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.

FUNCTIONS

• AMP • ABLC • LIMITER & LEVEL SHIFT

• PEAK DET • SHAPING

FEATURES

• Wide operation voltage

V

• Low power consumption

I

• High input sensitivity

50

µV

• Peak detector

• Small size package

8-SIP

• A minimum number of parts are required

• Designed for use with the KS5803 remote control transmitter IC.

BLOCK DIAGRAM

Device

Package

Operating Temperature

KA2181

8-SIP

-20

°C ~+75°C

8-SIP

ORDERING INFORMATION

Fig. 1

VCC

6 ~14.4V

Output

Tuning Coil

3

4

8

Peak Hold Capacitor

+

Power Supply

+

Input

1

7

AMP

+

By-pass Capacitor

6

Integral Capacitor

Ground

5

ABLC

BIAS

PIN-Photo

Diode

2