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參數(shù)資料
| 型號(hào)： | L3240 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | CAP CER 1.5UF 100V 20% X7R 1812 |
| 中文描述： | ELETRONIC雙色鈴聲 |
| 文件頁(yè)數(shù)： | 1/6頁(yè) |
| 文件大小： | 123K |
| 代理商： | L3240 |
L3240
June1993
ELETRONIC TWO-TONE RINGER
.
LOW CURRENT CONSUMPTION, IN ORDER
TOALLOWTHEPARALLELOPERATIONOF4
DEVICES
.
INTEGRATED
ZENER DIODES TO PROTECT AGAINST
OVERVOLTAGES
.
LITTLEEXTERNAL CIRCUITRY
.
TONE AND SWITCHING FREQUENCIES AD-
JUSTABLEBY EXTERNAL COMPONENTS
.
INTEGRATED
HYSTERESIS
.
COMPLEMENTARY OUTPUT CONFIGURA-
TION
RECTIFIER BRIDGE
WITH
VOLTAGE AND CURRENT
DESCRIPTION
L3240is a monolithic integratedcircuit designed to
replace the mechanical bell in telephone sets, in
connectionwithanelectroacousticalconverter.The
devicecandriveeitherdirectlyapiezoceramiccon-
verter (buzzer)or a smallloudspeaker.In this case
a transformer is needed.The two tonefrequencies
generatedareswitched by aninternaloscillatorin a
fast sequenceandmade audibleacrossoutputam-
plifiers inthetransducer;bothtonefrequenciesand
the switching frequencycan be externallyadjusted.
Thesupplyvoltageis obtainedfromtheAC ringsig-
nal and the circuit is designedso thatnoise on the
line or variationsof the ringingsignal cannotaffect
the correct operationof the devices.
Theoutputbridge configurationallows touseahigh
impedancetransducerwith acousticalresults much
betterthanin a singleended configuration.
The two outputs can also be connected inde-
pendently to
different
tors (acoustical, opto,logic).
converters
or
actua-
PIN CONNECTION
( top view)
Minidip
SO8
ORDERINGNUMBERS :
L3240B1 (Minidip)
L3240D1 (SO8)
1/6
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L3240B1 | ELETRONIC TWO-TONE RINGER |
| L3240D1 | ELETRONIC TWO-TONE RINGER |
| L3280 | Low Voltage Telephone Speech Circuit(低壓電話語(yǔ)音芯片) |
| L3281 | LOW VOLTAGE TELEPHONE SPEECH CIRCUITS |
| L3281AB | LOW VOLTAGE TELEPHONE SPEECH CIRCUITS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L3-24009-00 | 制造商:LSI Corporation 功能描述: |
| L3-24009-01 | 制造商:LSI Corporation 功能描述: |
| L3-24026-00 | 制造商:LSI Corporation 功能描述:MR 2208 ROMB TSOC 32PD, R6/ASUS |
| L3-24030-00 | 制造商:LSI Corporation 功能描述:MR 2208 ROMB TSOC / HITACHI |
| L3240B1 | 制造商:STMicroelectronics 功能描述: |
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