參數(shù)資料
型號(hào)： LT1684
廠商： Linear Technology Corporation
英文描述： Micropower Ring Tone Generator
中文描述： 微鈴聲發(fā)生器
文件頁(yè)數(shù)： 1/16頁(yè)
文件大?。?/td> 221K
代理商： LT1684
1
LT1684
Micropower
Ring Tone Generator
I
Allows Dynamic Control of Output Frequency,
Cadence, Amplitude and DC Offset
I
Active Tracking Supply Configuration Allows Linear
Generation of Ring Tone Signal
I
No High Voltage Post-Filtering Required
I
Capacitive Isolation Eliminates Optocouplers
I
Low Distortion Output Meets International
PTT Requirements
I
Differential Input Signal for Noise Immunity
I
User Adjustable Active Output Current Limit
I
Powered Directly From High Voltage Ringer
Supply—No Additional Supplies Necessary
I
Supply Current: <1mA
I
2% Signal Amplitude Reference
I
Available in 14-Pin SO and DIP Packages
The LT
1684 is a telecommunication ring tone generator.
The IC takes a user-generated pulse width modulated
(PWM) input and converts it to a high voltage sine wave
suitable for telephone ringing applications.
The LT1684 receives capacitor-isolated differential PWM
input signals encoded with desired ring output cadence,
frequency, and amplitude information. The LT1684 nor-
malizes the pulse amplitude to
±
1.25V for an accurate
signal voltage reference. The cadence, frequency and
amplitude information is extracted using a multiple-
pole active filter/amplifier, producing the output ring tone
signal.
The LT1684 uses its own ring tone output as a reference
for generating local supply rails using complementary
high voltage external MOSFETs as dynamic level-shifting
devices. This “active tracking” supply mode of operation
allows linear generation of the high voltage ring tone
signal, reducing the need for large high voltage filtering
elements.
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Wireless Local Loop Telephones
I
Key System/PBX Equipment
I
Fiber to the Curb Telecom Equipment
IN A
GATE
+
IN B
6.8nF
IRF9610
IRF610
100k
V
+
P1
μ
C
P2
LIM
+
OUT
AT
REF
COMP1
BG
OUT
COMP2
LIM
–
AMPIN
V
–
GATE
–
100pF
1N4001
20pF
100pF
100pF
DC
ISOLATION
PWM
CONTROLLER
100
10k
10k
1N5817
0.1
μ
F
1
μ
F
3k
5k
2k
300k
6.8nF
100k
100
RING TONE
OUTPUT
±
100mA
CAPABILITY
100V
+
–
–100V
LT1684
4700pF
1684 TA01
FB1
(
)
FB1: FERRONICS FMB1601
(716) 388-1020
FEATURES
DESCRIPTIOU
APPLICATIU
TYPICAL APPLICATIO
U
Electrically Isolated Ring Tone Generator
相關(guān)PDF資料
PDF描述
LT1684CN Micropower Ring Tone Generator
LT1684CS Micropower Ring Tone Generator
LT1684IN Micropower Ring Tone Generator
LT1684IS Micropower Ring Tone Generator
LT1715 4ns, 150MHz Dual Comparator with Independent Input/Output Supplies
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT1684CN 功能描述:IC RING TONE GENERATOR 14-DIP RoHS:否 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
LT1684CN#PBF 功能描述:IC RING TONE GENERATOR 14-DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
LT1684CS 功能描述:IC RING TONE GENERATOR 14-SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
LT1684CS#PBF 功能描述:IC RING TONE GENERATOR 14-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
LT1684CS#TR 功能描述:IC GENERATOR RING TONE 14SOIC RoHS:否 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:*
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