Programmable integrated circuit AC resistor network
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United States of America Patent
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Nov 5, 1985
Issued Date -
N/A
app pub date -
Jan 21, 1983
filing date -
Jun 30, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A monolithic integrated circuit D-to-A converter and programmable AC resistor network and current source is disclosed in which an array of FET cells formed on a semiconductor body is divided into a plurality of distinct sets which may be grouped in two groups of corresponding sets. The source and drain regions respectively of all of the cells in each group are connected in common. The gate regions of the cells in each distinct set are also connected. In embodiments comprising two groups of cells, gate control logic is included which may supply signals of opposite binary states respectively to the gate regions of corresponding sets of cells in the two groups.
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