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UTC1240AのメーカーはHangzhou Silan Microelectronicsです、この部品の機能は「Electronic Dual Tone Ringer」です。 |
部品番号 | UTC1240A |
| |
部品説明 | Electronic Dual Tone Ringer | ||
メーカ | Hangzhou Silan Microelectronics | ||
ロゴ | |||
このページの下部にプレビューとUTC1240Aダウンロード(pdfファイル)リンクがあります。 Total 3 pages
www.DataSheet4U.com
UTC1240A
LINEAR INTEGRATED CIRCUIT
ELECTRONIC DUAL-TONE RINGER
DESCRIPTION
The UTC1240A are monolithic integrated circuits designed
to replace the mechanical bell in telephone sets in connection
with an electro-acoustical converter.Both devices can drive
directly a piezoceramic converter (buzzer).
The output of UTC1240A needs a decoupling capacitor.
No current limitation is provided on the output stage of
UTC1240A,so a minimum load DC of 50 ohms is adviced.
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 lin or
variations of the ringing signal cannot affect correct operation
of the device.
DIP-8
FEATURES
* Low current consumptioin,in order to allow the parallel
* Little external circuitry.
operation of 4 devices.
* Tone and switching frequencies adjustable
* Integrated rectifier bridge with zener dDioadetsaStohpereotte4cUt .com by external components.
against overvoltage.
* Intergrated voltage and current hysteresis
TEST CIRCUIT
1F 2.2k¡
85
VAB 7 UTC1240A RL Vout
10F
f1= 27200
R1(k¡
1 23
4
R1
C1 14k¡
100nF
f2=0.725f1
f ( SWEEP )=
750
C1(nF)
DataShee
YOUW ANG ELECTRONICS CO.LTD
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UTC1240A
LINEAR INTEGRATED CIRCUIT
PIN CONFIGURATION
LINE 1
GROUND 2
SWEEP RATE CONTROL
CAPACITOR
3
OUTPUT FREQUENCY 4
CONTROL RESISTOR
8 LINE
7
RECTIFIER
CAPACITOR
6 NULL
5 BUZZER
TYPICAL APPLICATION
1F 2.2k¡
1F 2.2k¡
85
LINE
7 UTC1240A
10F
1
23
4
R1
C1 14k¡
100nF
BUZZER
LINE
ZloadD>1ka¡taSheet4U.com
85
CL
7 UTC1240A
10F
1
23
4
R1
C1 14k¡
100nF
Figure.1
Figure.2
YOUW ANG ELECTRONICS CO.LTD
DataSheet4U.com
DataSheet4 U .com
3
3Pages | |||
ページ | 合計 : 3 ページ | ||
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PDF ダウンロード | [ UTC1240A データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
UTC1240A | Electronic Dual Tone Ringer | Hangzhou Silan Microelectronics |