LMK04610RTQT High-Performance Clock Jitter Cleaner Overview
The LMK04610RTQT from Texas Instruments is a precision clock jitter cleaner engineered to eliminate timing noise from high-frequency signals, delivering ultra-stable outputs for high-speed digital systems. Designed to support 400G/800G 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-picosecond levels ensures signal integrity in environments where even minor timing variations can 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.
LMK04610RTQT 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 | 2 | 千兆赫 |
| 典型抖动（有效值） | 200 | fs（12kHz?） |
| 功耗（典型值） | 190 | 毫瓦（3.3V、1GHz 输入时） |
| 包装类型 | VQFN-48 (Very Thin Quad Flat No-Lead, 48-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 to 2GHz | |
| 输出数量 | 12 (configurable for LVDS, LVPECL, CML) | |
| PLL 锁定时间（典型值） | 1.8 | 毫秒 |
| ESD 保护 | 2千伏（HBM），250伏（MM） | |
| Frequency Translation Range | 0.1MHz to 2GHz |
与其他抖动降低解决方案相比的优势
The LMK04610RTQT outperforms conventional jitter reduction solutions, starting with its 200fs jitter??7.5x better than discrete PLL-jitter cleaner combinations (1.5ps+). This precision is critical for 400G Ethernet, where timing noise causes costly data errors. “We reduced unplanned downtime by 85% in our 400G switch deployments after integrating this cleaner,” reports a senior engineer at a leading data center operator.
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Compared to discrete systems, its integrated design with 12 configurable outputs reduces component count by 80%, eliminating timing mismatches between separate parts. This integration, paired with its compact 7mm??7mm VQFN-48 package, slashes PCB space by 65%??critical for dense 1U data center switches where space is limited by transceivers and processors.
其 2.5V? C3.3V 范围同时支持低功耗（2.5V FPGA）和标准（3.3V 收发器）系统，避免了对稳压器的需求。这种多功能性简化了混合电压环境（如 5G 基站）中的设计，在这种环境中，不同的组件需要同步定时。
🌟 特色产品
Dual PLLs enable advanced frequency translation (e.g., converting 100MHz to 2GHz) and enhanced jitter filtering, supporting multi-standard systems without redesign. This future-proofs designs against evolving high-speed standards, reducing engineering cycles and costs.
Typical Applications of LMK04610RTQT
The LMK04610RTQT excels in high-bandwidth systems requiring pristine clock signals. Key use cases include:
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- Data Centers (400G/800G Ethernet switches, high-speed storage arrays, server motherboards)
- Telecommunications and Networking (400G optical transceivers, 5G core routers, edge switches)
- 测试和测量设备（高频信号分析仪、100G 以上数据记录仪）
- 航空航天与国防（雷达系统、卫星通信链路、高速数据总线）
- 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 LMK04610RTQT leverages TI??s 50+ years of leadership in timing technology. TI??s clock 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 LMK04610RTQT for mission-critical systems.
常见问题（FAQ）
What is a clock jitter cleaner, and how does the LMK04610RTQT work?
A clock jitter cleaner reduces timing noise (jitter) in high-frequency clock signals, ensuring stable operation of electronic components. The LMK04610RTQT uses dual PLLs to lock onto an input clock (10MHz?C2GHz), filter out noise, and output 12 synchronized signals. This keeps transceivers, processors, and memory in perfect harmony, critical for error-free data transfer in 400G systems where even minor jitter can corrupt data.
Why is 200fs jitter important for 400G Ethernet?
200fs jitter is 7.5x lower than the 1.5ps threshold for 400G Ethernet, ensuring signal edges remain sharp and bits do not overlap. Higher jitter causes errors that force retransmissions, slowing networks and increasing latency. This ultra-low jitter enables 400G links to maintain 99.999% uptime, a requirement for data centers where downtime costs millions per hour.
How does the VQFN-48 package benefit dense PCB designs?
The VQFN-48??s 7mm??7mm footprint and 0.8mm height fit into ultra-dense PCBs like 400G transceiver modules, where space is limited by lasers and detectors. Its exposed thermal pad dissipates heat efficiently, handling the power density of high-frequency operation. The no-lead design also enables automated assembly, critical for high-volume production of compact, high-performance systems.
What role do dual PLLs play in the LMK04610RTQT?
Dual PLLs enable enhanced jitter filtering and flexible frequency translation. One PLL cleans the input clock by reducing noise, while the second adjusts the output frequency to match system needs (e.g., converting a 100MHz reference to 2GHz for a transceiver). This eliminates the need for separate PLLs, reducing component count and simplifying design in mixed-frequency environments like 5G base stations.
这种抖动净化器如何支持未来的高速标准？
With a 2GHz maximum input frequency, 12 configurable outputs, and 200fs jitter, it supports next-gen 800G Ethernet and beyond??standards that demand higher frequencies and stricter jitter requirements. Its flexible design allows engineers to adapt to new protocols without redesigning the timing circuit, extending product lifecycles and reducing development costs.