Datasheet RPM972-H14 Datasheet (ROHM)

RPM972-H14

Photo Link Module

IrDA Infrared Communication Module

RPM972-H14

RPM972-H14 is an infrared communication module for IrDA Ver . 1.4 (Low Power). The infrared LED, PIN photo diode,
and waveform shaping LSI are all integrated into one single package. This module is designed for low power
consumption. The very small package makes it a perfect fit for mobile devices.
Also it provides the capability of IR remote control transmission for universal remote control applications.

zFeatures

1) Infrared LED, PIN photo diode, LED driver and receiver frequency formation circuit built in.
Improvement of EMI noise protection by Shield Case.

2) Applied to SIR (9.6k to 115.2kbps), MIR (0.576M, 1.152Mbps) and FIR(4Mbps).

3) Surface mount type.

4) Power down function bui lt in.

5) Adjustable communication distance by LED load resistance value.

6) Infrared remote control transmission driver built-in.

zApplications

Cellular phone, PDA, DVC, Digital still camera, Printer, Handy terminal etc.

zAbsolute maximum ratings (Ta=25°C)

Parameter Symbol Limits Unit
Supply voltage Vcc
Input voltage
Operation temperature
Storage temperature

∗1) This applies to all pins basis ground pin (8pin).

/

V

LEDA

/

Vin(3,4,5pin)

Topr
Tstg

V

zRecommended operating conditions

Parameter Symbol Min. Typ. Max. Unit

CC

V

Supply voltage

V

LEDA

V

IO

IO

−0.3 to V

∗1

6.5

IO

+0.3

−25 to 85

−30 to 100

3.0 V2.4 3.6

3.0 V2.7 5.5

3.0 V1.7 V

V
V

°C
°C

CC

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Photo Link Module

zT ermina l description

Terminal Circuit FunctionPin No

1 LEDA

RPM972-H14

1

LED

2

LED Anode Terminal

LED drive power supply.
Other power source can be used difference between

CC

and VCC.

LEDV

2 LEDC

3

TXD

RXD

4

PWDOWN

5

/Mode

V

CC

6

V

IO

7

8 GND

Shield Case

−

LED Cathode Terminal

IO

V

Transmitting Data Input Terminal

H:LED radiant (PWDOWN='L')
CMOS Logic Level Input.
Holding TXD="H"status, LED will be turn off

600k

V

300k

IO

V

PWDOWN

IO

V

IO

approximately 48 µs.

Receiving Data Output Terminal

When PWDOWN(5pin)='H', the RXD output will be pulled
up to V

IO

at approximately 300 kΩ.

Power-down Control and Mode SettingTerminal

H: POWERDOWN
L : OPERATION
CMOS Logic Level Input.

When input is "H", it will stop the receiving circuit, Pin−PD
current and transmitting LED operation.

V

CC

Supply voltage for Transceiver circuits.

V

IO

Supply voltage for I / O pins
(PWDOWN,RXD,TXD).

GROUND

Connect to Ground.

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Photo Link Module

zElectrical characteristics (Unless otherwise noted, V

Parameter Symbol Min. Typ. Max. Unit Conditions

Consumption current 1(SIR / MIR mode)
Consumption current 2(FIR mode)
Consumption current 3(at PWDOWN) 0.01

ICC1
I

CC2

I

CC3

Transmission rate
PWDOWN input high voltage
PWDOWN input low voltage
PWDOWN input high current
PWDOWN input low current

VPDH
VPDL

IPDH
IPDL

< Transmitter >

TXD input high voltage
TXD input low voltage
TXD input high current
TXD input low current
LED anode current

VTXH

VTXL
ITXH

ITXL

ILED1

< Receiver >

RXD output high voltage
RXD output low voltage
RXD output rise time
RXD output fall time
RXD output pulse width(SIR)

VRXH
VRXL

tRR
tFR

twRXDS
RXD output pulse width(MIR1) twRXDM1 200 434 ns800
RXD output pulse width(MIR2) twRXDM2 100 217 ns500

twRXDF1
RXD output pulse width(FIR2)
Receiver latency time

twRXDF2

tRT

zOptical characteristics (Unless otherwise noted, V

Parameter Symbol Min. Typ. Max. Unit Conditions
Peak wave length
Intensity
Half−angle
Rise time / Fall time

λP

IE
θL / 2
Tr / Tf

880

Optical over shoot
Edge jitter
Optical pulse width(MIR)
Optical pulse width(FIR)
Minimum irradiance in angular 1
Minimum irradiance in angular 2

