AIC1863 Datasheet, PDF (1/8 Pages) Analog Intergrations Corporation – IR Preamplifier for Remote Control System

AIC1863
IR Preamplifier for Remote Control System
n ^FEATURES
l Only Two External Components Required Other
than the Photodiode.
l Easy to Integrate into Module due to Small Chip
Size.
l Minimized Chances of Malfunction Due to Am-
bient Light.
l Low Power Consumption.
l Center Frequency of Band Pass Filter Adjusta-
ble by an External Resistor.
l Microcomputer Compatible.
n ^APPLICATIONS
l IR Remote Control Receivers for Consumer
Electronic Products, such as TVs, VCRs,
VCD/DVD Players, Audio Devices, Air Condi-
tioners, Electric Fans...etc.
n ^DESCRIPTION
The AIC1863 is a high performance infrared re-
mote control preamplifier. Especially, it has ex-
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.
n ^{TYPICAL APPLICATION CIRCUIT}
C1
0.1µF
VOUT
1 _CA
2 _NC
3 _OUT
4 _DGND
VCC ⁸
FO ⁷
AGND ⁶
IN ⁵
AIC1863
Vcc (+5V)
R1
110K(fo =38KHz)
Photo
Diode
IR Remote Control Receiver
n ^{ORDERING INFORMATION}
Analog Integrations Corporation
www.analog.com.tw
DS-1863-00
TEL: [phone]
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
FAX: [phone]
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