AIC1863
IR Preamplifier for Remote Control System
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FEATURES
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DESCRIPTION
The AIC1863 is a high performance infrared r -
e
mote control preamplifier. Especially, it has e
x-
cellent interference suppression capability. The
infrared pulses arriving at the photodiode are
treated by the trans-impedance amplifier and
amplified by the auto-gain control amplifier, limit-
ter amplifier, and band-pass filter. The following
evaluation circuits, including the comparator, in-
tegrator, and schmitt-trigger, demodulate the
transmitted digital signal. Reduction of sensitivity
due to external interference is achieved by the
short-time boost and long-time control circuits,
which prevent interference voltages from affecting
the output.
Only Two External Components Required Other
than the Photodiode.
Easy to Integrate into Module due to Small Chip
Size.
Minimized Chances of Malfunction Due to Am-
bient Light.
Low Power Consumption.
Center Frequency of Band Pass Filter Adjusta-
ble by an External Resistor.
Microcomputer Compatible.
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APPLICATIONS
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IR Remote Control Receivers for Consumer
Electronic Products, such as TVs, VCRs,
VCD/DVD Players, Audio Devices, Air Condi-
tioners, Electric Fans...etc.
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TYPICAL APPLICATION CIRCUIT
Vcc (+5V)
1 CA
2 NC
C1
0.1
µ
F
V
OUT
3 OUT
4 DGND
AIC1863
VCC 8
FO
7
R1
110K(fo =38KHz)
AGND 6
IN
5
Photo
Diode
IR Remote Control Receiver
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ORDERING INFORMATION
Analog Integrations Corporation
www.analog.com.tw
DS-1863-00
TEL: 886-3-5772500
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
FAX: 886-3-5772510
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AIC [ ANALOG INTERGRATIONS CORPORATION ]
