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2.5 Gbps Single Mode Transceiver

C-1X-2500(C)-TDFB(3)-SSCX

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20550 Nordhoff St. • Chatsworth, CA 91311 • tel: 818.773.9044 • fax: 818.576.9486

9F, No 81, Shui Lee Rd. • Hsinchu, Taiwan, R.O.C. • tel: 886.3.5169222 • fax: 886.3.5169213

LUMNDS797-Dec0904

rev. A.0

LUMINENTOIC.COM

1

2

3

4

5

9

7

8

6

Rx Vcc

Tx Vcc

Transceiver

Top view

No internal

connection

No internal

connection

Z=50!

Z=50!

TD +

TD -

RD -

RD +

SD

Vcc

Z=50!

Z=50!

Tx Vcc

Rx Vcc

C1

C2

C3

C4

L1

L2

R2

R1

Rx Vcc

C5

Notes +3.3V:

C1=C2=C5=0.1"F

C3=C4=10"F

L1=L2=1"H

R1=130!

R2=82!

Notes +5V:

C1=C2=C5=0.1"F

C3=C4=10"F

L1=L2=1"H

R1=82!

R2=130!

Recommended Circuit Schematic

The split-loaded terminations for ECL signals need to be located at the input of devices receiving those ECL signals.

The power supply filtering is required for good EMI performance. Use short tracks from the inductor L1/L2 to the module Rx Vcc.

A GND plane under the module is required for good EMI and sensitivity performance.

1

2

3

4

5

9

7

8

6

Rx Vcc

Tx Vcc

Transceiver

Top view

No internal

connection

No internal

connection

TD +

TD -

RD -

RD +

SD

Vcc

Notes:

Tx Vcc

Rx Vcc

C1

C2

C3

C4

L1

L2

C-1X-2500C-TDFB(3)-SSCX

C-1X-2500-TDFB(3)-SSCX