1.25Gbps SFP BIDI Optical Transceiver 20Km,40Km,80Km LC DDM
Feature:
• Gi Obit Ethernet
• Gi Obit Fiber Channel
• SFP MSA package with Simplex LC connector
• Compliant with IEEE 802.3ah,
• Digital diagnostic monitor interface compatible with SFF-8472
• transmission with 9/125 µm SMF
• Single 3.3V Power Supply and LVTTL Logic
• Very low EMI and excellent ESD protection
• Operating Case Temperature: 0°C ~+70°C
• RoHS compliant
• Class 1 laser safety certified
Application:
• Ethernet
• Telecom
• Fiber Channel
Absolute Maximum Ratings:
Parameter Symbol Mi Ty Max Unit not
l n p e
Storage Temperature Ts -40 85 ºC
Storage Ambient Humidity HA 5 95 %
Power Supply Voltage VCC -0.5 4 V
Signal Input Voltage -0.3 Vcc+0. 3 V
Receiver Damage Threshold 5 dB m
Operation Environment:
Parameter Symbol Min Ty p Max Unit note
Case Operating Temperature T case 0/40 70/85
Ambient Humidity HA 5 70 % Non-condensing
Power Supply Voltage VCC 3.13 33 3.47 V
Power Supply Current ICC 280 mA
Power Supply Noise Rejection 10 0 M V P-P 100Hz to1MHz
Data Rate 1.25 Gbps TX Rate/RX Rate
Transmission Distance 0.55 120 KM
Coupled Fiber Multi or Single mode fiber
Optical Characteristics:
(Ambient Operating Temperature 0˚ C to +70˚ C, Vcc =3.3 V)
Parameter Symbol Min Type Max Unit note
Average Output Power
Pout -9.5 -3 dBm 0.55km 850nm
-9 -3 dBm 3km 1310nmFP
-9 -3 dBm 3km 1550nmFP
-9 -3 dBm 10km 1310nmFP
-9 -3 dBm 10km 1490nmDFB
-9 -3 dBm 10km 1550nmDFB
-2 +3 dBm 40km 1310nmDFB
-5 0 dBm 40km 1490nmDFB
-5 0 dBm 40km 1550nmDFB
-2 +3 dBm 80km 1490nmDFB
-2 +3 dBm 80km 1550nmDFB
Extinction Ratio ER 9 dBm
Electrical Characteristics:
(Ambient Operating Temperature 0˚ C to +70˚ C, Vcc =3.3 V)
Parameter Symbol Min. Typ. Max. unit
Transmitter Section
Input Differential Impendence Zin 90 100 110 Ohm
Data Input Swing Differential Vin 500 2400 mV
TX Disable Disable 2.0 Vcc V
Enable 0 0.8 V
TX Fault Assert 2.0 Vcc V
Deassert 0 0.8 V
Receiver Section
Output differential impendence Zout 100 Ohm
Data Input Swing Differential Vout 370 2000 mV
Rx LOS Assert 2.0 Vcc V
Deassert 0 0.8 V
Center Wavelength
λC 1270 1310 1360 nm 1310nm FP
1290 1310 1330 nm 1310nm DFB
1520 1550 1580 nm 1550nm DFB
Spectrum Width (RMS) σ 4 nm FP Laser (TX:1310nm)
Spectrum Bandwidth(-20dB) σ 1 nm 1550nm DFB
1 nm 1490nm DFB
1 nm 1310nm DFB
Transmitter OFF Output Power Poff -45 dBm
Differential Line Input Impedance Rin 90 10
0 110 0hm
Total Jitter (Peak-Peak) tJ 41 PS Note (1)
Output Eye Mask Compliant with IEEE802.3z (class 1 laser safety) Note (1)
Note: (1): Measure at 2^7-1 NRZ PRBS pattern Note (2): Transmitter eye mask definition
Specification of Receiver:
Parameter Symbol Min Type Max Uni t note
Input Optical Wavelength λIN 1270 1310 1610 n m
Receiver Sensitivity PIN -22/-2 4 d Bm 15km~80kmNote (1)
-30 120km Note (1)
Input Saturation Power (Overload) PSA T - 3 d Bm
Los Of Signal Assert PA - 35 d Bm PIN Receiver
Los Of Signal De-assert PD -25 d Bm PIN Note (2)
LOS Hysteresis PA-P D 0. 5 6 d B
Note (1): Measured with Light source 1550nm(1310nm), ER=10dB; BER =<10^-12 @PRBS=2^7-1NRZ Note (2): When LOS de-asserted, the RX data+/- output is High-level (fixed)
Electrical Characteristics:
(Ambient Operating Temperature 0C to +70C, Vcc =3.3 V)
Parameter Symbol Min. Typ. Max. unit
Transmitter Section
Input Differential Impendence Zin 90 100 110 Ohm
Data Input Swing Differential Vin 500 2400 mV
TX
Disable Disable 2.0 Vcc V
Enable 0 0.8 V
TX Fault Assert 2.0 Vcc V
Deassert 0 0.8 V
Receiver Section
Output differential impendence Zout 100 Ohm
Data Input Swing Differential Vout 370 2000 mV
Rx_LOS Assert 2.0 Vcc V
Deassert 0 0.8 V
