V23849-R3x-C55

Application Notes

Preliminary Product Information

32

2004-06-28

Multimode 850 nm iSFP™ Transceiver, AC/AC TTL

Figure 7

Example iSFP™ 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

16

19

18

13

12

8

7

65

4

3

2

1/17/20

9/10/11/14

15

3.3 V

0.1 µF

0.1 µF

0.1 µF

0.1 µF

10 µF

MOD-DEF(0)

File: 1319

MOD-DEF(1)

MOD-DEF(2)

4.7 to

10 k

Ω

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

LOS

Tx Disable

Tx Fault

TD–

TD+

RD+

RD–

LOS

Infineon

iSFP™

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