Foley & Lardner LLP
Semiconductor integrated circuit and manufacturing method thereof
A semiconductor integrated circuit including interconnect for connecting a current switch circuit and an emitter follower circuit and a method for producing the semiconductor integrated circuit. A matching between a characteristic impedance of the interconnect and an output impedance of the current switch circuit at its output and also an input impedance of the emitter follower circuit at its input in a predetermined frequency range is conducted to prevent an occurrence of distortion of a waveform of a data signal and a gain peaking of frequency characteristic. An impedance converter circuit can be placed at the input or output of the interconnect to match the characteristic impedance of the interconnect.
NEC Corporation
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Yasushi Yasuyuki Kenichi
Amamiya Suzuki Hosoya