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SPB-8940LG_2015 Datasheet, PDF (3/6 Pages) Optoway Technology Inc – 4.25 Gbps 1-Fiber SMLC SFP Transceiver
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Optoway
3
SPB-8940LG
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Receiver Specifications (0oC < Topr < 70oC, 3.13 V < Vcc < 3.47V)
Parameter
Symbol
Min
Typ
Max
Units
Notes
Optical
Sensitivity @4.25Gbps
Sen1
---
---
29
µW
4
-18
dBm
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
Wavelength of Operation
1.0
---
dB
1260
1360
nm
6
Optical Return Loss
ORL
14
dB
Electrical
Differential Output Voltage
VOH – VOL
0.6
2.0
V
Output LOS Voltage -- Low
Output LOS Voltage – High
VOL
0
VOH
2.0
Signal Detect Assert Time
ASMAX
0.5
V
Vcc+0.3
V
100
µs
7
7
OFF to ON
Signal Detect Deassert Time
ANSMAX
300
µs
ON to OFF
4. Measured at PRBS 27-1 at BER 1E-12.
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 1480 to 1580 nm.
7. Open collector compatible, 4.7K to 10K ohm pull-up to Vcc (Host Supply Voltage).
RECOMMENDED CIRCUIT SCHEMATIC
VeeT
Tx_DISABLE
Tx_FAULT
(1,17,20)
3
2
4.7K to 10KΩ
LD
Driver
100Ω
TD + 18
TD - 19
VccT 16
10nF
VccR 15
10nF
Z=50Ω
Z=50Ω
1μH
10μF
10nF
1μH
10μF
TD +
TD -
Vcc 3.3V
10μF
SerDes
IC
Tx_DISABLE
Tx_FAULT
Protocol
IC
RD - 12
POST
Amp
RD + 13
4.7K to 10KΩ
LOS 8
Z=50Ω
RD -
100Ω
Z=50Ω
RD +
depending on SERDES
EEPROM
VeeR (9,10,11,14)
MOD_DEF(0) 6
MOD_DEF(1) 5
MOD_DEF(2) 4
SFP module
4.7K to 10KΩ
4.7K to 10KΩ
4.7K to 10KΩ
Vcc 3.3V
LOSS OF SINGAL
MODULE DETECT
SCL
SDA
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OPTOWAY TECHNOLOGY INC. No.38, Kuang Fu S. Road, Hu Kou, Hsin Chu Industrial Park, Hsin Chu, Taiwan 303
Tel: 886-3-5979798
Fax: 886-3-5979737
E-mail: sales@optoway.com.tw http: // www.optoway.com.tw 1/1/2008 V2.0
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