KA8504 Просмотр технического описания (PDF) - Samsung

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KA8504

SPEECHNETWORK WITH DIALER INTERFACE

Samsung 

KA8504

SPEECH NETWORK WITH DIALER INTERFACE

INTRODUCTION

The KA8504 is a telephone speech network which includes TX Amp,

RX Amp and DTMF Amp.

The gain is controlled automatically by sensing the line current. The

circuit internally performs electronic switching between dialing and

speech by mute signal.

16-DIP-300A

FEATURES

• Low line current operation

• Mute function

• DTMF signal interface

• Easy gain control

BLOCK DIAGRAM

ROF

14

RXI 13

RX INPUT

AMP

RX GAIN

CONTROL

GC 12

GAIN

CONTROLLER

ORDERING INFORMATION

Device

KA8504

Package

16-DIP-300A

Operating Temperature

- 40°C ~ + 85°C

RX OUTPUT

AMP

15 RXO

5 MF

VL 1

TX AMP

2

CI

TX GAIN

CONTROL

TX AMP

3

6

9

CO

MUTE

TOF

Fig. 1

10 MIC+

11 MIC-

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