| 摘要 |
PURPOSE:To enable to form a pulse signal having optional inclination by using a signal forming device such as a kind of inverter, thereby enabling to make rise and fall speed of a signal equal and to set to desired inclination. CONSTITUTION:Signal forming devices 20c and 20d are constituted in the same way as signal forming device 20a and 20b consisting of constant current sources 11a, 12a or 11b, 12b and MOSFETs Q1a, Q2a or Q1b, Q2b that consist a CMOS inverter connected between power source voltage VDD and VSS with said current sources between. For the constant current source 11a-12b, MOSFET that works as a constant current element by receiving the constant bias voltage in the gate is used, and able to form a signal of optional inclination by changing the magnitude of bias voltage. Above-mentioned signal forming devices 20a- 20d output a signal of inverted input signal, and can be regarded as a kind of inverter. |
