25G SFP28 kabel optik aktip JHA-SFP28-25G-AOC
Fitur
◊ panganteur listrik patuh kana SFF-8431
◊ 850nm VCSEL laser jeung PIN poto-detektor
◊ Panjang link maksimum 70m on OM3 MMF na 100m on OM4 MMF
◊ fungsi diagnostics digital sadia via panganteur I2C
◊ Operasi hawa bisi komérsial: 0 °C nepi ka +70 °C
◊ + 3.3V catu daya tunggal
◊ Konsumsi kakuatan kirang ti 1W
◊ RoHS patuh
◊ panyalindungan Sandi pikeun A0h na A2h
Aplikasi
◊ 25GBASE-SR Ethernet
◊ Server, saklar, neundeun jeung adaptor kartu host
Spésifikasi
Peunteun Maximum Absolute
Table1- Peunteun Maximum Absolute
| Parameter | Lambang | Min. | has | Max. | Unit | Catetan |
| Tegangan suplai | Vcc3 | -0,5 | - | +3.6 | V | |
| Suhu Panyimpenan | Ts | -10 | - | +70 | °C | |
| Kalembaban Operasi | RH | +5 | - | +85 | % | 1 |
Catetan: 1 Taya kondensasi
Disarankeun Kaayaan Operasi
| Parameter | Lambang | Min. | has | Max. | Unit | Catetan |
| Suhu Kasus Operasi | TC | 0 | - | +70 | °C | |
| Tegangan catu daya | Vcc | 3.14 | 3.3 | 3.47 | V | |
| Power Supply Ayeuna | Icc | - | - | 300 | mA | |
| Dissipation kakuatan | Pd | - | - | 1.0 | W | |
| Bit Rate | BR | 8.5 | 25.78125 | - | Gbps | |
| Radius Bend Serat | Rb | 3 | - | - | cm |
Méja2- Disarankeun kaayaan operasi
Karakteristik listrik
Méja3- Karakteristik listrik
| Parameter | Lambang | Min. | Tip. | Max. | Hijian | Catetan | ||||
| Pamancar | ||||||||||
| Diferensial Data Input ayun | Vin, PP | 200 | - | 1600 | mVPP | |||||
| Input impedansi diferensial | ZIN | 90 | 100 | 110 | Ω | |||||
| Tx_Fault | Operasi Normal | VOL | 0 | - | 0.8 | V | ||||
| Kasalahan pamancar | VOH | 2.0 | - | VCC | V | |||||
| Tx_Disable | Operasi Normal | VIL | 0 | - | 0.8 | V | ||||
| Laser Nonaktipkeun | VIH | 2.0 | - | VCC+0.3 | V | |||||
| panarima | ||||||||||
| Kaluaran Tanggal diferensial | Vout | 400 | - | 800 | mV | |||||
| Kaluaran impedansi diferensial | ZD | 90 | 100 | 110 | Ω | |||||
| Rx_LOS | Operasi Normal | VOL | 0 | - | 0.8 | V | ||||
| Kaleungitan Sinyal | VoH | 2.0 | - | VCC | V | |||||
Ciri optik
Méja4-Ciri optik
| Parameter | Lambang | Unit | Min | Tip | Max | Catetan |
| Karakteristik pamancar optik | ||||||
| Bit Rate | BR | Gbps | 8.5 | 25.78125 | - | |
| Puseur Panjang Gelombang Range | λc | nm | 820 | 850 | 880 | |
| kakuatan peluncuran rataTx_off | Poff | dBm | - | - | -45 | |
| Ngajalankeun kakuatan optik | P0 | dBm | -6.0 | 2.4 | 1 | |
| Rasio punah | ER | dB | 2 | - | - | |
| Lebar spéktral (RMS) | RMS | nm | - | - | 0.65 | |
| Karakteristik panarima optik | ||||||
| Bit Rate | BR | Gbps | 8.5 | 25.78125 | ||
| Laju Kasalahan Bit | BER | - | - | E-12 | ||
| bangbarung ruksakna | DT | dBm | 3.4 | - | - | |
| Overload Input optikKakuatan | PIN | dBm | 2.4 | - | - | 2 |
| Puseur Panjang Gelombang Range | λc | nm | 820 | - | 880 | |
| Sensitipitas panarima dinaDaya Rata | Sen | dBm | - | - | -5.2 | 3 |
| Los Negeskeun | LosA | dBm | -30 | - | - | |
| Los De-Assert | LosD | dBm | - | - | -13 | |
| Los Hysteresis | LosH | dB | 0.5 |
Catetan:
- Gandeng kana 50/125 MMF.
