ROHM RPM872-H14

RPM872-H14
Photo Link Module
IrDA infrared communication module
RPM872-H14
RPM872-H14 is an infrared communication module for IrDA Ver. 1.2 (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.
zFeatures
1) Applied to IrDA Ver. 1.2. (Low Power)
2) Designed for low power consumption at waiting mode (75µA).
3) Low operating voltage
VCC=2.0V to 3.6V
VIO=1.5V to 3.6V
VLED=2.6V to 5.5V
4) Small package.
5) Power down function.
zApplications
Cellular phones, PDA, Digital still camera, Handy terminals, and other portable equipments.
zAbsolute maximum ratings (Ta=25°C)
Parameter
Supply voltage
Symbol
Limits
Unit
VCC
7.0
V
Pd
100
mW
Operating temperature
Topr
−30 to +85
˚C
Storage temperature
Tstg
−30 to +100
˚C
Power dissipation
zRecommended operating conditions (Ta=25°C)
Parameter
Supply voltage
Symbol
Min.
Typ.
Max.
Unit
VCC
2.0
3.0
3.6
V
VLEDA
2.6
3.0
5.5
V
VIO
1.5
3.0
VCC
V
Rev.A
1/6
RPM872-H14
Photo Link Module
zBlock diagram and application circuit
AMP
2
1
AMP
GND
VIO
VIO
VCC
AMP
3
VCC
GND
4
GND
C1
PWDOWN
7
6
5
PWDOWN
RXD
RXD
TXD
TXD
LEDA
(LEDVCC)
8
POWER
DOWN
VCC(3pin) and VLEDA(8pin) can be used on
either common power source or different one.
Rev.A
2/6
RPM872-H14
Photo Link Module
zTerminal description
Function
Pin No
Terminal
1, 4
GND
GND
Pin1 and Pin4 must be connected to the
ground.
2
VIO
VIO
Supply voltage for I/O pins (PWDOWN,
RXD, TXD)
VCC
VCC
Supply voltage for Transceiver circuits.
For preventing from infection,
connect a capacitor between
VCC(3pin) and GND(4pin).
3
Circuit
Power-down Control Terminal
H : POWERDOWN MODE
L : OPERATING MODE
CMOS logic level input
When input is H, it will stop the receiving
VIO
5
PWDOWN
circuit, Pin-PD current and transmitting
LED operation.
VIO
VIO
PWDOWN
6
300k
RXD
Receiving Data Output Terminal
CMOS logic level output
When PWDOWN (5pin) = H, the RXD
output will be pulled up to
VIO at approximately 300kΩ.
VIO
Transmitting Data Input Terminal
7
TXD
600k
H : LED (PWDOWN = L)
CMOS logic level input
Holding TXD = "H"status, LED will
be turn off approximately 48µs.
LED ANODE Terminal
8
LEDA
−
Shield Case
LED
Other power source can be used
difference between LEDVCC and VCC.
This can be connected to battery kinds
of unregulated voltage source by internal
constant current driver.
Connect to Ground.
Rev.A
3/6
RPM872-H14
Photo Link Module
zElectrical characteristics (Unless otherwise noted, VCC=3V, VLEDA=3V, VIO=3V, Ta=25°C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Consumption Current 1
ICC1
−
75
99
µA
VPWDOWN = 0V. At no input light
Consumption Current 2
ICC2
−
0.01
0.2
µA
VPWDOWN = VIO. At no input light
2.4
−
115.2
kbps
−
VIO
V
Transmission rate
2/3∗VIO
Conditions
VIO = 1.8 to 3.6 [V]
PWDOWN INPUT High Voltage
VPDH
PWDOWN INPUT Low Voltage
VPDL
0
−
PWDOWN INPUT High Current
IPDH
−1.0
0
1.0
µA
PWDOWN = VIO [V]
PWDOWN INPUT Low Current
IPDL
−1.0
0
1.0
µA
PWDOWN = 0 [V]
2/3∗VIO
−
VIO
V
1.2
VIO = 1.5 to 1.8 [V]
1/3∗VIO
VIO−1.2
V
VIO = 1.8 to 3.6 [V]
VIO = 1.5 to 1.8 [V]
<Transmitter>
TXD INPUT High Voltage
VTXH
1.2
TXD INPUT Low Voltage
VTXL
−
0
VIO = 1.8 to 3.6 [V]
VIO = 1.5 to 1.8 [V]
1/3∗VIO
V
VIO−1.2
VIO = 1.8 to 3.6 [V]
VIO = 1.5 to 1.8 [V]
TXD INPUT High Current
ITXH
2.5
5
10
µA
TXD = VIO [V]
TXD INPUT Low Current
ITXL
−1.0
0
1.0
µA
TXD = 0 [V]
ILEDA
−
30.5
−
mA
RXD OUTPUT High Voltage
VRXH
VIO−0.4
−
VIO
V
IRXH = −200µA
RXD OUTPUT Low Voltage
VRXL
0
−
0.4
V
IRXL = 200µA
RXD OUTPUT Rise Time
tRR
−
35
−
ns
CL = 15pF
RXD OUTPUT Fall Time
tFR
−
35
−
ns
CL = 15pF
twRXD
1.5
2.3
4.2
µs
CL = 15pF, 2.4 to 115.2kbps
tRT
−
100
200
µs
LED ANODE Current
<Receiver>
RXD OUTPUT Pulse Width
Receiver Latency Time
zOptical characteristics (Unless otherwise noted, VCC=3V, VLEDA=3V, VIO=3V, Ta=25°C)
Parameter
Symbol
Min.
