HA17901A_15 Datasheet, PDF (12/18 Pages) Renesas Technology Corp – Quadruple Comparators

HA17901A Series
2. Pulse Generator
The charge and discharge circuits in the circuit from figure 1 are separated by diodes in this circuit. (See figure 3.)
This allows the pulse width and the duty cycle to be set independently. Figure 4 shows the waveforms generated by
this circuit.
V_CC
R₁ 1 M D₁ IS2076
R₂ 100 k D₂ IS2076
C
−
V_CC
80 pF
HA17901A
V_CC
+
1M
Vout
1M
1M
Figure 3 Pulse Generator
Horizontal: 2 V/div, Vertical: 20 µs/div, V_CC = 5 V Horizontal: 5 V/div, Vertical: 20 µs/div, V_CC = 15 V
Figure 4 Operating Waveforms
Rev.1.00 Mar 10, 2006 page 10 of 15