(Hong Kong)
Product Summary
The LS1240AL is monolithic integrated circuit and designed to be as a telephone ringer. It can drive a piezo-ceramic converter(buzzer) directly. The output current capacity of LS1240AL is higher than standard ringer. For driving a dynamic loudspeaker, LS1240AL needs only a decoupling capacitor to replace the usual transformer in use.
Parametrics
LS1240AL absolute maximum ratings: (1)Calling Voltage (f=50Hz) Continuous VABθ: 120 Vrms; (2)Calling Voltage (f=50Hz) (5s ON/10s OFF) VAB: 200 Vrms; (3)Supply Current IDC: 30 mA; (4)Operating Temperature TOPR: -40 ~ +70℃; (5)Storage Temperature TSTG: -65 ~ +150℃.
Features
LS1240AL features: (1)Low current consumption; (2)Integrated rectifier bridge with zener diodes to overvoltage Protection; (3)Minimum external circuitry; (4)Both frequencies of tone and switching are adjustable by external components; (5)Integrated voltage and current hysteresis.
Diagrams
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 LS1240A |
STMicroelectronics |
Telephone Ringers Two-Tone Ringer |
Data Sheet |
Negotiable |
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LS1240AD1 |
STMicroelectronics |
Telephone Ringers Two-Tone Ringer |
Data Sheet |
Negotiable |
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LS1240AD1013TR |
STMicroelectronics |
Telephone Ringers Two-Tone Ringer |
Data Sheet |
Negotiable |
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LS125 |
Other |
|
Data Sheet |
Negotiable |
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LS125-100-RM |
Other |
|
Data Sheet |
Negotiable |
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LS125-101-RM |
Other |
|
Data Sheet |
Negotiable |
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