Signal receiving circuit and digital signal processing system
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United States of America Patent
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Mar 9, 1999
Grant Date -
N/A
app pub date -
Feb 27, 1997
filing date -
Jun 13, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A signal receiving circuit comprising a first P-channel MOSFET amplifier and a first N-channel MOSFET amplifier having gates supplied with positive signals from a pair of signal transmission lines; and a second P-channel MOSFET amplifier and a second N-channel MOSFET amplifier having gates supplied with negative signals from said pair of signal transmission lines; wherein a first output signal is formed by so adjusting the gains of the first P-channel MOSFET amplifier and of the second N-channel MOSFET amplifier that the resultant signals have an intermediate amplitude between the operation voltages, and a second output signal is formed by so adjusting the gains of the second P-channel MOSFET amplifier and of the first N-channel MOSFET amplifier that the resultant signals have an intermediate amplitude between the operation voltages. This makes it possible to receive various small signals lying over a wide range even by using a sense amplifier which has only a fixed operation range in the signal receiving circuit as well as to constitute a novel and optimum system by combining semiconductor integrated circuit devices having different low-amplitude interfaces.
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