| 摘要 |
PURPOSE:To provide the multiplying circuit which can execute multiplication of a small scale and high accuracy, and also, can execute highly accurate analog-to-digital multiplication. CONSTITUTION:By setting a digital input voltage as a switching signal, whether an analog input voltage X is generated in an output terminal Tout or not is controlled, and with respect to digital input signals B0, B1, B2, B3, B4, B5, B6 and B7 of plural bits, plural multiplying circuits M0, M1, M2, M3, M4, M5, M6 and M7 are provided in parallel, outputs VOout, V1out, V2out, V3out, V4out, V5out, V6out and V7out of each multiplying circuit are integrated by capacity coupling CP, and in this capacity coupling, weight corresponding to weight of digital input voltages B0, B1, B2, B3, B4, B5, B6 and B7 of each multiplying circuit is given. |
