| 摘要 |
PURPOSE:To satisfactorily process the signals in a simple construction by a method wherein differences in the speeds in a current mirror circuit are corrected, in the signal processing circuit adapted to mix up a plurality of signals respectively through the current mirror circuit. CONSTITUTION:In BBD comprising a transistor (Tr) having an input terminal 1, clock terminals 6, 7, NPN type Tr.Q1, Q2... and capacitors C0, C1..., the plurality of the signals are taken out, being mixed up through the current mirror circuit and signal-processed. The current mirror circuit M1 with the P type elements is formed by connecting a collector of the Tr.11 with a base of the PNP type Tr.21, an emitter of the Tr.21 with a collector and base of the PNP type Tr.22, a base of the Tr.23 with a base of the Tr.22, a collector of the Tr.23 with the collector of the Tr.11, and emitters of the Tr.22, 23 with a source terminal 4. In addition, the collector of the Tr.21 is connected to a hot end side of the capacitor C1. |
