ROHM RPM870-H7 Datasheet
RPM870-H7
Photo Link Module
IrDA wireless communication transceiver
IC (supports Ver. 1.2 Low Power)
RPM870-H7
The RPM870-H7 is an Module that supports IrDA Ver. 1.2 (Low Power), and is ideal for wireless communications.
An infrared LED, a pin-photo diode, and a receiver frequency formation LSI are all contained in a very small single
package. It is also equipped with low power consumption and power down functions making this IC perfect for mobile
sets.
!!!!
Features
1) Supports IrDA Ver. 1.2. (Low Power)
2) Low power consumption while standing by for receiving (75µA Typ.).
3) A power-down function is perfect for battery applications.
4) Supports a board power supply voltage range from 2.6V to 3.6V.
5) Only 1 external capacitor required.
!!!!Applications
Mobile phones, PDAs, and others
!!!!Absolute maximum ratings (Ta = 25°C)
Parameter Symbol Limits Unit
Supply voltage V
Input voltage Vin
Operating temperature
Storage temperature
LED peak current
Power dissipation
∗1 LED peak current : <90µsec, on duty < 20%
CC
Topr
Tstg
Ifp
Pd
−0.3~V
−20~+85
−30~+100
!!!!Recommended operating conditions (Ta = 25°C)
Parameter Symbol Min.
Supply voltage
CC
V
V
LEDA
Typ.
3.0
3.0
7.0
CC
120
100
+0.3
∗1
Max. Unit
V
V
°C
°C
mA
mW
V2.6 3.6
V2.6 5.5
Photo Link Module
!!!!
Block diagram and application circuit
AMP
RPM870-H7
GND
1
NC
234567
Recommended values
Part symbol
C1
Recommended value Notice
1µF, tantalum
Ex.) TCFGA1A105M8R (ROHM)
AMPAMP
V
POWER
DOWN
CC
GND
PWDOWN
RXD
TXD
LEDA
8
C1
V
CC
GND
PWDOWN
RXD
TXD
(LEDV
Bigger capacitance is recommended with much noise from power supply
CC
)
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