Semiconductor integrated circuit device
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United States of America Patent
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Feb 14, 2006
Issued Date -
N/A
app pub date -
Sep 24, 2004
filing date -
May 31, 2002
priority date (Note) -
Expired
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Abstract
In a circuit for converting an input signal Data1 of high frequency to an output signal Data4 of low frequency, a signal of the frequency band (for example, 10 GHz to 2.5 GHz) which can be processed only with a bipolar ECL circuit is processed with a bipolar ECL circuit. After the frequency of signal up to the maximum frequency which can be processed with a CMOS circuit is lowered, the signal is inputted to the CMOS circuit via a level conversion circuit in order to lower the frequency (for example, 2.5 GHz to 1.25 GHz). Thereby, power consumption of the semiconductor integrated circuit device, particularly the device including the Bi-CMOS circuit can be lowered while high-seed processing characteristic in the signal process of the circuit is maintained.
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