25G SFP28 Active optical cable JHA-SFP28-25G-AOC
Nta
◊ Hluav taws xob cuam tshuam raws li SFF-8431
◊ 850nm VCSEL laser thiab PIN yees duab ntes
◊ Qhov siab tshaj plaws txuas ntev ntawm 70m ntawm OM3 MMF thiab 100m ntawm OM4 MMF
◊ Digital diagnostics functions muaj nyob ntawm I2C interface
◊ Kev ua haujlwm kub ua lag luam: 0 ° C txog +70 ° C
◊ + 3.3V ib qho fais fab mov
◊ Kev siv hluav taws xob tsawg dua 1W
◊ Raws li RoHS
◊ Kev tiv thaiv tus password rau A0h thiab A2h
Daim ntawv thov
◊ 25GBASE-SR Ethernet
◊ Servers, keyboards, cia thiab host card adapters
Specification
Qhov siab tshaj qhov ntsuas
Table1- Cov qhab nia siab tshaj plaws
| Parameter | Cim | Min. | Hom | Max. | Chav tsev | Sau ntawv |
| Cov khoom siv hluav taws xob | vcc 3 | -0.5 | - | +3.6 | V | |
| Cia Kub | Ts | -10 | - | +70 | °C | |
| Kev khiav dej num | RH | +5 | - | +85 | % | 1 |
Lus Cim: 1 Tsis muaj condensation
Pom zoo rau kev ua haujlwm
| Parameter | Cim | Min. | Hom | Max. | Chav tsev | Sau ntawv |
| Kev khiav hauj lwm Case Temperature | TC | 0 | - | +70 | °C | |
| Fais fab mov Voltage | Vcc | 3.14 | 3.3 | 3.47 ib | V | |
| Fais fab mov tam sim no | Icc | - | - | 300 | mA | |
| Lub zog Dissipation | Pd | - | - | 1.0 | W | |
| Tus nqi qis | BR | 8.5 | 25.78125 ib | - | Gbps | |
| Fiber Khoov Radius | Rb | 3 | - | - | cm |
Rooj2- Pom zoo ua hauj lwm tej yam kev mob
Cov yam ntxwv hluav taws xob
Rooj3- Cov yam ntxwv hluav taws xob
| Parameter | Cim | Min. | Ntaus. | Max. | Chav tsev | Sau ntawv | ||||
| Transmitter | ||||||||||
| Differential Data Input viav vias | Vin, PE | 200 | - | 1600 | mVPP | |||||
| Input Differential Impedance | ZIN | 90 | 100 | 110 | Ω | |||||
| Tx_Fault | Kev ua haujlwm li qub | VOL | 0 | - | 0.8 ua | V | ||||
| Transmitter txhaum | VOH | 2.0 | - | VCC | V | |||||
| Tx_Disable | Kev ua haujlwm li qub | VIL | 0 | - | 0.8 ua | V | ||||
| Laser Disable | VIH | 2.0 | - | VCC+0.3 | V | |||||
| Tus txais | ||||||||||
| Differential Date Output | Vout | 400 | - | 800 | mV | |||||
| Cov zis sib txawv impedance | ZD | 90 | 100 | 110 | Ω | |||||
| Rx_LOS | Kev ua haujlwm li qub | VOL | 0 | - | 0.8 ua | V | ||||
| Poob Signal | VoH | 2.0 | - | VCC | V | |||||
Optical yam ntxwv
Rooj4-Optical yam ntxwv
| Parameter | Cim | Chav tsev | Min | Ntaus | Max | Sau ntawv |
| Optical transmitter yam ntxwv | ||||||
| Tus nqi qis | BR | Gbps | 8.5 | 25.78125 ib | - | |
| Center Wavelength Range | lwj c | nm | 820 | 850 | 880 ua | |
| Nruab nrab Launch zogTx_off | Poff | dBm ib | - | - | -45 | |
| Tua tawm Optical Power | P0 | dBm ib | -6.0 | 2.4 | 1 | |
| Extinction Ratio | ER | dB | 2 | - | - | |
| Spectral Dav (RMS) | RMS | nm | - | - | 0.65 ib | |
| Optical Receiver yam ntxwv | ||||||
| Tus nqi qis | BR | Gbps | 8.5 | 25.78125 ib | ||
| Me ntsis yuam kev Rate | BER | - | - | E-12 | ||
| Kev puas tsuaj pib | DT | dBm ib | 3.4 | - | - | |
| Overload Input OpticalHwj chim | PIN | dBm ib | 2.4 | - | - | 2 |
| Center Wavelength Range | lwj c | nm | 820 | - | 880 ua | |
| Receiver Sensitivity nyob rau hauvLub zog nruab nrab | Sen | dBm ib | - | - | -5.2 | 3 |
| Los Assert | LosA | dBm ib | -30 | - | - | |
| Los De-Assert | LosD | dBm ib | - | - | -13 | |
| Los Hysteresis | LosH | dB | 0.5 |
Nco tseg:
- Muab tso rau hauv 50/125 MMF.
