Systems and methods for enhancing charge transfer amplifier gain
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United States of America Patent
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Mar 12, 2002
Issued Date -
N/A
app pub date -
Jul 18, 2000
filing date -
Nov 30, 1999
priority date (Note) -
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Abstract
A charge transfer amplifier includes a first stage charge transfer amplifier coupled to a positive capacitive feedback mechanism. The positive capacitive feedback mechanism is attached to the output terminal of a first stage charge transfer amplifier. This reduces the capacitance viewed at the output terminal of the first stage charge transfer capacitor thus increasing the overall gain of the charge transfer amplifier. The positive capacitive feedback mechanism includes a second stage amplifier having an output terminal capacitively coupled back to the output terminal of the first stage charge transfer amplifier. The coupling of the positive capacitive feedback mechanism to the charge transfer amplifier allows for enhanced amplifier gain while still retaining the beneficial characteristics of charge transfer amplifiers generally.
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