| 摘要 |
A multiplier includes first through fourth transistors (Q1, Q2, Q3, Q4) and a current source (I0). The first transistor has a base electrode connected to a first input terminal (T1) and a collector electrode connected to a first output terminal (T5). The second transistor has a base electrode connected to a second input terminal (T2) and a collector electrode connected to a second output terminal (T6). The third transistor has a base electrode connected to a third input terminal (T3) and a collector electrode connected to the second output terminal. The fourth transistor has a base electrode connected to a fourth input terminal (T4) and a collector electrode connected to the first output terminal. Supplied with voltages of V1 and V2, a voltage supplying circuit produces and supplies voltages of (1/2)V1, (-1/2)V1, {(1/2)V1 - V2}, and {(-1/2)V1 - V2} to the input terminals. The output terminals are supplied with first and second output currents. <IMAGE> |