Typ.
Max.
Peak wave length
λP
850
870
900
nm
Intensity 1
IE1
4.0
10
26
mW / Sr
Half-Angle
θL / 2
−
±18
±30
deg
Optical pulse width
TWLED
1.42
1.63
2.02
µs
TXD=1.63µs pulse input
Rise time / Fall time
Tr / Tf
−
−
100
ns
10% to 90%
−
−
25
%
Edge jitter
Tj
−40
−
40
ns
Irradiance in angular
Ee
0.0068
−
500
INPUT Half-Angular
θD / 2
±15
−
−
deg
48
120
µs
Optical over shoot
Maximum Emitting Time
TLEDmax
10
Unit
Conditions
−15˚ ≤ θL ≤ 15˚
mW / cm2 −15˚ ≤ θL ≤ 15˚
TXD=VIO
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.
Rev.A
4/6
RPM872-H14
Photo Link Module
zTiming chart
(Emitting side)
TXD
(7pin)
more than 48 µs
less than 48 µs
(emitting)
(emitting)
(emitting)
Internal LED
(Light output)
approximately 48 µs
(Detecting side)
Light input
less than 2.3 µs
more than 2.3 µs
RXD
(6pin)
pull up to VIO at
approximately 300kΩ
approximately 2.3 µs
approximately 2.3 µs
PWDOWN
(5pin)
zRecommended values
Part symbol
C1
Recommended value
1µF, tantalum or ceramic
Ex.) TCFGA1A105M8R (ROHM)
Notice
Bigger capacitance is recommended with much noise from power supply
Rev.A
5/6
RPM872-H14
Photo Link Module
zNotes
1) VLEDA(8pin), VCC(3pin) and VIO(2pin)
•
Other power source can be used difference between VLEDA and VCC and VIO. (VIO < VCC +0.3V)
2) Caution in designing board lay-out
To get maximum potential from RPM872-H14, please keep in mind following instruction.
•
The line of RXD (6pin) should be connected at backside via through hole close to RPM872-H14 pin lead. Better not
to be close to photo diode side (1pin).
⇒This is to minimize feedback supplied to photo diode from RXD.
•
As for C1 between 3-4 pin should be placed close to RPM872-H14.
•
Better to be placed more than 1.0cm in radius from photo diode (pin1 side) and also away from the parts which
generates noise, such as DC / DC converter.
3) Others
•
Please be sure to set up the TXD (7pin) input to be “L” (under 0.3V) except transmitting data
(for < 90µs. On duty < 20%).
•
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 Ver1.2 (Low Power). There might be on error if used by
different signal format.
•
Dust or dirt on lens portion may affect the characteristics, so pay sufficient attention.
4) Eye Safe
•
IEC825-1 (EN60825-1) Class 1 Eye Safe.
zExternal dimensions (Unit : mm)
R1.1
R1.0
8.0
2.2
2.2
0.78
2.9
2.67
0.15±0.1
2.59
1
A Part Size (Shield Case underside size)
8
2.2
0.37±0.1
0.75
1.1
1.4
2.8
4.0
A
1.0
0.15±0.1
0.76
LED
PinPD
0.95
0.48
(0.13)
0.68±0.1
0.6
0.6±0.1
P0.95×7=6.65
NOTE
1.TOLERANCE : ±0.2mm
2.COPLANARITY : 0.1mmMAX
UNIT : mm
ETH648
Rev.A
6/6
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