Programmable analog array and method for configuring the same
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United States of America Patent
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Oct 21, 1997
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N/A
app pub date -
Feb 5, 1996
filing date -
Feb 5, 1996
priority date (Note) -
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Abstract
A programmable analog array (10) comprises an array (11) of cells, each cell including analog circuitry (12), a switch control circuit (18), and a digital storage element (16). The switch control circuit (18) receives a clock signal and sequentially configures the circuits within the analog circuitry (12) to realize different circuit functions in accordance with configuration data stored in different digital memory units (17A-17D) within digital storage element (16). During a time interval, the analog signals generated by the analog circuitry (12) before that time interval are stored in an analog storage element (14), which is constructed from a portion of a capacitor network (54) in the analog circuitry (12) and is partitioned into a set of analog memory units (56A-56D). Each analog memory unit (56A-56D) stores the analog signal for a corresponding phase of the clock signal.
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