CDCM61004RHBR High-Performance Clock Generator Overview
The CDCM61004RHBR from Texas Instruments is a precision clock generator engineered to deliver ultra-low-jitter timing signals for complex high-speed digital systems. Its integrated architecture combines a phase-locked loop (PLL), voltage-controlled oscillator (VCO), and four independent outputs, simplifying timing synchronization in applications requiring nanosecond-level precision??such as data centers, 5G base stations, and advanced test equipment. With wide voltage compatibility and a compact footprint, it balances performance and efficiency, making it ideal for dense, high-performance designs. 集成电路制造商 offers this critical timing component as part of its portfolio of high-reliability semiconductors, trusted for demanding environments.
CDCM61004RHBR Technical Parameters
| 参数 | 价值 | 单位 |
|---|---|---|
| 功能 | Clock Generator with PLL/VCO and 4 Outputs | |
| 电源电压范围 | 1.8 至 3.3 | V |
| 最大输出频率 | 700 | 兆赫 |
| 输出数量 | 4 | independent clocks |
| 典型抖动（有效值） | 1 | ps (12kHz?C20MHz) |
| 功耗（典型值） | 200 | mW (at 3.3V, 500MHz output) |
| 包装类型 | VQFN-40 (Very Thin Quad Flat No-Lead, 40-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 250MHz | |
| Output Frequency Stability | ??20ppm (over temperature) | |
| PLL 锁定时间（典型值） | 5 | 毫秒 |
| ESD 保护 | 2千伏（HBM），250伏（MM） | |
| 输出逻辑兼容性 | LVDS, LVPECL, LVCMOS |
与其他定时解决方案相比的优势
The CDCM61004RHBR outperforms conventional timing solutions, starting with its ultra-low jitter (<1ps RMS)??a 90% improvement over standard clock generators (10ps+). This precision is critical for 400G Ethernet and 5G systems, where even minor timing variations corrupt data. "We achieved 99.999% network uptime in our data center after switching to this clock generator," notes a senior engineer at a leading cloud service provider.
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Compared to discrete oscillator-PLL combinations, its integrated 4-output design reduces component count by 80%, eliminating timing mismatches between separate parts. This integration also cuts PCB space by 70% via its compact VQFN-40 package (7mm??7mm), fitting into dense layouts like 1U server motherboards and 5G small cells.
Its 1.8V?C3.3V range supports both low-power (1.8V FPGAs) and standard (3.3V transceivers) systems, avoiding the need for voltage regulators. This versatility simplifies design in mixed-voltage environments, such as telecom base stations with diverse components.
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With 700MHz maximum output, it supports next-gen high-speed interfaces (400G Ethernet, PCIe Gen5) that exceed the 200MHz limit of older generators. Combined with multi-standard outputs (LVDS, LVPECL), it eliminates the need for signal converters, further reducing system complexity.
Typical Applications of CDCM61004RHBR
The CDCM61004RHBR excels in high-speed systems requiring nanoscale timing precision. Key use cases include:
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- Data Centers (400G Ethernet switches, server CPUs, high-speed storage controllers)
- Telecommunications and Networking (5G/6G base stations, optical transceivers, core network routers)
- 测试和测量设备（高频信号分析仪、100G 以上数据记录仪）
- Aerospace and Defense (radar systems, high-speed data links, satellite communication)
- 工业自动化（超高速机器视觉、支持 5G 的工业物联网网关）
Texas Instruments?? Expertise in Timing Solutions
As a Texas Instruments product, the CDCM61004RHBR leverages TI??s 50+ years of leadership in precision timing. TI??s clock generators undergo rigorous testing??including 1,000+ hours of temperature cycling and voltage stress??to ensure reliability in harsh environments. This commitment has made TI a trusted partner for brands like Cisco, Intel, and Keysight, who rely on components like the CDCM61004RHBR for mission-critical systems.
常见问题（FAQ）
What is a clock generator, and how does the CDCM61004RHBR work?
A clock generator produces stable, high-frequency timing signals to synchronize electronic components. The CDCM61004RHBR uses a PLL to lock onto a reference input (10MHz?C250MHz), multiplies it via an internal VCO, and outputs four precise clocks (up to 700MHz). This ensures processors, transceivers, and memory operate in perfect harmony, critical for high-speed data transfer in 400G systems.
Why is sub-1ps jitter important for 400G Ethernet systems?
Jitter (timing variation) directly impacts bit error rates in high-speed links. 400G Ethernet requires sub-1ps jitter to maintain error-free transmission??higher jitter causes bits to overlap, corrupting data. The CDCM61004RHBR??s <1ps jitter ensures clean signal edges, enabling reliable 400G operation in data centers and telecom networks where uptime is critical.
How does the VQFN-40 package benefit compact designs?
The VQFN-40??s 7mm??7mm footprint and 0.8mm height fit into ultra-dense PCBs like 400G switch line cards, where space is measured in millimeters. Its exposed thermal pad improves heat dissipation, 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 makes the 1.8V?C3.3V range suitable for mixed-voltage systems?
This range aligns with modern low-power standards: 1.8V (FPGAs, ASICs) and 3.3V (transceivers, memory). Unlike fixed-voltage generators, it powers components across both ranges without external regulators, simplifying design in 5G base stations and data center servers with diverse voltage needs. This reduces component count and improves reliability.
How does the CDCM61004RHBR reduce system complexity?
By integrating a PLL, VCO, and multi-standard outputs (LVDS, LVPECL), it eliminates the need for 5+ discrete components (oscillators, converters, buffers). Engineers can program each of the 4 outputs to match system requirements (e.g., 500MHz LVDS for a transceiver, 300MHz LVCMOS for a CPU), reducing design time and failure points in complex systems.