| 摘要 |
PURPOSE:To realize a MOS four-quadrant multiplier which is formed in a semiconductor integrated circuit with a linear operation. CONSTITUTION:A system is constituted of an octotail cell which is driven by one tail current and to which eight transistor sources are commonly connected, a part of two two-quadrant multipliers is constituted of the respective sour transistors which constitute the octotail cell, a first input signal is adopted as a common input in the two two-quadrant multipliers, the positive phase of the second input signal is inputted to the tuning voltage of one two-quadrant multiplier, the opposite phase of the second input signal is inputted to the tuning voltage of the other two-quadrant multiplier and an output is cross-connected. |
