Alpha Bridge ASF28-T-02-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-02-PEL 2 30 3.3V 0°C to 70 °C
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