GL6840B datasheet(1/8 Pages) HYNIX

No de pièce	GL6840B

Description	Electronic Two Tone Ringer

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Fabricant	HYNIX [Hynix Semiconductor]

Site Internet	http://www.skhynix.com/kor/main.do

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GL6840

1

GL6840A

Electronic Two Tone Ringer

Description

GL6840A 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

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§ Ô

)

continuous

Calling Voltage(f=50§ Ô

)

5s ON/10s OFF

Supply Current

Operating Temperature

Storage Temperature

120Vrms

200Vrms

22§ Ì

-20 to 75¡ É

-65 to 150¡ É

GL6840A

8

5

7

1

2

3

4

6

Buzzer

R1

14§ Ú

C1

100§ Ý

VS

£ «

10§ Þ

VAB Line

1§ Þ 2.2§ Ú

(Top View)

Test Circuit

For GL6840A

3.26 x 104

R

1(§ Ú

)

x (2 - e

)

f

1 =

f

2 = 0.717 x f1

f

sweep =

14 - R

1(

§ Ú

)

95

1000

C

1(§ Ý

)

Numéro de pièce similaire - GL6840B

Fabricant	No de pièce	Fiches technique	Description
Hynix Semiconductor	GL6850	37Kb / 3P	TWO TONE RINGER
Hynix Semiconductor	GL6851	35Kb / 3P	TWO TONE RINGER

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Description similaire - GL6840B

Fabricant	No de pièce	Fiches technique	Description
STMicroelectronics	L3240	123Kb / 6P	ELETRONIC TWO-TONE RINGER Jun-1993
STMicroelectronics	LS1240A	496Kb / 7P	Electronic two-tone ringer 23-Aug-2006
Wing Shing Computer Com...	LS1240A	282Kb / 4P	Electronic Two-Tone Ringer
System Logic Semiconduc...	SL2411	50Kb / 6P	Tone Ringer
Daewoo Semiconductor	DBL5001	317Kb / 6P	TONE RINGER
Hynix Semiconductor	GL6850	37Kb / 3P	TWO TONE RINGER
Hynix Semiconductor	GL6851	35Kb / 3P	TWO TONE RINGER
STMicroelectronics	LS1241	175Kb / 3P	Electronic Two - Tone Ringer
STMicroelectronics	LS1240A	245Kb / 9P	Electronic two-tone ringer 23-Aug-2006
Hangzhou Youwang Electr...	UTC1240A	92Kb / 3P	ELECTRONIC DUAL-TONE RINGER

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GL6840B Fiches technique(PDF) 1 Page - Hynix Semiconductor

GL6840B Fiches technique(HTML) 1 Page - Hynix Semiconductor

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