RPM922-H11
Photo Link Module
IrDA Infrared Communication Module
RPM922-H11
RPM922-H11 is an infrared communication module for IrDA Ver. 1.3 (Low Power). The infrared LED, PIN photo diode,
and 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.
zFeatures
1) Infrared LED, PIN photo diode, LED driver and receiver frequency formation circuit built in.
Improvement of EMI noise protection because of Shield Case.
2) Applied to SIR (9.6k to 115.2kbps) and MIR (0.576,1.152Mbps).
3) Surface mounting type.
4) Power down function built in.
5) Adjustable transmission distance by LED load resistance value.
6) Super small package (W=6.8mm, D=2.29mm, H=1.5mm)
zApplications
Mobile phone, PDA, DVC, Digital still camera, Printer, Handy terminal and etc.
zAbsolute maximum ratings (Ta=25°C)
Parameter
Symbol
Supply Voltage
Vcc / LEDVCC
Input Voltage
Vin(2, 3, 4pin)
Limits
Unit
6.5 ∗1
V
−0.3 to VCC+0.3
V
Operation Temperature
Topr
−30 to 85
°C
Storage Temperature
Tstg
−40 to 100
°C
LED Peak Current
Ifp
250
∗2
mA
∗1) This applies to all pins on the basis of ground pin (6pin).
∗2) LED Peak Current : < 90 µs, On duty < 25%
zRecommended operating conditions
Parameter
Supply voltage
Symbol
Min.
Typ.
Max.
Unit
VCC
2.4
3.0
3.6
V
LEDVCC
2.7
3.0
5.5
V
1/5
RPM922-H11
Photo Link Module
zBlock diagram and application circuit
R1
LEDVCC
1
LEDA
TXD
2
TXD
RXD
PWDOWN
PWDOWN
5
4
POWER
DOWN
AMP
AMP
3
RXD
VCC
VCC
6
AMP
C1
GND
GND
VCC(5pin) and LEDVCC(1pin) can be used on either common
power source or different one.
zRecommended values
Part symbol
Recommended value
Notice
C1
1µF, Ceramic or tantalum
Ex.) TCFGA1A685M8R (ROHM)
Bigger capacitance is recommended with much noise from power supply.
R1
2.2Ω ±5%,1/8 W(LEDVCC=3.0V)
at LED Emitting Duty ≤ 25%
[LED current set-up]
In case of using R1 with different condition from the above, formula is as follows :
LED resistance value : R1[Ω], LED average consumption current : ILED[mA], Supply voltage : VLEDVCC[V],
minimum necessary of irradiant intensity Iel [mW/sr]
(Recommended value : Ie1=25mW/sr, Including LED's distribution within ±15deg)
+
+
R1=139 (VLEDVCC−1.31) / Iel−7.2
ILED=Duty (VLEDVCC−1.31) / (R1+5.8)
Duty : LED duty at emitting
∗ Please set up to be ILED < 250 [mA] (Duty ≤ 25%)
(Reference) In case of using R1, typical intensity (Ieltyp) and maximum intensity (Ielmax) on axis are described as below.
Ieltyp = 260 × (VLEDVCC−1.31) / (R1+5.8)
Ielmax = 615 × (VLEDVCC−1.31) / (R1+5.8)
2/5
RPM922-H11
Photo Link Module
zTerminal description
Pin No
Terminal
Circuit
Function
LED Anode Terminal
Other power source can be used difference between
LEDVCC and VCC.
LED current depends on LED load resistance value.
Include internal current limiter (max.250mA).
LED
1
LEDA
Transmitting Data Input Terminal for IrDA
H:LED radiant (PWDOWN='L')
CMOS Logic Level Input.
Holding TXD="H"status, LED will be turned off at
approximately 48 µs.
VCC
2
TXD
240k
VCC
PWDOWN
1.8V
3
RXD
Receiving Data Output Terminal
When PWDOWN(4pin)='H', the RXD output will be pulled
260k
VCC
up to PWDOWN at approximately 260 kΩ.
Power-down Control Terminal
H: POWERDOWN
L : OPERATION
4
PWDOWN
CMOS Logic Level Input.
When input is "H", it will stop the receiving circuit, Pin−PD
current and transmitting LED operation.
5
VCC
Power Supply Terminal
Supply voltage for Transceiver circuits.
For preventing from infection, connect a capacitor between
GND(6pin).
6
GND
GROUND Terminal
−
Shield Case
Connect to Ground
3/5
RPM922-H11
Photo Link Module
zElectrical characteristics (Unless otherwise noted, VCC=3V, LEDVCC=3V, Ta=25°C)
Symbol
Min.
