KA2418 datasheet(2/3 Pages) WINGS

Il numero della parte	KA2418

Spiegazioni elettronici	TELEPHONE TONE RINGER WITH BRIDGE DIODE

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Produttore elettronici	WINGS [Wing Shing Computer Components]

Homepage	http://www.wingshing.com/en

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2 / 3 page

DC ELECTRICAL CHARATERISTICS (T

A=25℃

℃

℃)

Symbol

Characteristics

Min.

Typ.

Max.

Units

Test Conditions

V

CC

Supply Voltage

26

V

I

CC

Current Consumption Without load

1.5

1.8

mA

V

CC=8.8 to 26V

V

ON

Activation Voltage

12.2

13

V

ONR

Activation Voltage Range

8

10

V

R

A=1KΩ

V

SUS

Sustaining Voltage

8

8.8

V

R

D(OFF)

Different

Resistance

in

OFF

Condition

6.4

KΩ

V

O(P-P)

Output Voltage Swing

V

CC-3

V

I

SC

Short Circuit Current

35

mA

V

CC=26V

TEST AND APPLICATION CIRCUIT

DESCRIPTION

The WS2418 tone ringer device its power supply by rectifying the AS ringing signal. It uses this

power to activate two tone generators. The two tone frequencies generators are switched by an internal

oscillator in a fast sequence and made audible across an output amplifier in the loudspeaker, both tone

frequencies and the switch frequency can be externally adjusted

The devices can driver either directly a piezo ceramic converter (buzzer) or small loudspeaker. In case

of using a loudspeaker, a transformer is need.4

An internal shunt voltage regulator provides DC voltage to the output stage, low frequency oscillator,

and high frequency oscillator. To protect the IC telephone line transients, a zener diode is include.

TEL LINE

RING

TIP

C

3

33

3

10 F

1 F,250V

AC

2.2K

R

A

10K

12K

R

1

11

1

100nF

C

1

11

1

0.22 F

V

OUT

Piezo

1300 :8

1

11

1

2

22

23

33

34

44

4

7

77

7

8

88

85

55

5

6

66

6

WS2418

V

CC

R

2

22

2

C

2

22

2

ffff

1

11

1=

=

, f

2

22

2=

=

1.75

1.75....10

10

104444

R

1

11

1 (K

)

(K )

5

55

5

7

77

7

ffff

1

11

1, f

, f

S

S=

=

800

C

1 (nF )

AC ELECTRICAL CHARACTERISTICS

Symbol

Characteristic

Min.

Typ.

Max.

Units

Test Conditions

V

CC=26V, R1=14KΩ

F

H1

2300+300

V

C=0V(PIN3)

F

H2

Output Frequency

1700+300

H

Z

V

C=6V(PIN3)

f

H1R

f

H1 Range

0.1

15

KHz

R

1=27KΩ To 1.7KΩ

f

S

Sweep Frequency

8

H

Z

R

1=14KΩ,C1=100nF

WS2418

TELEPHONE TONE

RINGER WITH BRIDGE DIODE

1000

3.22X

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