Optoway

SPB-8805LWG

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Tel: 886-3-5979798

Fax: 886-3-5979737

E-mail: sales@optoway.com.tw

http: // www.optoway.com.tw

1/1/2008

V2.0

3

Receiver Specifications (0

Parameter

Symbol

Min

Typ

Max

Units

Notes

Optical

Sensitivity @ 4.25 Gb/s

Sen1

---

---

29

-18

µW

dBm

4

5

Sensitivity @ 2.125 / 1.063 Gb/s

Sen2

---

---

15

-20

µW

dBm

4

5

Maximum Input Power

Pin

0

---

---

dBm

Signal Detect -- Asserted

Pa

---

---

-18

dBm

Transition: low to high

Signal Detect -- Deasserted

Pd

-30

---

---

dBm

Transition: high to low

Signal detect -- Hysteresis

1.0

---

dB

Wavelength of Operation

1480

1500

nm

6

Optical Return Loss

ORL

14

dB

Electrical

Differential Output Voltage

0.6

2.0

V

Output LOS Voltage -- Low

0

0.5

V

7

Output LOS Voltage – High

2.0

Vcc+0.3

V

7

Signal Detect Assert Time

100

µs

OFF to ON

Signal Detect Deassert Time

300

µs

ON to OFF

4. Measured at PRBS 2

5. Represents sensitivity based on OMA spec, as corrected to incoming Extinction Ratio of 9 dB. For example, an OMA of 29

µW is

approximately equal to an average power of -17.3 dBm, average with an Extinction ratio of 9 dB.

6. At least 30 dB optical isolation for the wavelength 1260 to 1360 nm.

7. Open collector compatible, 4.7K to 10K ohm pull-up to Vcc (Host Supply Voltage).

RECOMMENDED CIRCUIT SCHEMATIC

10nF

10

μF

10nF

10

μF

VeeR

POST

Amp

LD

Driver

Z=50

Ω

Z=50

Ω

Z=50

Ω

Z=50

Ω

VeeT

1

μH

1

μH

TD -

TD +

VccT

VccR

RD -

RD +

100

Ω

SFP module

SerDes

100

Ω

LOS

RD -

RD +

TD -

TD +

10nF

10

μF

Protocol

EEPROM

MODULE DETECT

SCL

SDA

LOSS OF SINGAL

Tx_DISABLE

Tx_FAULT

MOD_DEF(0)

MOD_DEF(1)

MOD_DEF(2)

4.7K to 10K

Ω

4.7K to 10K

Ω

4.7K to 10K

Ω

4.7K to 10K

Ω

Tx_FAULT

Tx_DISABLE

(1,17,20)

3

2

18

19

16

15

12

13

8

(9,10,11,14)

6

5

4

4.7K to 10K

Ω

Vcc 3.3V

Vcc 3.3V

IC

IC

depending on SERDES