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參數(shù)資料
| 型號(hào)： | LS1240A-S08-T |
| 廠商： | UNISONIC TECHNOLOGIES CO LTD |
| 元件分類(lèi)： | 無(wú)繩電話/電話 |
| 英文描述： | ELECTRONIC TONE RINGER WITH BUILT-IN BRIDGE RECTIFIER |
| 中文描述： | TELEPHONE RINGER CKT, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁(yè)數(shù)： | 5/5頁(yè) |
| 文件大?。?/td> | 228K |
| 代理商： | LS1240A-S08-T |
LS1240A
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 5
QW-R108-002,H
TYPICAL APPLICATION CIRCUIT
2.2k
1
μ
F
10
μ
F
C1
100nF
R1
14k
LINE
8
5
7
1
2
3
4
CL
RL=50
to
1000
UTC LS1240A
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 assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) 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 systems where
malfunction 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 information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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