KA8501A Datasheet, PDF (1/4 Pages) Samsung semiconductor – SPEECH NETWORK WITH DIALER INTERFACE

KA8501A
SPEECH NETWORK WITH DIALER INTERFACE
INTRODUCTION
The KA8501A is a telephone speech network in-
tegrated circuit which includes transmit amp, receive
amp, DTMF amp, voltage regulator, line equalizer,
voltage comparator. It handles the voice signal, perfor-
ming the 2/4 wires interface and changing the gain on
both sending and receiving amplifiers to compensate
the line current. The KA8501A can work in fixed gain
mode.
FEATURES
• Adjusts sending and receiving attenuation length
• Regulated voltage for dialer
• Linear interface for DTMF
• Suitable for ceramic transducers
• Mute function
PIN CONFIGURATION
16-DIP-300A
ORDERING INFORMATION
Device
KA8501A
Package
16-DIP-300A
Operating Temperature
- 45°C ~ + 70°C
MIC1 1
16 MIC2
V+ 2
15 V_DD
MUTING 3
14 MF
BIAS ADJ. ⁴
REGULATOR 5
REGULATOR 6
LINE CURRENT 7
KA8501A
13 RXO2
12 RXO1
11 ^{RXI +}
10 RXI -
ZBAL SWITCH 8
9 V-
Fig. 1