RPM971-H14E3A Rohm Semiconductor, RPM971-H14E3A Datasheet - Page 7

• Manufacturer Part Number: RPM971-H14E3A
• Description: Fiber Optic Transmitters, Receivers, Transceivers IRDA IR COMM SIDE VIEW W/SHIELD
• Manufacturer: Rohm Semiconductor

Specifications of RPM971-H14E3A

• Product: Transceiver
• Data Rate: 4 Mbps
• Wavelength: 870 nm
• Maximum Rise Time: 20 ns
• Maximum Fall Time: 20 ns
• Pulse Width Distortion: 2.3 us
• Operating Supply Voltage: 2.4 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Idle Current, Typ @ 25° C: 1mA
• Link Range, Low Power: 20cm, 60cm
• Operating Temperature: -25°C ~ 85°C
• Orientation: Side View
• Shutdown: *
• Size: 8mm x 2.9mm x 2.2mm
• Standards: IrPHY 1.4
• Supply Voltage: 2.4 V ~ 3.6 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Photo Link Module
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 : VLEDV
necessary of irradiant intensity Ie1 [mW / sr]
R1 = 170 × (VLEDV
ILED = Duty × (VLEDV
Duty : LED duty at emitting
∗ Please set up to be ILED < 180[mA] (Duty ≤ 25%).
Part symbol
Block diagram and application circuit
Attached components
C1
R1
6.8µF, Ceramic or tantalum
Ex.)TCFGA1A685M8R(ROHM)
5.6Ω ±5%, 1/4W (LEDV
10Ω ±5%, 1/4W (LEDV
18Ω ±5%, 1/4W (LEDV
Recommended value
CC
− 1.45) / Ie1 −5 [Ω]
CC
− 1.36) / (R1+4) [A]
CC
CC
CC
=3.7V)
=5.0V)
=3.0V)
Bigger capacitance is recommended with
much noise from power supply.
Including LED's distribution within ±15deg.
POWER
DOWN
/Mode
Notice
LEDA
NC
TXD
RXD
PWDOWN/Mode
V
V
GND
CC
IO
C1
R1
RPM971-H14
CC
[V], minimum
TXD
RXD
PWDOWN
/Mode
V
V
GND
LEDV
CC
IO
CC
7/8