EVERLIGHT ELECTRONICS CO.,LTD.
Technical Data Sheet
Infrared Remote-control Receiver Module
IRM-2638V
Features :
• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• Improved shielding against electrical field disturbance
• TTL and CMOS compatibility
• Output active low
• Low power consumption
• Improved immunity against ambient light
• Suitable burst length
≧
10 cycles/burst
Descriptions
‧The
IRM-2638V are miniaturized receivers for infrared remote
control systems. PIN diode and preamplifier are assembled on
lead frame, the epoxy package is designed as IR filter. The
demodulated output signal can directly be decoded by a
microprocessor. IRM-2638V is the standard IR remote control
receiver series, supporting all major transmission codes.
Applications
1. Optical switch
2. 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
PART
Chip
Compound
MATERIAL
Silicon
Epoxy
COLOR
Black
Black
Everlight Electronics Co., Ltd.
Device No：DMO-026-311
http:\\www.everlight.com
Prepared date：07-13-2004
Rev 1.1
Page: 1 of 9
Prepared by：Carryll Hsu
EVERLIGHT ELECTRONICS CO.,LTD.
IRM-2638V
Package Dimensions
OUT
GND
Vcc
Notes:
1.All dimensions are in millimeters.
2.Tolerances unless dimensions
±0.3mm.
Absolute Maximum Ratings (Ta=25℃)
Parameter
Supply Voltage
Operating Temperature
Storage Temperature
Soldering Temperature
Symbol
Vcc
Topr
Tstg
Tsol
Rating
0~6
-25 ~ +85
-25 ~ +85
260
Unit
V
℃
℃
℃
4mm from mold body
less than 10 seconds
Notice
Everlight Electronics Co., Ltd.
Device No：DMO-026-311
http:\\www.everlight.com
Prepared date：07-13-2004
Rev 1.1
Page: 2 of 9
Prepared by：Carryll Hsu
EVERLIGHT ELECTRONICS CO.,LTD.
IRM-2638V
Recommended Operating Condition
Supply Voltage Rating: Vcc 4.5V to 5.5V
Electro-Optical Characteristics (Ta=25℃, and Vcc=5 V)
Parameter
Consumption Current
B.P.F Center Frequency
Peak Wavelength
Reception Distance
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
λ
p
L
0
L
45
Θ
h
Θ
v
T
H
T
L
V
H
V
L
MIN.
---
---
---
---
---
---
---
400
400
4.7
---
TYP.
1.2
38
940
30
15
45
45
---
---
---
---
MAX.
---
---
---
---
---
---
---
800
800
---
0.25
deg
deg
μs
μs
V
V
At the ray axis
*2
At the ray axis
*1
Unit
mA
KHz
nm
m
Condition
No signal input
*1:The ray receiving surface at a vertex and relation to the ray axis in the range of
θ=
0° and
θ=45°.
*2:A range from 30cm to the arrival distance. Average value of 50 pulses.
Everlight Electronics Co., Ltd.
Device No：DMO-026-311
http:\\www.everlight.com
Prepared date：07-13-2004
Rev 1.1
Page: 3 of 9
Prepared by：Carryll Hsu
EVERLIGHT ELECTRONICS CO.,LTD.
IRM-2638V
Test Method：
The specified electro-optical characteristics is satisfied under the following
Conditions at the controllable distance.
Measurement place
A place that is nothing of extreme light reflected in the room.
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)
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).
Measuring system
According to the measuring system shown in Fig.-3
Fig.-1
Transmitter Wave Form
D.U.T output Pulse
Carrier frequency is adjusted to
center frequency of each product.
OUTPUT PULSE
OF DEVICE
IR TANSMITTER
OUTPUT WAVE FORM
Duty=0.5
Everlight Electronics Co., Ltd.
Device No：DMO-026-311
http:\\www.everlight.com
Prepared date：07-13-2004
Rev 1.1
Page: 4 of 9
Prepared by：Carryll Hsu
EVERLIGHT ELECTRONICS CO.,LTD.
IRM-2638V
Fig.-2
Measuring Method
20cm
10k
+5.0± 0.1V
10uF
θ
Fig.-3
Measuring System
L: Transmission Distance
Vcc
θ
OUT
D.U.T
Standard Transmitter
Vout
100k
Standard Transmitter
Vout
GND
θ: Angle Of Horizontal & Vertical Direction
Oscilloscope
Block Diagram：
IN
Vs
Input
CGA & filter
Demodulator
OUT
µC
Oscillator
Carrier frequency f0
AGC/ATC & digital control
Modulated IR signal
min 10 pulses
GND
Application Circuit：
RC Filter should be connected closely between Vcc pin and GND pin.
Everlight Electronics Co., Ltd.
Device No：DMO-026-311
http:\\www.everlight.com
Prepared date：07-13-2004
Rev 1.1
Page: 5 of 9
Prepared by：Carryll Hsu
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