- Ntsuas nrog PRBS 231-1 test pattern @25.78125Gbps.BER=E-12 3. BER=1 × 10-12; PIB 231-1@25.78125Gbps.
Pom zoo Host Board Power Supply Circuit
Daim duab 1, Pom zoo Host Board Power Supply Circuit
Pom zoo Interface Circuit Court
Daim duab 2, pom zoo Interface Circuit Court
Pin kev npaj
Daim duab 3, Pin View
Rooj5- Pin Function
Lus txhais
| Pin | Cim | Lub npe / piav qhia | Sau ntawv |
| 1 | VEET | Module Transmitter Av | 1 |
| 2 | TX_FAULT | Module Transmitter Fault | 2 |
| 3 | TX_DISABLE | Transmitter Disable;Tua tawm transmitter laser tso zis | 3 |
| 4 | SDA | 2-Wire Serial Interface Cov Ntaub Ntawv Kab (MOD-DEF2) | |
| 5 | SCL | 2-Wire Serial Interface Clock (MOD-DEF1) | |
| 6 | MOD_ABS | Module Absent, txuas nrog VEET lossis VEER hauv lub module | 2 |
| 7 | RS 0 | Rate Xaiv 0, xaiv tau tswj SFP + module txais | 4 |
| 8 | RX_LOS | Txais Cov Lus Qhia Tsis Pom Zoo (Hauv FC raug xaiv raws li Rx_LOS thiab hauv Ethernet xaiv los tsis pom teeb liab) | 2 |
| 9 | RS 1 | Rate Xaiv 1, xaiv tau tswj SFP + module transmitter | 4 |
| 10 | VEER | Module txais av | 1 |
| 11 | VEER | Module txais av | 1 |
| 12 | RD- | Receiver Inverted Data Output | |
| 13 | RD+ | Receiver Non-Inverted Data Output | |
| 14 | VEER | Module txais av | 1 |
| 15 | VCCR | Module Receiver 3.3 V Supply | |
| 16 | VCCT | Module Transmitter 3.3 V Supply | |
| 17 | VEET | Module Transmitter Av | 1 |
| 18 | TSI + | Transmitter Tsis-Inverted Data Input | |
| 19 | TD- | Transmitter Inverted Data Input | |
| 20 | VEET | Module Transmitter Av | 1 |
Nco tseg:
- Module av pins yog cais los ntawm lub module cas.
- Cov tus pin yuav be rub up nrog 4.7K-10 Khob to a hluav taws xob nruab nrab 3,14v ib 3, 46v on tus tswv tsev lub rooj tsavxwm.
- Tus pin yog rub mus rau VCCT nrog 4.7K-10KΩ resistor nyob rau hauv module.
- Saib SFF-8472 Rev12.2 Table 10-2.
Kev soj ntsuam Specification
Daim duab 4, Memory Map
Mechanical Design Diagram
Rooj5- Kab
Ntev
| Cable NtevL(Unit: m) | Ua siab ntev(Unit: cm) |
| ≤1.0 | +5/-0 |
| 1.0＜L≤4.5 | +15/-0 |
| 4.5＜L≤14.5 ib | +30/-0 |
| ＞ 14.5 | + 2% /-0 |
Ceeb toom
Kev Tiv Thaiv Kev Tiv Thaiv: Cov cuab yeej no raug kev puas tsuaj los ntawm electrostatic paug (ESD).
Ib puag ncig dawb zoo li qub tau pom zoo.Ua raws li cov lus qhia raws li cov txheej txheem ESD.
Laser Kev Nyab Xeeb: Cov hluav taws xob tawm los ntawm cov khoom siv laser tuaj yeem ua rau muaj kev phom sij rau tib neeg lub qhov muag.Tsis txhob pom qhov muag raug hluav taws xob ncaj qha lossis tsis ncaj qha.
