| 摘要 |
PURPOSE:To produce the output voltage integrating the input voltage to the capacitor, by discriminating the input voltage level and repeating the switch-on operation by supplying positive or negative constant current depending on this level to the capacitor with switching. CONSTITUTION:The capacitor 27 is charged with the constant current source 29 at the ON period DELTAT of the sampling gate circuit 25. Accordingly, taking the value of the capacitor 27 as C, the changing value DELTAQ of charge produced by ON of the sampling gate 25 once and the changing value DELTAV of the output voltage are as shown in equation. Accordingly, taking the output voltage required to reject ghost as Vc, the number of integration M=Vc/DELTAV is obtained and the required time for the end of integration is TM=TXM. |
