KA2181
REMOTE CONTROL PREAMPLIFIER
REMOTE CONTROL PREAMPLIFIER
The KA2181 is a silicon monolithic integrated circuit
designed for a remote control preamplifier of infrared
signals. This device has features of low power, high
sensitivity and wide supply voltage.
8-SIP
FUNCTIONS
•
AMP
•
ABLC
•
LIMITER & LEVEL SHIFT
•
PEAK DET
•
SHAPING
FEATURES
•
Wide operation voltage
V
CC
=6 to 14.4V
•
Low power consumption
I
CC
=2.5mA Typ.
ORDERING INFORMATION
•
High input sensitivity
50µV
P-P
Typ.
•
Peak detector
Device Package Operating Temperature
•
Small size package
8-SIP
KA2181
8-SIP
-20°C ~+75°C
•
A minimum number of parts are required
•
Designed for use with the KS5803 remote control transmitter IC.
BLOCK DIAGRAM
+
VCC
6 ~14.4V
+
Tuning Coil
Peak Hold Capacitor
3
BIAS
Input
Limiter &
Level shift
PIN-Photo
Diode
4
8
Power Supply
ABLC
6
By-pass Capacitor
5
Ground
Shaping
7
AMP
Peak DET
1
Output
2
Integral Capacitor
+
Fig. 1
SAMSUNG [ SAMSUNG SEMICONDUCTOR ]