Maximum irradiance in angular
Input half−angle

Maximum emitting time

1. This product is not designed for protection against radioactive rays.

2. This product dose not include laser transmitter.

3. This product includes one PIN photo diode.

4. This product dose not include optical load.

Tj
TweM 172 217 256
TweF 115 125 135

Eemin1
Eemin2

Eemax

θD / 2

TLEDmax

−25

500
±15

CC=3V , VL EDV

400
400

800

1000

−µA

0.0096
2/3∗V

0

−1.0

−1.0

2/3∗V

0

2.5

−1.0
180

V

IO

−0.4
0

−

−

1.0

−

−

IO

−

1/3∗V
0
0

−

IO

−

1/3∗V
5
0

250

−

−

20
20

2.3

125RXD output pulse width(FIR1)

195 250 290

100

−

CC=3V , VLEDV

890 nm
10025

−

−

−

−

900

−

−

−

−

−

−

−

−

−±15

40
25
25

8

20

−

−−

16

48

120

=3V , VIO=3V, Ta=25°C)

CC

1600
1600

0.2

µA PWDOWN=0V, At no input light
µA

PWDOWN=0V, At no input light
PWDOWN=V

Mbps4

V

1.0

1.0

V

10

1.0
300

V

0.4

−

−

4.0

16585

200

CC

V

IO

IO

IO

IO

V

µA
µA

V
V

µA
µA

VIO=1.7 to 3.6 V
(V

PWDOWN=V
PWDOWN=0V

VIO=1.7 to 3.6 V
(VIO VCC)

TXD=V
TXD=0V

mA

V

IO

IRXH= −200µA

V

IRXL=200µA

ns

C

L=15pF

ns

C

L=15pF

µs

C

L=15pF, 9.6k to 115.2 kbps, duty19%

C

L=15pF, 0.576 Mbps, duty25%
L=15pF, 1.152 Mbps, duty25%

C

ns

L=15pF, 4 Mbps(125ns pulse)

C

ns

C

L=15pF, 4 Mbps(250ns pulse)

µs

=3V , VIO=3V, Ta=25°C)

−15 deg θ L 15 deg

/

sr

mW

deg

ns

10% to 90%
%
ns
ns

tTXD=217ns
ns

tTXD=125ns

2

µW / cm
µW

mW

−15 deg θ L 15 deg, 115.2kbps

2

−15 deg θ L 15 deg, 115.2kbps

/

cm

2

−15 deg θ L 15 deg

/

cm

deg

TXD=V

µs

RPM972-H14

IO

, At no input light

<

IO

VCC)

−

IO

<

−

IO

<−<

−

<−<

<−<

<−<

IO

−

−

−

<

−

<

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RPM972-H14

Photo Link Module

zTiming chart

1. Mode Setting (SIR / MIR / FIR)

With RPM972-H14 there is a need for mode s witch accor ding to c ommun icati on rate. F or th e mode s etting, ther e
are “PWDOWN/Mode” and “TXD”. Please see below diagram for the set up of mode.

(a) FIR Mode

(b) SIR / MIR Mode

PWDOWN

/

Mode

TXD

Mode

>

ts 200ns

=

>

ts 200ns

=

tdmax=200µs

FIR Mode
(4Mbps)

PWDOWN

/

Mode

TXD

Mode

tdmax=200µs

Fig. 1

2. Remote control transmitting
When remote control signal is input to the TXD terminal, remote control is transmitted.

3. Timing chart (use example)
(a) Emitting
When a pulse is inputted to TXD terminal, LED is emitting, and a signal is transmitted.
But, when “H” condition follows TXD terminal , LED turns of f the lights in the range of TLEDmax.

SIR / MIR Mode
(9.6k-1.152Mbps)

TXD

more than TLEDmaxless than TLEDmax

(IrDA/RC emitting)(IrDA/RC emitting)(IrDA/RC emitting)

LED emitting

TLEDmax

PWDOWN

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RPM972-H14

Photo Link Module

(b) Detecting
When it is received an optical si gnal, a signal outpu ts from RXD termina l at the following timi ng.
It is outputted in the pulse width fixed at the time of SIR mode (9.6k to 115.2kbps).
It is outputted in the pulse width which is the same as the input signal at the time of MIR mode (0.576M, 1.152Mbps)
and FIR mode (4Mbps).
But, as for the pulse width of the input signal, it is based on IrDA Physical Layer Specification.

