Infrared Remote Control Receiver Module
IRM-2638T
Block Diagram
Vs
OUT
Pin Configuration
1. OUT
2. GND
3. V
CC
Carrier
frequency f0
IN
Inpu
t
CGA &
filter
Demodulator
µC
1
2 3
Oscillator
AGC/ATC & digital
control
Features
Modulated IR signal
min 10 pulses
GND
High protection ability against EMI
Circular lens for improved reception characteristics
Line-up for various center carrier frequencies.
Low voltage and low power consumption.
High immunity against ambient light.
Photodiode with integrated circuit.
TTL and CMOS compatibility.
Long reception distance.
High sensitivity.
Pb free and RoHS compliant.
Description
The IRM-2638T device is miniature type infrared remote control system receiver which has been developed and
designed by utilizing the most updated IC technology.
The PIN diode and preamplifier are assembled onto a lead frame and molded into a black epoxy package which
operates as an IR filter. The demodulated output signal can directly be decoded by a microprocessor..
1
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Copyright © 2010, Everlight All Rights Reserved. Release Date : June 06, 2013. Issue No: DMO-0000372 Rev.2
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DATASHEET
Infrared Remote Control Receiver Module
IRM-2638T
Applications
• Light detecting portion of remote control
• AV instruments such as Audio, TV, VCR, CD, MD, etc.
• Home appliances such as Air-conditioner, Fan, etc.
• The other equipments with wireless remote control.
• CATV set top boxes
• Multi-media Equipment
Application Circuit
RC Filter should be connected closely between Vcc pin and GND pin.
Absolute Maximum Ratings (Ta=25℃)
℃
Parameter
Supply Voltage
Operating Temperature
Storage Temperature
Soldering Temperature
*
1
*1
Symbol
Vcc
Topr
Tstg
Tsol
Rating
6
-25 ~ +85
-40 ~ +85
260
Unit
V
4mm from mold body for less than 10 seconds
2
Copyright © 2010, Everlight All Rights Reserved. Release Date : June 06, 2013. Issue No: DMO-0000372 Rev.2
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℃
℃
℃
DATASHEET
Infrared Remote Control Receiver Module
IRM-2638T
Electro-Optical Characteristics (Ta=25℃, Vcc=5.0V)
℃
Parameter
Current consumption
B.P.F Center Frequency
Supply voltage
Peak wavelength
Reception range
Half angle(horizontal)
Half angle(vertical)
High level pulse width
Low level pulse width
High level output voltage
Low level output voltage
Symbol
Icc
Fo
V
CC
λ
p
L
0
L
45
φ
h
φ
v
T
H
T
L
V
H
V
L
Min.
---
---
4.5
---
14
6
---
---
400
400
4.5
---
Typ.
1.0
38
-
940
---
---
45
45
---
---
---
0.2
Max.
1.2
---
5.5
---
---
m
---
---
---
800
800
---
0.5
deg
deg
µs
µs
V
V
At the ray axis
*3
At the ray axis
*2
Unit
mA
KHz
V
nm
Condition
No input signal
2. The ray receiving surface at a vertex and relation to the ray axis in the range of
θ=0°
and
θ=45°
.
3. A range from 30cm to the arrival distance. Average value of 50 pulses.
3
Copyright © 2010, Everlight All Rights Reserved. Release Date : June 06, 2013. Issue No: DMO-0000372 Rev.2
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DATASHEET
Infrared Remote Control Receiver Module
IRM-2638T
Test method
The specified electro-optical characteristics is satisfied under the following Conditions at the controllable distance.
1. Measurement place
A place that is nothing of extreme light reflected in the room.
2. External light
Project the light of ordinary white fluorescent lamps which are not high
Frequency lamps and must be less then 10 Lux at the module surface.
(Ee 10Lux)
3. Standard transmitter
A transmitter whose output is so adjusted as to
Vo=400mVp-p
and the output Wave form shown in
Fig.-1.According to the measurement method shown in Fig.-2 the standard transmitter is specified. However, the
infrared photodiode to be used for the transmitter should be
λp=940nm, λ=50nm.
Also, photodiode is used of
PD438B (Vr=5V). (Standard light / Light source temperature 2856°
K).
4. Measuring system According to the measuring system shown in Fig.-3
Fig.-1 Transmitter Wave Form
D.U.T output Pulse
4
Copyright © 2010, Everlight All Rights Reserved. Release Date : June 06, 2013. Issue No: DMO-0000372 Rev.2
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Fig.-2 standard transmitter calibration
Fig.-2 standard transmitter calibration
Fig.-3
Measuring System
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DATASHEET
Infrared Remote Control Receiver Module
IRM-2638T
Typical Electro-Optical Characteristics Curves
Fig.-4 Relative Spectral Sensitivity vs. Wavelength
Fig.-5 Relative Transmission Distance vs. Direction
Fig.-6 Output Pulse Length vs. Arrival Distance
Fig.-7 Arrival Distance vs. Supply Voltage
5
Copyright © 2010, Everlight All Rights Reserved. Release Date : June 06, 2013. Issue No: DMO-0000372 Rev.2
θ
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