KA2425A Datasheet, PDF (1/6 Pages) Samsung semiconductor – SPEECH NETWORK WITH DIALER INTERFACE

KA2425A
SPEECH NETWORK WITH DIALER INTERFACE
INTRODUCTION
The KA2425A is telephone speech network integrated
circuit which includes transmit amp, receive amp,
side tone amp, DC loop interface function, DTMF input,
voltage regulator for speech, a regulated output voltage
for a dialer, and equalization circuit .
8-DIP-300A
FEATURES
• Low voltage operation (1.5v : speech)
• Transmit, receive, side tone and DTMF level are
controlled by external resistors
• Regulated voltage for dialer
• Loop length equalization
• MUTE function
• Linear interface for DTMF
PIN CONFIGURATION
20-SOP-375
ORDERING INFORMATION
Device
Package Operating Temperature
KA2425B 18-DIP-300A
KA2425AD 20-SOP-375
- 20°C ~ + 60°C
MIC 1
18 MT
TXI 2
17 MS
TXO 3
16 TI
STA 4
15 VDD
CC 5 KA2425A 14 V+
EQ 6
13 LR
RXI 7
12 LC
RXO 8
RMT 9
11 VR
10 V-
Fig. 1