Alpha Bridge ASF28-T-05-PEL
Features
- Compliant with SFF-8402 and SFF-
- Up to 78125 Gbps data rate per channel
- Up to 5m transmission
- Single 3V power supply
- Lowest total system EMI solution
- Optimized design for signal integrity
- Operating temperature: -5~70℃
- RoHS compliant
Application
- 25G Ethernet
General Product Characteristics
| SFP28 Copper Specifications | |
| Number of Lanes | Tx & Rx |
| Channel Data Rate | 25.78125 Gbps/channel |
| Operating Case Temperature | -5 to +70°C |
| Storage Temperature | -40 to +85°C |
| Supply Voltage | 3.3V nominal |
| Electrical Interface | 20 pin edge connector |
| Management Interface | Management Interface |
High Speed Characteristics
| Parameter | Symbol | Min. | Max. | Units | Note |
| Differential Impedance | RIN,P-P | 90 | 110 | Ώ | |
| Insertion loss | SDD21 | 22.48 | dB | At 12.8906 GHz | |
| Differential Return Loss | SDD11 SDD22 | See 1 See 2 | dB dB | At 0.05 to 4.1 GHz At 4.1 to 19 GHz | |
| Common-mode to common- mode output return loss | SCC11 S2CC2 | 2 | dB | At 0.2 to 19 GHz | |
| Differential to common-mode return loss | SCD11 SCD22 | See 3 See 4 | At 0.01 to 12.89 GHz At 12.89 to 19 GHz | ||
| Differential to common Mode Conversion Loss | SCD21 | 10 | At 0.01 to 12.89 GHz | ||
| See 5 | dB | At 12.89 to 15.7 GHz | |||
| 6.3 | At 15.7 to 19 GHz | ||||
| Channel Operating Margin | COM | 3 | dB |
Pin Description
| Pin | Logic | Symbol | Description |
| 1 | VeeT | Module Transmitter Ground | |
| 2 | LVTTL-O | Tx_Fault | Module Transmitter Fault |
| 3 | LVTTL-I | Tx_Disable | Transmitter disable; Turns off transmitter laser output |
| 4 | LVTTL-I/O | SDA | 2-wire Serial Interface Data Line (Same as MOD-DEF2 in INF- 8074i) |
| 5 | LVTTL-I/O | SCL | 2-wire Serial Interface Clock (Same as MOD-DEF1 in INF-8074i) |
| 6 | Mod_ABS | Module Absent, connected to VeeT or VeeR in the module | |
| 7 | LVTTL-I | RS0 | Rate Select 0, optionally controls SFP28 module receiver |
| 8 | LVTTL-O | Rx_LOS | Receiver Loss of Signal Indication (In FC designated as Rx_LOS and in Ethernet designated as Signal Detect) |
| 9 | LVTTL-I | RS1 | Rate Select 1, optionally controls SFP28 module transmitter |
| 10 | VeeR | Module Receiver Ground | |
| 11 | VeeR | Module Receiver Ground | |
| 12 | CML-O | RD- | Receiver Inverted Data Output |
| 13 | CML-O | RD+ | Receiver Non-Inverted Data Output |
| 14 | VeeR | Module Receiver Ground | |
| 15 | VccR | Module Receiver 3.3 V Supply | |
| 16 | VccT | Module Transmitter 3.3 V Supply | |
| 17 | VeeT | Module Transmitter Ground | |
| 18 | CML-I | TD+ | Transmitter Non-Inverted Data Input |
| 19 | CML-I | TD- | Transmitter Inverted Data Input |
| 20 | VeeT | Module Transmitter Ground |
Ordering Information
| Part Number | Length (M) | AWG | Voltage | Temperature |
| ASF28-T-03-PEL | 3 | 26 | 3.3V | 0°C to 70 °C |

