V23839-R3x-L55

Application Notes

Preliminary Product Information

32

2004-06-25

Multimode 850 nm iSFF Transceiver, AC/AC TTL

Figure 8

Example iSFF Host Board Schematic and

Recommended Host Board Supply Filtering Network

PLD / PAL

1) Design criterion of the capacitor used is the resonant frequency and its value must be in the order of the nominal

data rate. Use of single layer capacitors recommended. Short trace lengths are mandatory.

2) Not implemented.

ASIC IC

Tx Disable

3.3 V

6

10

9

5

4

3

C

AB

8

D

7

1

2

3.3 V

0.1 µF

0.1 µF

0.1 µF

0.1 µF

10 µF

SDA

File: 1321

SCL

4.7 to

10 k

Ω

4.7 to

10 k

Ω

Pre-Amp./

Post Amp.

Diagnostic IC / EEPROM

Laser

Driver

1 µH

1 µH

Tx Fault

Protocol IC

SD

Tx Disable

Tx Fault

TD–

TD+

RD+

RD–

SD

Infineon

iSFF

Transceiver

Host Board

0.1 µF

0.1 µF

10 µF

0.1 µF

xx 1)

xx 1)

100

Ω

4.7 to

10 k

Ω

4.7 to

10 k

Ω

4.7 to

10 k

Ω

100

Ω