GL6840 데이터 시트보기 (PDF) - Hyundai Micro Electronics

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GL6840

Electronic Two Tone Ringer

Hyundai Micro Electronics 

GL6840

Block Diagram

7

Bridge

8

Diode

Threshold

Detector

Overvoltage

2

Protection

1

5

Sweep Frequency

Tone Generation

Output

Oscillator

Oscillator

Stage

6

3

4

Pin Description

PIN

NAME

DESCRIPTION

1,8

LINE

Input terminals to bridge diode. The AC ringing signal from the

telephone line drives the ringer through bridge.

2

GND

Ground

3

Sweep Rate This pin is connected to external capacitor to control the sweeping

Control Capacitor frequency(fSWEEP)

4

Output Frequency This pin is connected to external resistor to control the two tone

Control Resistor frequency(f1, f2)

5,6

Buzzer

The tone ringer output terminals which have inverse output phase

each others.

7

Rectifier

Capacitor

This pin is connected to external capacitor to change AC ringing

signal into DC voltage.

6

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