REMOTE CONTROL PREAMPLIFIER
KA2181
REMOTE CONTROL PREAMPLIFIER
REMOTE CONTROL PREAMPLIFIER
The KA2181 is a silicon monolithic integrated circuit d...
Description
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 VCC=6 to 14.4V Low power consumption ICC=2.5mA Typ. ORDERING INFORMATION High input sensitivity 50µVP-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
KA2181
REMOTE CONTROL PREAMPLIFIER
ABSOLUTE MAXIMUM RATINGS (TA=25° C)
Characteristic Supply Voltage Power Dissipation Operating Temperature Storage Temperature Symbol VCC PD TOPR TSTG Value 15 270 -20~+75 -45~+125 Unit V mW °C °C
RECOMMENDED OPERATING CONDITIONS
Characteristic Power Supply Input Frequency Symbol VCC f IN Min. 6.0 30 Typ. 8.5 Max. 14.4 50 Unit V KHz
ELECTERICAL CHARACTERISTICS
(TA=25° C, VCC=8.5V, fIN=40KHz)
Characteristic
Symbol ICC VIN 1 VIN 2 AVL υ IN γ IN VOL IOH
Test Conditions
Min. 1.5 2.1 3.4 40
Typ. 2.5 2.6 4.1 60...
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