1 SIR mode (output example)

Light input

RXD

PWDOWN

2 MIR mode (output example)

Light input

RXD

PWDOWN

3 FIR mode (output example)

less than 2.3µs

∗ more than 1.41µS

approximately 2.3µs

434ns 217ns

434ns 217ns

more than 2.3µs

300kΩ pull up

300kΩ pull up

Light input

RXD

PWDOWN

125ns 250ns

300kΩ pull up

125ns 250ns

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Photo Link Module

zDimensions (Unit : mm)

RPM972-H14

R1.0

2.2

1.0

2.67

LED

0.6±0.1

1.1

1.4

2.8

4.0
A

P0.95×7=6.65

0.6

8.0

PinPD

0.37±0.1

0.95

0.48

R1.1

2.2

0.15±0.1

0.78

2.59

0.15±0.1

2.9

81

(0.13)

0.68±0.1

A Part Size (Shield Case underside size)

NOTE

1. TOLERANCE : ±0.2mm

2. COPLANARITY : 0.1mmMAX
UNIT : mm

ETH871

0.76

2.2

0.75

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Photo Link Module

zBlock diagram and application circuit

RPM972-H14

AMP

AMP

AMP

POWER

DOWN

/Mode

LEDA

18765432

LEDC

TXD

RXD

PWDOWN/Mode

V

CC

C1

V

IO

GND

Transmitter
signal

Receiver
signal

LEDV

IrDA/RC
Controller

V

CC

V

IO

GND

CC

zAttac hed components

Part symbol Recommended value

C1

6.8µF, Ceramic or tantalum
Ex.)TCFGA1A685M8R(ROHM)

Notice

Bigger capacitance is recommended with
much noise from power supply.

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RPM972-H14

Photo Link Module

zNotes

1) VLEDV

•

There is no problem even if it is supplied separately from each power supply such as a fix voltage power supply and a
battery power supply. (V

But, use it in the recommendation power supply voltage range.

2) Caution in designing bo ard lay-out
T o get maximum potential from RPM972-H14, please keep in mind following instruction.

•

The line of RXD (4pin) should be connected at backside via through hole close to RPM972-H14 pin lead. Better not

to be close to photo diode side (8pin side).

⇒This is to mini mize feedback supplied to photo diode from RXD.

•

The parts which generate noise such as DC / DC converter should be one’s placed at more than a radius of 1.0cm
away from photo diode (8pin side).

•

As for C1 between 6 - 8 pins, it should be one’s placed close to RPM972-H14.

3) Notes

•

Please be sure to set up the TXD (3pin) input to be “L” (under 0.6V) except transmitting data.

(For < 90µ sec. ON duty < 25%).

•

Powerdown current might increase if exposed by strong light (ex. direct sunlight) at powerdown mode.

•

Please use by the signal format which is specified by IrDA Ver1.3 (Low Power).

There might be on error if used by different signal format.

<Communication rate and pulse continuous time>

(1pin), VCC (6pin) and VIO (7pin)

CC

IO < Vcc + 0.3V)

Signaling Rate Modulation

9.6kbit/s RZI

19.2kbit/s RZI

38.4kbit/s RZI

57.6kbit/s RZI

115.2kbit/s RZI

0.576Mbit/s RZI

1.152Mbit/s RZI

4.0Mbit/s

single pulse
double pulse

4PPM
4PPM

Rate Tolerance

% of Rate

+/− 0.87 1.41µs 19.53µs 22.13µs
+/− 0.87 1.41µs 9.77µs 11.07µs

+/− 0.87 1.41µs 4.88µs 5.96µs
+/− 0.87 1.41µs 3.26µs 4.34µs
+/− 0.87 1.41µs 1.63µs 2.23µs

+/− 0.1 295.2ns 434.0ns 520.8ns
+/− 0.1 147.6ns 217.0ns 260.4ns

+/− 0.01 115.0ns
+/− 0.01 240.0ns 250.0ns 260.0ns

Pulse Duration

Minimum

Pulse Duration

Nominal

Pulse Duration

Maximum

125.0ns 135.0ns

•

Please pay attention to the lens carefully .

Dusts or scratch on the lens may effect the characteristics of product, please handle it with care.

4) Eye safe

•

Eye safe is based on EN60825-1(IEC60825-1 amendment 2), Class1 Eye safe.

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RPM972-H14

Photo Link Module

5) Reference

•

Please insert external resista nce (R1, 1 /4W) betw een LED anode terminal an d VLEDVcc to limit th e LED ave rage

consumption current for current limitation.

In case of using R1, formula is as follows :
LED resistance value : R1 [Ω], LED average consumption current : ILED [mA],
Supply voltage : VLEDV

R1 = 1 10 × (VLEDV
ILED = Duty × (VLEDVCC − 1.36) / (R1+4) [A]
Duty : LED duty at emitting

∗ Please set up to be ILED < 180[mA] (Duty ≤ 25 %).

CC [V], minimum necessary of irradiant intensity Ie1 [mW/sr]

CC − 1.45) / Ie1 −5 [Ω]

AMP

AMP

AMP

POWER

DOWN

/Mode

LEDA

18765432

LEDC

TXD

RXD

PWDOWN/Mode

V

CC

C1

V

IO

GND

R1

CC

LEDV

TXD

RXD

PWDOWN
/Mode

CC

V

V

IO

GND

9/9

Appendix

No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document are no antiradiation design.

Notes

The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.

About Export Control Order in Japan

Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.

Appendix1-Rev1.1