EVERLIGHT IRM-H538 DATA SHEET

EVERLIGHT ELECTRONICS CO.,LTD.

Technical Data Sheet
Infrared Remote-control Receiver Module

Features

‧High shielding against electric field disturbance.
‧Circular lens to improve the receive characteristic.
‧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.
‧Top-received SMD.
‧Suitable burst length ≧
‧This product itself will remain within RoHS compliant version.
‧Pb free.
‧ External dimensions 5.3(L)*2.9(W)*3.65(H)mm.

10 pulses/burst.

Descriptions

The device is a miniature SMD type infrared remote
control system receiver that has been developed and
designed by utilizing the most updated IC technology. The
PIN diode and preamplifier are assembled on PCB, the
epoxy package is designed as an IR filter. The demodulated
output signal can directly be decoded by a microprocessor.

Applications

1. 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

Device Selection Guide

IRM-H538/TR2

PART MATERIAL COLOR

Chip Silicon ---

Package Epoxy Black

Metal case SPCC Silver white

Everlight Electronics Co., Ltd. http:\\www.everlight.com Rev 1 Page: 1 of 12

Device No

：

DMO-538-400 Prepared date：11-24-2006 Prepared by：Cindy Lin

EVERLIGHT ELECTRONICS CO.,LTD.

Package Dimensions

Notes：：：：1.All dimensions are in millimeters.

1

IRM-H538/TR2

Pin Function
1 :V

out

2 :V

cc

3 :GND

3

2

2.Tolerances unless dimensions ±0.2mm.

Soldering patterns

The following soldering patterns are recommended for reflow-soldering :

Unit: mm

Available Types For Different Carrier Frequencies

Type Carrier Frequencies (Typ)

IRM-H538/TR2 38 kHz

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Device No

：

DMO-538-400 Prepared date：11-24-2006 Prepared by：Cindy Lin

EVERLIGHT ELECTRONICS CO.,LTD.

Absolute Maximum Ratings (Ta=25℃℃℃℃)

Parameter Symbol Rating Unit

Supply Voltage Vcc

Operating Temperature Topr

Storage Temperature Tstg

0~6

-25 ~ +85

-40 ~ +85

V

℃

℃

Recommended Operating Condition

Supply Voltage Rating: Vcc 2.7V to 5.5V

Electro-Optical Characteristics (Ta=25℃℃℃℃, and Vcc=3.0V)

Parameter Symbol

Supply Current Icc

MIN. TYP. MAX. Unit

--- --- 1.2

IRM-H538/TR2

Notice

Condition

mA No signal input

Peak Wavelength

Reception Distance

Half Angle(Horizontal)

Half Angle(Vertical)

High Level Pulse Width TH

Low Level Pulse Width TL

High Level Output Voltage

Low Level Output Voltage

Notes:

*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.

λp

L0

L45

Θh

Θv

VH

VL

--- 940 ---

8 --- ---

5 --- ---

--- 45 ---

--- 45 ---

400 --- 800

400 --- 800

2.7 --- ---

--- 0.2 0.5

nm

m

deg

deg

μs

μs

V

V

At the ray axis

*1

At the ray axis

*2

Everlight Electronics Co., Ltd. http:\\www.everlight.com Rev 1 Page: 3 of 12

Device No

：

DMO-538-400 Prepared date：11-24-2006 Prepared by：Cindy Lin

EVERLIGHT ELECTRONICS CO.,LTD.

IRM-H538/TR2

The Notice of Application:

Transmission remote control signal consist of four parts: Encode Part, IR Transmitter Source, IRM
device, Decode Part

1. When IRM-H538 code select frequency, it need to well understand the center system of
encode part.

2. Strong or weak light of IR Transmitter can affect distance of transmission.

3. Minimum Burst Length T

4. It needs to ensure the translation range of decode part if it is applied to the pulse-width range.

If the above items hardly assure of its application, it’ll cause NG(no good) message from the edge of
signal.

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).
(Standard light / Light source temperature 2856°K).
Measuring system
According to the measuring system shown in Fig.-3

Fig.-1 Transmitter Wave Form D.U.T output Pulse

IR TANSMITTER

OUTPUT WAVE FORM

Carrier frequency is adjusted to
center frequency of each product.

burst

(number of pulses per burst) : 10 cycles

OUTPUT PULSE
OF DEVICE

Duty=0.5

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Device No

：

DMO-538-400 Prepared date：11-24-2006 Prepared by：Cindy Lin