ZSCT1555N8 Zetex Semiconductors, ZSCT1555N8 Datasheet - Page 9

• Manufacturer Part Number: ZSCT1555N8
• Description: PRECISION SINGLE CELL TIMER
• Manufacturer: Zetex Semiconductors

Figure 9 gives an easy selection for RA, RB and
C
Similar to the PWM circuit of Figure 5 the astable
circuit can be configured with modulation of the
control input as shown in Figure 10. The result is a
pulse position modulated, PPM, circuit where the
pulse position is altered by the control input voltage.
Figure 9
Figure 10
T
values.
0.001
0.01
100
0.1
10
1
0.1
(RA+2RB)
Free Running Frequency (Hz)
100k
10M
1M
1
10
100
1k
10k
100k
4-319
Figure 11 shows the result of modulation with
a triangle wave input to the control pin.
Figure 11
ZSCT1555