| 摘要 |
PURPOSE:To make the chip area narrow, so as to be more suitable for instegration by sufficing the title structure with a narrow logic construction of layout by providing the land for a transistor as a constant current source without providing a land of the load resistor of a transistor. CONSTITUTION:The first and forth resistors R1 and R4 as the base current restraining resistors are formed in the same land L1' as that for the first and second transistors TR1 and TR2. The third and sixth resistors R3 and R6 as said restraining resistors are formed in the same land L3' as that for the third and forth transistors TR3 and TR4. The fifth transistor TR5 as the constant current source is formed in the second land L2'. This fifth transistor TR5 supplies each of the transistors TR1-TR4 with the constant current on the basis of a control signal impressed on the input terminal CT for the signal. |
