SEMICONDUCTOR DEVICE
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United States of America Patent
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N/A
Issued Date -
Sep 22, 2016
app pub date -
Mar 14, 2014
filing date -
Mar 21, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
[Problem] To provide an input receiver making it possible to obtain adequate gain with respect to a broad reference potential level. [Solution] The present invention is provided with a differential circuit (110) and a current-supplying circuit (120). The differential circuit (110) includes a first input terminal to which a reference potential VREF is fed, and a second input terminal to which an input signal DQ is fed, the differential circuit (110) generating an output signal based on the difference in potential between the reference potential VREF and the input signal DQ. The current-supplying circuit (120) feeds an actuating current to the differential circuit (110). The actuating current includes the sum of first and second actuating currents. The current-supplying circuit (120) includes a common-mode feedback circuit (CMFB) and an assist circuit (TA). The common-mode feedback circuit (CMFB) changes the first actuating current in accordance with the level of the reference potential VREF. The assist circuit (TA) feeds a fixed amount of the second actuating current irrespective of the level of the reference potential VREF. It is thereby possible to obtain adequate gain with respect to a broad reference potential VREF level.
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