Typ.
Max.
Unit
Consumption current 1
ICC1
600
900
1200
µA
PWDOWN=0V, At no input light
Consumption current 2
ICC2
−
0.5
4.5
µA
PWDOWN=1.8V, At no input light
9.6
−
1152
kbps
−
VCC
V
−
0.5
V
Parameter
Transmission rate
PWDOWN input high voltage
VPDH
1.4
Conditions
VCC = 2.4 to 2.86 V
VCC = 2.86 to 3.6 V
1.5
VCC = 2.4 to 3.6 V
PWDOWN input low voltage
VPDL
PWDOWN input high current
IPDH
−1.0
0
1.0
µA
PWDOWN=1.8V
PWDOWN input low current
IPDL
−1.0
0
1.0
µA
PWDOWN=0V
−
VCC
V
0
< Transmitter >
1.4
VCC = 2.4 to 2.86 V
TXD input high voltage
VTXH
TXD input low voltage
VTXL
0
−
0.5
V
VCC = 2.4 to 3.6 V
TXD input high current
ITXH
3.2
7.5
15
µA
TXD=1.8V
TXD input low current
ITXL
−1.0
0
1.0
µA
TXD=0 V
LED anode current 1
ILED1
−
211
249
mA
R1=2.2Ω
RXD output high voltage
VRXH
1.55
1.8
1.9
V
IRXH= −100µA, CL=15pF
RXD output low voltage
VRXL
0
−
0.4
V
IRXL= 200µA, CL=15pF
RXD output rise time
tRR
−
100
300
ns
CL=15pF
RXD output fall time
tFR
−
−
50
ns
CL=15pF
twRXD
190
300
532
ns
CL=15pF, 9.6k to 1.152 Mbps
Tjrxd
−
−
±70
ns
1.152 Mbps
tRT
−
40
200
µs
1.5
VCC = 2.86 to 3.6 V
< Receiver >
RXD output pulse width
RXD output pulse edge jitter
Receiver latency time
zOptical characteristics (Unless otherwise noted, VCC=3V, LEDVCC=3V, Ta=25°C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Peak wave length
λP
850
888
900
nm
Intensity1
IE1
25
55
130
mW / sr
Half−angle
θL / 2
±15
−
−
deg
Rise time / Fall time
Tr / Tf
−
−
40
ns
−
−
25
%
Tj
−25
−
25
ns
ns
Optical over shoot
Edge jitter
Optical pulse width
Conditions
−15 deg <
−θ L <
− 15 deg
R1=2.2Ω
10% to 90%
Twe
172
217
256
Minimum irradiance in angular
Eemin
−
11
18
µW /
Maximum irradiance in augular
Eemax
500
−
−
mW / cm2 −15 deg <
−θL<
− 15 deg
Input half−angle
Maximum emitting time
cm2
θD / 2
±15
−
−
deg
TLEDmax
20.5
48
96
µs
tTXD=217 ns, VTHX / VTXL=1.8V / 0V
−15 deg <
−θ L <
− 15 deg
VTHX / VTXL=1.8V / 0V
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.
4/5
RPM922-H11
Photo Link Module
zNotes
1) LEDVCC (1pin), VCC (5pin)
•
Other power source can be used difference between LEDVCC and VCC.
2) Caution in designing board lay-out
To get maximum potential from RPM922-H11, please keep in mind following instruction.
•
The line of RXD (3pin) should be connected at backside via through hole close to RPM922-H11 pin lead. Better not
to be close to photo diode side (6pin side).
⇒This is to minimize feedback supplied to photo diode from RXD.
•
Better to be placed at more than 1.0cm radius from photo diode (6pin side) and also away from the parts which
generate noise, such as DC / DC converter.
•
As for C1 between 5-6 pins, it should be placed close to RPM922-H11.
3) Notes
•
Please be sure to set up the TXD (2pin) input to be “L” (under 0.3V) 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) except 4 Mbps.
There might be on error if used by different signal format.
•
Dusts or scratch on the lens may effect the characteristics of product, Please handle it with care.
4) Eye safe
•
EN60825-1 (IEC60825-1 amendment2), Class1 Eye safe.
zExternal dimensions (Unit : mm)
6.8
3.4
2.38
1.5
0.1±0.1
STAND OFF
2.3
1.1
PD
6.4
2.29
2.18
0.4
0.16
2.11
0.68
LED
1PIN
6PIN
0.37
0.95±0.1
P0.95×5=4.75
NOTE
1.TOLERANCE:±0.2
UNIT:mm
ETH679
5/5
Appendix
Notes
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.
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