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參數資料
| 型號： | L3240B1 |
| 廠商： | 意法半導體 |
| 英文描述： | ELETRONIC TWO-TONE RINGER |
| 中文描述： | ELETRONIC雙色鈴聲 |
| 文件頁數： | 1/6頁 |
| 文件大小： | 123K |
| 代理商： | L3240B1 |
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PDF資料 |
PDF描述 |
|---|---|
| L3240D1 | ELETRONIC TWO-TONE RINGER |
| L3280 | Low Voltage Telephone Speech Circuit(低壓電話語音芯片) |
| L3281 | LOW VOLTAGE TELEPHONE SPEECH CIRCUITS |
| L3281AB | LOW VOLTAGE TELEPHONE SPEECH CIRCUITS |
| L3281AD1 | LOW VOLTAGE TELEPHONE SPEECH CIRCUITS |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L3240D1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ELETRONIC TWO-TONE RINGER |
| L324-155.52 | 制造商:CONNOR-WINFIELD 制造商全稱:Connor-Winfield Corporation 功能描述:5.0x7.0mm Surface Mount LVDS Clock Oscillator Series |
| L324A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:QUADRUPLE OPERATIONAL AMPLIFIERS |
| L324AM-315 | 功能描述:ANTENNA RUBBER DUCK 315MHZ SMA RoHS:是 類別:RF/IF 和 RFID >> RF 天線 系列:324 標準包裝:1 系列:* |
| L324AM-434 | 功能描述:ANTENNA RUBBER DUCK 434MHZ SMA RoHS:是 類別:RF/IF 和 RFID >> RF 天線 系列:324 標準包裝:1 系列:* |
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