Semtech GX4002

The GX4002 is a low-power, high-speed 2 x 2 crosspoint switch, with robust signal conditioning circuits for driving and receiving high-speed signals through backplanes. The device consumes as low as 600mW of power (typical) with all channels operational. Unused portions of the chip can be turned off in order to further reduce power consumption.
The signal conditioning features of the GX4002 include per-input clock and data recovery (CDR), programmable equalization and per-output programmable de-emphasis. The input equalizer removes ISI jitter—typically caused by PCB trace losses—by opening the input data eye in applications where long PCB traces are used. The integrated CDR "resets" the jitter budget, effectively erasing the signal distortion that can occur during transmission.
Output pre-emphasis capability provides a boost of the high-frequency content of the output signal, such that the data eye remains open after passing through a long interconnect of PCB traces and connectors.
The GX4002 features an integrated analog-to-digital converter, which, through the serial interface, provides digital diagnostic information about supply voltage and die temperature.
The GX4002 device is packaged in a small-outline 5mm × 5mm 32-pin, high-frequency QFN package with exposed pad.
The GX4002 is Pb-free, and the encapsulation compound does not contain halogenated flame retardant. This component and all homogeneous sub components are RoHS-compliant.
Overview
Features
- 2 x 2 交叉点开关结构
- 集成 CDR,可在 9.95 至 11.3 Gbps 和 14.025 Gbps 速率下无参考时钟工作
- 自动速率检测
- 精细的动态芯片级电源管理控制
- 多个用户可编程的断电式省电模式
- 独立可编程输入迹线均衡,以减少确定性抖动 (ISI)
- 独立的可编程输出预加重,可驱动较长的电路板迹线
- 通过 I2C 接口实现数字控制
- 集成模数转换器,支持对电源电压和模具温度等数字诊断信息的访问
- 集成眼图监视器和 PRBS7 发生器/检验器
- 提供极性反转和输出静音功能
- 3.3 V 单电源 (±5%)
- 片上 I/O 终端
- 低功耗:600 mW(典型值)
- 以 4.25 Gbps 和 8.5 Gbps 速率运行时功耗低:360mW(典型值)
- 5 mm x 5 mm 32 引脚 QFN 封装
- 外壳工作温度:-40 C 至 +100 C
- 符合 RoHS 标准
Applications
- 企业和运营商应用
- 10 GbE,光纤通道和 InfiniBand 网络
- 冗余切换
- 适用于 10 Gbps 和 14 Gbps 背板和线卡的重定时器
Packaging
- GX4002-INE3:无铅,符合 RoHS 标准,490 颗/盘
Order Codes
- 企业和运营商应用
- 10 GbE,光纤通道和 InfiniBand 网络
- 冗余切换
- 适用于 10 Gbps 和 14 Gbps 背板和线卡的重定时器