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PDF RPM970-H14 Data sheet ( Hoja de datos )
| Número de pieza | RPM970-H14 | |
| Descripción | IrDA Infrared Communication Module | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Photo Link Module
RPM970-H14
IrDA Infrared Communication Module
RPM970-H14
RPM970-H14 is an infrared communication module for IrDA Ver. 1.3 (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) 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 (0.576,1.152Mbps) and FIR(4Mbps).
3) Surface mount type.
4) Power down function built in.
5) Adjustable communication distance by LED load resistance value.
zApplications
Cellular phone, PDA, DVC, Digital still camera, Printer, Handy terminal etc.
zAbsolute maximum ratings (Ta=25°C)
Parameter
Supply voltage
Symbol
Vcc / VLEDA / VIO
Limits
6.5 ∗1
Units
V
Input voltage
Vin(3,4,5pin)
−0.3 to VIO+0.3
V
Operation temperature
Topr
−25 to 85
°C
Storage temperature
Tstg
−30 to 100
°C
LED peak current
Ifp
400∗2
mA
Power dissipation
Pd
300∗3
mW
∗1) This applies to all pins basis ground pin (8pin).
∗2) LED Peak Current : < 90 µs, On duty < 25%
∗3) When glass-epoxy board (70x70x1.6mm) mounted. In case of operating environment is over 25°C, 4mW
would be reduced per each 1˚C stepping up.
zRecommended operating conditions
Parameter
Symbol Min. Typ. Max. Units
Supply voltage
VCC
VLEDA
VIO
2.4 3.0 3.6
2.7 3.0 5.5
1.7 3.0 VCC
V
V
V
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Photo Link Module
RPM970-H14
zTiming chart
Mode Setting (SIR / MIR / FIR)
With RPM970-H14 there is a need for mode switch according to communication rate. For the mode setting, there 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
PWDOWN
/ Mode
tdmax=200µs
FIR Mode
(4Mbps)
TXD
Mode
ts => 200ns ts => 200ns
tdmax=200µs
SIR / MIR Mode
(9.6k-1.152Mbps)
Fig. 1
zAttached components
Part symbol
Recommended value
6.8µF, Ceramic or tantalum
C1
Ex.)TCFGA1A685M8R (ROHM)
Notice
Bigger capacitance is recommended with much noise from power supply
R1
5.6Ω ± 5%, 1/4W
(VLEDVCC=3.0V)
More than 50cm distance, more than 10µW/cm^2 at detecting side. (vs ver1.1)
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] necessary d[cm] (Including LED's distribution
within ± 15 deg)
R1=T (VLEDVCC-1.45) / d2 − 5 [Ω]
ILED=Duty (VLEDVCC−1.36) / (R1+4) [A]
Duty : LED duty at emitting, T=17000
∗ At LED / Duty<180mA
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| PDF Descargar | [ Datasheet RPM970-H14.PDF ] | |
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