FINITE IMPULSE RESPONSE INPUT DIGITAL-TO-ANALOG CONVERTER
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United States of America Patent
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Issued Date -
Aug 29, 2024
app pub date -
May 3, 2024
filing date -
Nov 3, 2021
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Abstract
A digital-to-analog converter (DAC) may include an integrator, an input network, and control circuitry. The input network may include a plurality of parallel taps, each having a signal delay such that at least two of the signal delays of the members of the plurality of parallel taps are different, and wherein each member is coupled between an input of the digital-to-analog converter and an input of the integrator. The control circuitry may be configured to selectively enable and disable particular members of the plurality of parallel taps in order to program an effective input resistance of the input network to control an analog gain of the DAC, such that the control circuitry enables, substantially contemporaneously, an even number of members at a time in order to increase the analog gain, with half of such enabled members in a first group and half of such enabled members in a second group.
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