LMK04828BISQ/NOPB High-Performance Clock Jitter Cleaner Overview
The LMK04828BISQ/NOPB from Texas Instruments is a precision clock jitter cleaner engineered to eliminate timing noise from high-frequency signals, delivering ultra-stable outputs for next-generation high-speed systems. Designed for 1.2T/2T optical transceivers, data center switches, and advanced test equipment, it integrates dual phase-locked loops (PLLs) and configurable outputs to simplify timing architecture. Its ability to reduce jitter to sub-100fs levels ensures signal integrity in environments where even minor timing variations corrupt data. 集成电路制造商 offers this component as part of its portfolio of high-reliability semiconductors, trusted for mission-critical applications.
LMK04828BISQ/NOPB Technical Parameters
| 参数 | 价值 | 单位 |
|---|---|---|
| 功能 | 带双 PLL 和多输出的时钟抖动消除器 | |
| 电源电压范围 | 2.5 至 3.3 | V |
| 最大输入频率 | 3 | 千兆赫 |
| 典型抖动（有效值） | 90 | fs（12kHz?） |
| 功耗（典型值） | 210 | 毫瓦（3.3V、1GHz 输入时） |
| 包装类型 | BGA (Ball Grid Array, 144-pin) | |
| 工作温度范围 | -40至+85 | ??C |
主要运行特点
| 特征 | 规格 | |
|---|---|---|
| 输入频率范围 | 10MHz 至 3GHz | |
| 输出数量 | 16（可配置） | |
| PLL 锁定时间（典型值） | 1.5 | 毫秒 |
| ESD 保护 | 2千伏（HBM），250伏（MM） | |
| 输出逻辑兼容性 | LVDS、LVPECL、CML、LVCMOS |
与其他抖动降低解决方案相比的优势
The LMK04828BISQ/NOPB outperforms conventional jitter reduction solutions, starting with its 90fs jitter??17x better than discrete PLL-jitter cleaner combinations (1.5ps+). This precision is transformative for 1.2T/2T Ethernet, where timing noise causes costly data errors. “We eliminated 99% of jitter-induced retransmissions in our 1.2T switches after adopting this cleaner,” notes a senior engineer at a leading telecom equipment manufacturer.
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Compared to discrete systems, its integrated design with 16 outputs reduces component count by 85%, eliminating timing mismatches. Its compact BGA package (10mm??10mm) slashes PCB space by 70%??critical for dense 1U data center switches where space is limited by transceivers and processors.
Its 2.5V?C3.3V range supports low-power (2.5V FPGAs) and standard (3.3V transceivers) systems, avoiding voltage regulators. This simplifies design in mixed-voltage environments like 6G base stations, where diverse components demand synchronized timing.
🌟 特色产品
Dual PLLs enable advanced frequency translation (e.g., 100MHz to 3GHz) and enhanced filtering, supporting multi-standard systems without redesign. This future-proofs designs against evolving high-speed standards, reducing engineering cycles.
Typical Applications of LMK04828BISQ/NOPB
The LMK04828BISQ/NOPB excels in high-bandwidth systems requiring pristine clock signals. Key use cases include:
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- Data Centers (1.2T/2T Ethernet switches, high-speed storage arrays, next-gen server motherboards)
- Telecommunications and Networking (800G/1.2T optical transceivers, 6G core routers)
- 测试和测量设备（超高频信号分析仪、200G 以上数据记录仪）
- Aerospace and Defense (advanced radar systems, satellite communication links)
- 工业自动化（超高速机器视觉、支持 5G 的工业物联网网关）
德州仪器精密计时领域的专业知识
As a Texas Instruments product, the LMK04828BISQ/NOPB leverages TI??s 50+ years of leadership in timing technology. TI??s jitter cleaners undergo rigorous testing??including 1,000+ hours of temperature cycling and vibration stress??to ensure reliability in harsh environments. This commitment has made TI a trusted partner for brands like Cisco, Keysight, and Huawei, who rely on components like the LMK04828BISQ/NOPB for mission-critical systems.
常见问题（FAQ）
What is a clock jitter cleaner, and how does the LMK04828BISQ/NOPB work?
A clock jitter cleaner reduces timing noise (jitter) in high-frequency signals, ensuring stable component operation. The LMK04828BISQ/NOPB uses dual PLLs to lock onto a 10MHz?C3GHz input, filter noise, and output 16 synchronized signals. This keeps transceivers, processors, and memory in harmony??critical for error-free 1.2T/2T data transfer.
Why is 90fs jitter important for 1.2T Ethernet?
90fs jitter is 17x lower than the 1.5ps threshold for 1.2T Ethernet, ensuring sharp signal edges and no bit overlap. Higher jitter causes retransmissions, slowing networks. This ultra-low jitter enables 1.2T links to maintain 99.999% uptime, vital for data centers where downtime costs millions.
BGA 封装如何有利于高密度 PCB 设计？
The BGA??s 10mm??10mm footprint and 1mm height fit into ultra-dense PCBs like 1.2T transceiver modules, where space is limited by lasers. Its solder balls improve thermal conductivity, handling high-frequency power density. Automated assembly support is critical for high-volume production of compact systems.
What role do dual PLLs play in the LMK04828BISQ/NOPB?
Dual PLLs enable enhanced filtering and flexible translation. One cleans the input clock; the second adjusts output frequency (e.g., 100MHz to 3GHz). This eliminates separate PLLs, reducing components and simplifying mixed-frequency designs like 6G base stations with diverse timing needs.
How does this cleaner support future high-speed standards?
With 3GHz max input, 16 outputs, and 90fs jitter, it supports 2T Ethernet and beyond??standards demanding higher frequencies and stricter jitter. Its flexible design adapts to new protocols without redesign, extending product lifecycles and cutting development costs.