certificate

active

07961127

ABSTRACT:
A programmable gain amplifier (PGA) includes a sample-and-hold (S&H) stage which provides an input capacitance value for storing a charge. The PGA also includes an amplifying stage, which has a gain dependent on the input capacitance value. The amplifying stage is configured to provide a variable gain, while the S&H stage is configured to provide a substantially constant input capacitance value, regardless of the gain.

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PCT/US2008/005826, filed Jul. 5, 2008, International Search Report issued Jun. 13, 2008, pp. 1-3.
PCT/US2008/005826, filed Jul. 5, 2008, Written Opinion of the International Searching Authority, issued Jun. 13, 2008, pp. 1-6.

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