25G SFP28 Loopback Module

SFP28 25G, 1-channel parallel passive loopback module is for storages, servers, and switches SFP28 port testing. The electrical loopback provides a cost effective method for SFP28 port testing. Transmitting data from the host is electrically routed internally to the loopback module. The aggregate data rate of 10/25Gbps transmission can be achieved by this product.

Introduction

• Standard 3.3V voltage supply

• Standard SFP28 form factor, traffic bandwidth supports 25G with one lane, NRZ modulation

• Programmable power class

• Low skew insertion loss control among high-speed traces

• High loss to simulate long DAC (max=8.7dB)

• Supports OCP (over-current protection) and OTP (over-temperature protection)

• Supports temperature cut-off (97℃)

• Supports DDM (Digital Diagnostic Monitor) for monitoring current, voltage, and temperature

Features

• Standard I²C slave interface with 100KHz communication

• MSA standard compatible

• Programmable loading from 0.25W-10W

• Precise loading steps, 0.25W/step

• Default 1.5W to meet MSA low power mode

• Quick booting, 1sec ready for system control

• Status LED indicators

• OCP, OTP warning alarms

• Current, Voltage, Temperature monitoring

• Provides user mode EEPROM memory (240 bytes)

Compliance Standards

• SFF 8024 R4.9

• SFF 8472 R12.4

• SFF 8419 R1.3

• SFF 8432 R5.2a

• I²C standard v6.0