Semiconductor device using transistors having low off-state current
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United States of America Patent
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Oct 1, 2024
Grant Date -
May 11, 2023
app pub date -
Apr 6, 2021
filing date -
Apr 17, 2020
priority date (Note) -
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Abstract
A semiconductor device capable of holding analog data is provided. Two holding circuits, two bootstrap circuits, and one source follower circuit are formed with use of four transistors and two capacitors. A memory node is provided in each of the two holding circuits; a data potential is written to one of the memory nodes and a reference potential is written to the other of the memory nodes. At the time of data reading, the potential of the one memory node is increased in one of the bootstrap circuits, and the potential of the other memory node is increased in the other of the bootstrap circuits. A potential difference between the two memory nodes is output by the source follower circuit. With use of the source follower circuit, the output impedance can be reduced.
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