Epsom Information(A0):
Add Field Size (Bytes) Name of Fiel HEX Description
0 1 Identifier 03 SFP
1 1 Ext. Identifier 04 MOD4
2 1 Connector 07 LC
3-10 8 Transceiver 00 00 00 02 12 00 0D 0 Transmitter Code
11 1 Encoding 02 4B5B
12 1 BR, nominal 04 E2 1250M bps
13 1 Reserved 00
14 1 Length (9um)-km 14 20km
15 1 Length (9um) 64
16 1 Length (50um) 00
17 1 Length (62.5um) 00
18 1 Length (copper) 00
19 1 Reserved 00
20-35 16 Vendor name 57 49 4E 54 4F 50 20 20
36 1 Reserved 00
37-
39 3 Vendor OUI 00 00 00
40-55 16 Vendor PN xx xx xx xx xx xx xx x x ASC II
56-
59 4 Vendor rev 31 2E 30 20 V1.0
60-
61 2 Wavelength 05 1E/06 0E 1310nm/1550nm
62 1 Reserved 00
63 1 CC BASE XX Check sum of byte 0~62
64-
65
2
Options
00 1A LOS, TX_DISABLE, TX_FAULT
66 1 BR, max 32 50%
67 1 BR, min 32 50%
68-
83
16
Vendor SN 00 00 00 00 00 00 00 00
Unspecified
84-
91 8 Vendor date code XX XX XX 20 Year, Month, Day
92-
94 3 Reserved 00
95 1 CC-EXT XX Check sum of byte 64-94
Diagnostics:
Parameter Range Accuracy Unit Calibration
Temperature C -5 ~ 70 ±3
ºC
Internal
I -40 ~ 80 ±3
Voltage 0 ~ VCC 0.1 V Internal
Bias Current 0 ~ 120 ±2 mA Internal
Tx Power -5 ~ 0 ±1 dBm Internal
Rx Power <0 ±1 dBm Internal
Pin Description:
Pin Symbol Name/Description Ref
1 VEET Transmitter Ground (Common with Receiver Ground) 1
2 TFAUL T Transmitter Fault. 2
3 TDIS Transmitter Disable. Laser output disabled on high oropen.
4 MOD_ DEF(2) Module Definition 2. Data line for Serial ID. 3
5 MOD_ DEF(1) Module Definition 1. Clock line for Serial ID. 3
6 MOD_ DEF(0) Module Definition 0. Grounded within the module 3
7 Rate Select No connection required 4
8 LOS Loss of Signal indication. Logic 0 indicates normal operation. 5
9 VEER Receiver Ground (Common with Transmitter Ground) 1
10 VEER Receiver Ground (Common with Transmitter Ground) 1
11 VEER Receiver Ground (Common with Transmitter Ground) 1
12 RD- Receiver Inverted DATA out. AC Coupled
13 RD+ Receiver Non-inverted DATA out. AC Coupled
14 VEER Receiver Ground (Common with Transmitter Ground) 1
15 VCCR Receiver Power Supply
16 VCCT Transmitter Power Supply
17 VEET Transmitter Ground (Common with Receiver Ground) 1
18 TD+ Transmitter Non-Inverted DATA in. AC Coupled.
19 TD- Transmitter Inverted DATA in. AC Coupled.
20 VEET Transmitter Ground (Common with Receiver Ground) 1
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. Laser output disabled on T DIS >2.0V or open, enabled on T DIS <0.8V.
3. Should be pulled up with 4.7k - 10kohms on host board to a voltage between 2.0V and3.6V. MOD_DEF (0) pulls line low to indicate module is plugged in.
4. This is an optional input used to control the receiver bandwidth for compatibility with multiple data rates (most likely Fiber Channel 1x and 2x Rates). Ifimplemented, the input will be internally pulled down with > 30kΩ resistor. The input states are: Low (0 – 0.8V): Reduced Bandwidth (>0.8V,<2.0V):Undefined High(2.0– 3.465V):FullBandwidth Open: Reduced Bandwidth
5. LOS is open collector output. Should be pulled up with 4.7k - 10kohms on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
Recommended Application Circuit: Outline drawing (mm):
Ordering information:
Part Number Product Description
1.25SF1310-20LAT SFP 1.25G Tx1310nm/Rx1550nm 20km LC DDM
1.25SF1550-20LAT SFP 1.25G Tx1550nm/Rx1310nm 20km LC DDM
1.25SF1310-40LAT SFP 1.25G Tx1310nm/Rx1550nm 40km LC DDM
1.25SF1550-40LAT SFP 1.25G Tx1550nm/Rx1310nm 40km LC DDM
1.25SF1310-80LAT SFP 1.25G Tx1490nm/Rx1550nm 80km LC DDM
1.25SF1550-80LAT SFP 1.25G Tx1550nm/Rx1490nm 80km LC DDM
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