1 Features

• Quad-channel multi-protocol linear equalizer

supporting up to 28-GBd (PAM4) and 32-GBd

(NRZ) interfaces

• Suitable for up to CEI-56G, Ethernet (400 GbE),

Fibre Channel (64GFC), InfiniBand™ (HDR), and

CPRI/eCPRI PCB and copper cable applications

• Selectable CTLE boost profiles to compensate

either PCB or cable loss

• Integrated 2×2 crosspoint with pin or register

control for mux, fanout, and signal crossing

• Low power consumption: 160 mW / channel

(typical)

• No heat sink required

• Linear equalization with CTLE for seamless

support of CR/KR link training, auto-negotiation,

and FEC pass-through

• Extends long-reach links by 18-dB+ beyond

normal ASIC-to-ASIC capability at 13.28 GHz

• Eye expander for PAM-4 eye symmetry

enhancement

• Low input-to-output latency: 80 ps (typical)

• Low additive random jitter

• Small 6.00 mm × 6.00 mm BGA package for easy

flow-through routing

• No reference clock required

• Single 2.5-V ± 5 power supply

• –40°C to +85°C ambient temperature range

2 Applications

• Backplane (KR) and midplane C2C attachment

unit interface (AUI) reach extension

• Active copper cables (ACC) (SFP56, QSFP56,

QSFP-DD, or OSFP)

• Mux and de-mux for failover redundancy

3 Description

The DS560MB410 is a low-power, high-performance

four-channel linear equalizer supporting multi-rate,

multi-protocol interfaces up to 28 GBd using fourlevel

pulse amplitude modulation (PAM4), or up to

32 GBd using non-return-to-zero (NRZ) modulation.

It is used to extend the reach and robustness of highspeed

serial links for backplane, midplane, and active

copper cable (ACC) applications. The DS560MB410

can increase the reach between two ASICs by 18+ dB

beyond the normal ASIC-to-ASIC reach.

Each channel operates independently with a userselectable

CTLE boost profile optimized for equalizing

either PCB or copper cable loss profiles. The linear

nature of the DS560MB410’s equalization preserves

input signal characteristics traveling through the

redriver. This transparency allows link partner ASICs

to negotiate Tx equalizer coefficients freely during link

training and to support individual lane Forward Error

Correction (FEC) pass-through in mission mode with

minimal effect on latency.