| 摘要 |
PURPOSE:To obtain characteristics of A-curve, D-curve, etc., by changing the combination of resistance values of the final stage of a ladder resistance network. CONSTITUTION:The resistance at the final stage is divided into r1-r4, and they are connected to the output side through each switch. The resistances r1-r4 are fixed to be R/8.3R/8.3R/2.3R, respectively. By controlling the turning on and off of the switches through control data A-D, polygonal line approximation of A-curve or D-curve can be obtained. Moreover, the Sin is analog input, the Sout is analog output, and the Vb is bias voltage. |
