KA8512 Datasheet, PDF (1/6 Pages) Samsung semiconductor – COMPANDOR

KA8512
INTRODUCTION
Compandor is a composite word of compressor and expander.
It is used for maintaining dynamic range and improving
of S/N ratio, and generally called as a noise reduction
system or automatic gain control system.
KA8512 consists of compressor, expander, mic amp,
Iimiter, ALC(automatic level control) and mute logic.
FEATURES
• Operating voltage range : 2 ~ 6V
• Included ALC circuit
• Easy gain control to use external component
• Included mute function
COMPANDOR
14-DIP-300
14-SOP-225B
BLOCK DIAGRAM
EPI
2
15K
10K
CO 12
+
_
125K
ERC
3
RECTIFIER
GAIN CELL
G
VREF
125K
10K
VREF
LIMITER
BIAS CIRCUIT
7 14 1
GND VCC VREF
ORDERING INFORMATION
Device
KA8512
KA8512D
Package
14-DIP-300
14-SOP-225B
Operating Temperature
-20°C ~ + 70°C
EMUTE CMUTE
56
30K
MUTE LOGIC
_
+
SUM AMP
+
_
30K
30K
VREF
24K
10K
15K
GAIN CELL
G
15K
RETIFIER
51K
3.3K
_
+
MIC AMP
ALC
4 EO
9 CPI-
8 CPI+
11 AGIC
13 ALC
10
CRC