Datasheet > HXT14450

HXT14450

更新时间： 2023-12-20 18:46:31

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
3页	291K
描述
56Gb/s PAM4 CDR/Retimer with VCSEL Drivers, Uni-Di

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HXT14450 数据手册

Short-Form Datasheet

HXT14450

56Gbps – Linear PAM4 VCSEL Driver with CDR

The HXT14450 is a quad-channel, low power, linear

vertical-cavity surface-emitting laser (VCSEL) driver

with an integrated clock and data recovery (CDR)

unit. The chip is designed for MMF PMD Short-

Reach applications that support 200G per port with

a signaling rate up to 56Gbps PAM4 modulation. In

conjunction with the HXR14450 – a quad-channel

transimpedance amplifier (TIA) receiver with an

integrated CDR, one can produce compact quad

small form factor QSFP-type modules to serve high

speed optical interconnects in data center

Features

 Quad 56Gb/s PAM4 VCSEL Driver integrated

with a low latency CDR

 Low power – typical 490 mW per channel

 Supports up to 11mA modulation current to

VCSEL

 Programmable 8-bit IMOD and IBIAS control

 Auto-Adaptive CTLE and DFE

 Support reference-less and reference clock

modes

applications.

 On-chip testability: eye opening monitor (EOM),

jitter tolerance (JTOL), PRBS generator, error

checker

The HXT14450 has a built-in auto-adaptive

continuous-time linear equalizer (CTLE) and a

decision-feedback equalizer (DFE), which can work

in chip-to-module and chip-to-chip interconnects.

The chipsets provide on-chip testability such as

PRBS generator and error checker.

 Integrated temperature sensor

 Input and output polarity inversion

 Programmable TX test pattern generation

 TX Disable, programmable loss of signal (LOS)

and output de-emphasis

Applications

 200G QSFP56 SR4 and 400G QSFP-DD or

OSFP SR8 Ethernet Modules and AOC

 I²C interface control: standard and fast modes

 400G OBO Modules

 Support CEI-56G-VSR-PAM4

Figure 1. Block Diagram

X0010044 Rev.1.0

Dec.7.20

Page 1

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