RPM960-H14
Photo Link Module
Rev.C
2/5
Block diagram and application circuit
POWER
DOWN
TXD
TXD
VCC(6pin) and LEDVCC(1pin) can be used on either common
power source or different one.
RXD
C1
LEDA
LEDC
RXD
PWDOWN
VCC
VIO
GND
PWDOWN
VCC
VIO
GND
R1
LEDVCC
Recommended values
Part symbol
C1
Recommended value
Notice
6.8礔, Ceramic or tantalum
Ex.) TCFGA1A685M8R (ROHM)
Bigger capacitance is recommended with much noise from power supply.
R1
5.6& ?%,1/4 W(LEDVCC=3.0V)
More than 50cm distance, more than 10礧/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[&], LED's average consumption current : ILED[mA], Supply voltage : LEDVCC[V]
necessary d[cm] (Including LED's distribution within ?5 deg)
R1=T (LEDVCC1.45) / d
2
5[&]
ILED=Duty (LEDVCC1.36) / (R1+4) [A]
Duty : LED duty at emitting, T=17000
At ILED / Duty < 180 mA
+
+
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