ROHM RPM7237-H4R Technical data

RPM7237-R series

Photo Link Module

IR Receiver Module

RPM7237-R series

RPM7237-R series are remote control rec eiver modul e. Small-size d, light- weight, and low voltag e operated (from 2. 7V)
modules have been achieved by using resin mold.

zCenter frequency

36.7kHz

zApplications

All household electric appliances su ch as TV, DVD, air conditioner and audio equ ipment.

zFeatures

1) Low voltage operation. (V

2) Low current consumption. (I

3) Superior anti V

CC noise characteristics.

4) 5 types of holders available to each set.

zRPM7237-R series

CC=2.7 to 3.6V )

CC=0.3mA, VCC=3V)

Sub carrier

frequency

Height to lens

36.7kHz

RSIP-A3 (H13)

15.0mm

∗RPM7237-H13R

SIDE VIEW TOP VIEW

RSIP-A3 (H5)

9.6mm

RPM7237-H5R

RSIP-A3 (H4)

15.9mm

RPM7237-H4R

RSIP-A3 (H8)

7.2mm

RPM7237-H8R

RSIP-A3 (H9)

12.0mm

RPM7237-H9R

∗Under development

zAbsolute maximum ratings (Ta = 25°C)

Parameter Symbol
Supply Voltage
Output current
Storage temperature
Operating temperature voltage

Limits

CC

V

O

I

Tstg

Topr °C

6.3

2.0

−30 to +100

−10 to +75

Unit

V

mA

°C

zRecommended operating conditions (Ta = 25°C)

Parameter Symbol Min. Typ. Max. Unit

V

Supply voltage

CC

3.0 V2.7 3.6

Rev.B 1/6

RPM7237-R series

Photo Link Module

zBlock diagram

CC

V

100kΩ

Detector

ComparatorLIMITER

R

OUT

GND

I / V

AMP

BPF

zT ermina l description

Pin namePin No. Function
1V
2
3

OUT

GND

CC

V

OUTPUT TERMINAL
GROUND

POWER SUPPLY

zElectrical, Optical characteristics (Unless otherwise noted, Ta = 25°C V

Parameter Symbol Min. Typ. Max. Unit Conditions

CC

Consumption Current No outside light, No signal input
Effective Distance
High Level Output Voltage
Low Level Output Voltage
ON Pulse Width
OFF Pulse Width
Center frequency
Horizontal half angle
Vertical half angle

∗1 600/600µs burst wave is transmitted by standard transmitter. However, it must be measured after the initial transmission pulse is 10 pulse.
∗2 It is an angle when the linear arrival distance become half.

I

L
V
V

T

ON

T

OFF

fo

θ 1/2
θ 1/2

H

L

2.5

400
400

300 µA

−

8

−

−

−

−

15

−

−

600
600

36.7
45
35

500

0.5

800

−

−

CC=3V)

m−

Outer light condition Ee < 10 (Ix)

V−

<

Isink

V

µs
µs800

kHz−
deg
deg

200µA

=
Outer light condition Ee < 10 (Ix)
Outer light condition Ee < 10 (Ix)

z Measurement Conditions

(1) Transmit signal

∗1
∗1
∗1
∗1

∗1

∗2
∗2

600µs 600µs

Carrier frequency=fo, Duty=50%

Fig.1 Transmit signal

Rev.B 2/6

RPM7237-R series

Photo Link Module

(2) Stand ard transmitter

λ peak=940nm

∆

λ=40nm

OUT

/ R

20cm

RPM-302B

io=V

Standard transmitter

Fig.2 Measurement of standard transmitter proofreading

R

V

OUT

When standard transmitter output the signal at Fig.1 standard photodiode output become io=5µAp-p under the
measurement condition Fig.2.
(The radiant intensity of standard transmitter : 50mW / sr)

RPM-302B : standard photodiode has short current Isc=27 µA at Ee=1000(lx)
(using CIE standard light sou rce A)

(3) Measurement effective distan ce, horizonta l & vertical half angl e

RPM7237-R series

θ
θ

Standard transmitter

Light detector face
illuminance : Ee

Effective distance : L

(θ ; Indicates horizontal and vertical directions)

Fig.3 Measurement condition for effective distance

Effective distance L : Effective distance at θ=0° Fig.3
Horizontal & vertical half angle θ: The angle which effe ctive distan ce became 50% of L .

Rev.B 3/6