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LS1240A-S08-R(2005) View Datasheet(PDF) - Unisonic Technologies

Part Name
Description
Manufacturer
LS1240A-S08-R
(Rev.:2005)
UTC
Unisonic Technologies UTC
LS1240A-S08-R Datasheet PDF : 5 Pages
1 2 3 4 5
LS1240A
TYPICAL APPLICATION CIRCUIT
1 µF 2.2k
LINEAR INTEGRATED CIRCUIT
8
5
CL
LINE
7
UTC LS1240A
10 µF
1
23
4
R1
C1 14k
100nF
RL=50to
1000
No current limitation is provided on the output stage of UTC LS1240A, so a minimum load DC of 50 ohms is
advised.
The two tone frequencies generated are switched by an internal oscillator in a fast sequence and made audible
across an output amplifier in the loudspeaker, both tone frequencies and the switching frequency can be externally
adjusted. The signal and the circuit is designed so that noise on the line or variations of the ringing signal cannot
affect correct operation of the device.
UTC assum es no responsibility for equipm ent failures that result from using products at values that
exceed, even m om entarily, rated values (such as m axim um ratings, operating condition ranges, or
other param eters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or system s where
m alfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The inform ation
presented in this docum ent does not form part of any quotation or contract, is believed to be accurate
and reliable and m ay be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 5
QW-R108-002,H
 

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