- Diukur ku PRBS 231-1 pola uji @25.78125Gbps.BER=E-12 3. BER=1×10-12; PRBS231-1@25.78125Gbps.
Disarankeun Host Board Power Supply Circuit
angka 1, Disarankeun Host Board Power Supply Circuit
Disarankeun Interface Circuit
angka 2, Disarankeun Interface Circuit
Susunan pin
Gambar 3, Pin View
Méja5- Fungsi Pin
Watesan
| Pin | Lambang | Ngaran / Katerangan | Catetan |
| 1 | VEET | Modul pamancar Ground | 1 |
| 2 | TX_FAULT | Sesar pamancar modul | 2 |
| 3 | TX_DISABLE | Pamancar nonaktipkeun;Pareuman kaluaran laser pamancar | 3 |
| 4 | SDA | 2-Kawat Serial Interface Data Line (MOD-DEF2) | |
| 5 | SCL | 2-Kawat Serial Interface Jam (MOD-DEF1) | |
| 6 | MOD_ABS | Modul Absen, disambungkeun ka VEET atanapi VEER dina modul | 2 |
| 7 | RS0 | Laju Pilih 0, optionally ngadalikeun SFP + panarima modul | 4 |
| 8 | RX_LOS | Kaleungitan Receiver Indikasi Sinyal (Dina FC ditunjuk salaku Rx_LOS sareng di Ethernet ditunjuk salaku NOT Signal Detect) | 2 |
| 9 | RS1 | Laju Pilih 1, optionally ngadalikeun SFP + modul pamancar | 4 |
| 10 | VEER | Modul panarima Ground | 1 |
| 11 | VEER | Modul panarima Ground | 1 |
| 12 | RD- | Receiver Inverted Data Kaluaran | |
| 13 | RD+ | Receiver Non-Inverted Data Kaluaran | |
| 14 | VEER | Modul panarima Ground | 1 |
| 15 | VCCR | modul panarima 3.3 V suplai | |
| 16 | VCCT | pamancar modul 3.3 V suplai | |
| 17 | VEET | Modul pamancar Ground | 1 |
| 18 | TD+ | Pamancar Input Data Non-Inverted | |
| 19 | TD- | Pamancar Inverted Data Input | |
| 20 | VEET | Modul pamancar Ground | 1 |
Catetan:
- Pin taneuh modul diisolasi tina modul kasus.
- The pin wajib be ditarik up kalawan 4.7K-10Kohms to a Voltaseu antawis 3.14V jeung 3.46V on host papan.
- Pin ieu ditarik nepi ka VCCT kalawan résistor 4.7K-10KΩ dina modul.
- Tempo SFF-8472 Rev12.2 tabél 10-2.
Spésifikasi ngawaskeun
Gambar 4, Peta Mémori
Diagram Desain Mékanis
Méja5- Kabel
Panjangna
| Panjang kabelL(Unit: m） | Sabar(Unit: cm） |
| ≤1.0 | +5/-0 |
| 1.0<L≤4.5 | +15/-0 |
| 4.5<L≤14.5 | +30/-0 |
| > 14.5 | +2%/-0 |
Perhatosan
Pancegahan Penanganan: Alat ieu rentan ka ruksakna akibat tina muatan éléktrostatik (ESD).
Lingkungan bébas statik disarankeun pisan.Turutan tungtunan nurutkeun prosedur ESD ditangtoskeun.
Kasalametan Laser: Radiasi anu dipancarkeun ku alat laser tiasa bahaya pikeun panon manusa.Hindarkeun paparan panon ka radiasi langsung atanapi henteu langsung.
