LMV393

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

7 of 11

www.unisonic.com.tw

QW-R104-004,A

APPLICATION CIRCUITS(Cont.)

Free Running Multivibrator

This oscillator circuit can generate a train of stable clock for precise timekeeping applications. We can obtain it by

using a resonator as the feedback component. A quartz crystal in its series-resonant mode can make the circuit

frequency. When choose crystal, be sure to order series resonant with desired temperature coefficient.

Pulse generator with variable duty cycle:

frequency of the generator.

The pulse width and time between pulses can be found from:

14 1

)

tR C

VV

e

−

=−

Rise time

25 1

1max

tR C

VV

e

−

=

Fall time

Where

max

2

3

CC

V

V

=

And

max

1

33

CC

VV

V

==

then

14 1

1

2

tR C

e

−

=

25 1

1

2

tR C

e

−

=