| 摘要 |
<P>PROBLEM TO BE SOLVED: To stabilize an operation of a current mode logic gate and to achieve a high speed of a switching speed. <P>SOLUTION: A circuit system 30 is provided with a logic circuit 32 and a switching speed reference circuit 84. The logic circuit 32 includes one or more current mode logic gates which can operate to generate an output voltage amplitude by operating a tail current individually by each current mode logic gate. A bias current adjusting circuit 36 adjusts a reference current I<SB>ref</SB>based on a compared result of an intrinsic switching speed of the logic circuit 32 detected by the switching speed reference circuit 84 with a reference clock frequency f<SB>ref</SB>. A bias generator 34 controls a load resistance and the tail current of the logic circuit 32 based on the reference current I<SB>ref</SB>. <P>COPYRIGHT: (C)2004,JPO |
