Preliminary Product Information

Infineon AG

CONFIDENTIAL

2-Dec-02

Oasis SiliconSystems AG

Page 5

SPF MIR3 02

Application Circuit:

*1) Place these components as close

as possible to their corresponding

pins of the FOT.

*2) Values can change due to different

light output power of the LED.

*3) This is just a proposal for the Rext

application. There can be used also

other circuits to switch Rext from

15K to 30K.

Design & Layout rules:

• The 100nF bypass capacitors of the FOTs must be located as close as possible between the pins

• Also the inductor/ ferrite bead (receiver) and the -3dB - control circuit (transmitter) must be placed

as close as possible to the FOTs. We prefer ferrite beads (e.g. type 74279214 Würth Elektronik)

since the D.C. resistance is very low. In case other inductors are used, the D.C. resistance should

be less than 3Ohm.

• For EMC, a ferrite bead should be connected to the power supply, close to the transmitter and the

receiver. Do not use only one ferrite bead together for receiver and transmitter!