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參數(shù)資料
| 型號(hào)： | GL6840B |
| 元件分類： | 通信、網(wǎng)絡(luò)模塊及開發(fā)工具 |
| 英文描述： | Telecomm/Datacomm |
| 中文描述： | 電信/數(shù)據(jù)通信 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 64K |
| 代理商： | GL6840B |
GL6840
5
GL6840B
Electronic Two Tone Ringer
Description
GL6840B are monolithic integrated circuits designed
to replace the mechanical bell in telephone sets,
in connection with an electro acoustical converter.
The device can drive either directly a piezo ceramic
converter(buzzer) or a small loudspeaker. In this
case a transformer is needed. The two tone frequen-
cies generated are switched by an internal oscillator
in a fast sequence and made audible across output
amplifiers in the transducer, both tone frequencies
and switching frequency can be externally adjusted.
The supply voltage is obtained from the AC rings
signal and the circuit is designed so that noise on the
line or variations on the ringing signal cannot affect
the correct operation of the devices.
The output bridge configuration allows to use a high
impedance transducer with acoustical results much
better than in a single ended configuration. The two
outputs can also be connected independently to
different converters or actuators(acoustical, opto and
logic)
Features
Low current consumption, in order to allow the
parallel operation of 4 devices
Integrated rectifier bridge with zener diodes to
protect against overvoltages
Little external circuitry
Tone and switching frequencies adjustable by
external components
Integrated voltage and current hysteresis
Bridge output configuration
Pin Configuration
Line
Rectifier
capacitor
Buzzer
Buzzer
Output freq.
Control resistor
Sweep rate
control capacitor
GND
Line
1
2
3
4
8
7
6
5
Absolute Maximum Ratings
Calling Voltage(f=50
§
)
continuous
Calling Voltage(f=50
§
)
5s ON/10s OFF
Supply Current
Operating Temperature
Storage Temperature
120Vrms
200Vrms
22
§ ì
-20 to 75
é
-65 to 150
é
GL6840B
2
8
5
7
1
3
4
6
Buzzer
R
1
39
§ ú
C
1
100
§ Y
V
S
￡
10
§ T
V
AB
Line
1
§ T
2.2
§ ú
G
(Top View)
Test Circuit
For GL6840B
3.32 x 10
4
R
1
(
§ ú
)
x (2 - e )
f
1
=
f
2
= 0.717 x f
1
f
sweep
=
1
1000
C
1
(
§ Y
)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GL6850 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:TWO TONE RINGER |
| GL68501 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:TWO TONE RINGER |
| GL6851 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:TWO TONE RINGER |
| GL6962 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:Low Voltage Universal Speech Network |
| GL6962/A | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:Auto Gain Control |
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