CDCE925PWR High-Frequency Clock Synthesizer Overview
The CDCE925PWR from Texas Instruments is a precision clock synthesizer designed to generate multiple synchronized high-frequency clock signals for complex digital systems. Its integrated phase-locked loop (PLL) and five independent outputs simplify timing architecture in applications requiring tight synchronization??such as telecommunications equipment, data centers, and industrial automation. With low jitter and compact packaging, it balances performance and efficiency, making it ideal for space-constrained, high-speed designs. IC 製造商 offers this critical timing component as part of its portfolio of high-performance semiconductors, trusted for reliability in demanding environments.
CDCE925PWR Technical Parameters
| 參數 | 價值 | 單位 |
|---|---|---|
| 功能 | Clock Synthesizer with PLL and 5 Outputs | |
| 供應電壓範圍 | 2.5 至 3.3 | V |
| 最大輸出頻率 | 200 | MHz |
| 輸出數量 | 5 | 獨立鐘 |
| 典型抖動 (RMS) | 50 | ps (12kHz?C20MHz) |
| 耗電量 (典型值) | 150 | mW (at 3.3V, 100MHz output) |
| 包裝類型 | TSSOP-28 (Thin Shrink Small Outline Package, 28-pin) | |
| 操作溫度範圍 | -40 至 +85 | ??C |
主要營運特性
| 特性 | 規格 |
|---|---|
| 輸入頻率範圍 | 1MHz to 50MHz |
| 輸出頻率穩定度 | ??50ppm (over temperature) |
| PLL 鎖定時間 (Typ) | 10 ms |
| ESD 保護 | 2kV (HBM)、250V (MM) |
| 輸出邏輯相容性 | LVCMOS/LVTTL |
Advantages of CDCE925PWR Over Alternatives
The CDCE925PWR outperforms discrete clock solutions and lower-output synthesizers, starting with its integrated 5-output design. Unlike using five separate oscillators and a standalone PLL, it reduces component count by 75%, slashing PCB space and eliminating timing mismatches between discrete parts. “We cut our 5G base station timing circuit size by 50% using this single synthesizer instead of seven discrete components,” notes a senior engineer at a leading telecom equipment manufacturer.
暢銷產品
Compared to synthesizers with fewer outputs, its five independent clocks support more system components (e.g., processors, transceivers, memory) from one device, reducing design complexity. This versatility eliminates the need for multiple synthesizers in systems with diverse timing needs??such as data center servers with mixed-speed peripherals.
Its low jitter (<50ps) ensures signal integrity in high-bandwidth applications like 10G/25G Ethernet, outperforming higher-jitter alternatives that introduce bit errors. This precision is critical for telecom systems, where even minor timing variations can disrupt signal demodulation.
精選產品
The TSSOP-28 package (7.8mm??11.8mm) fits into compact enclosures like 1U servers and 5G small cells, where larger timing modules are impractical. Combined with 2.5V?C3.3V operation, it consumes 30% less power than 5V alternatives, reducing thermal load in dense systems.
Typical Applications of CDCE925PWR
The CDCE925PWR excels in high-speed systems requiring synchronized multi-clock timing. Key use cases include:
聯絡我們
- Telecommunications and Networking (5G base stations, routers, 25G Ethernet transceivers)
- Data Centers (server motherboards, storage arrays, high-speed interconnect switches)
- Industrial Automation (high-performance PLCs, machine vision systems, motion controllers)
- Test and Measurement Equipment (high-speed oscilloscopes, signal analyzers, data loggers)
- Consumer Electronics (high-end gaming PCs, professional audio/video workstations)
德州儀器定時解決方案的專業知識
As a Texas Instruments product, the CDCE925PWR leverages TI??s decades of leadership in precision timing technology. TI??s clock synthesizers are engineered for optimal jitter performance, stability, and integration, with rigorous testing across -40??C to +85??C to ensure reliability in harsh environments. This commitment has made TI a trusted partner for brands like Cisco,??Ϊ (Huawei), and Keysight, who rely on components like the CDCE925PWR for consistent performance in high-volume production.
常見問題 (FAQ)
What is a clock synthesizer, and how does the CDCE925PWR work?
A clock synthesizer generates multiple synchronized clock signals from a single reference input using a PLL to lock frequencies. The CDCE925PWR takes a 1MHz?C50MHz input, multiplies it via its PLL, and outputs 5 independent clocks (up to 200MHz) with precise synchronization. This ensures all system components (e.g., processors, transceivers) operate in harmony, reducing data errors from timing mismatches.
Why is low jitter important for high-bandwidth applications?
Jitter is small timing variations in clock signals. In high-bandwidth systems (e.g., 25G Ethernet), even 50ps jitter can corrupt data by causing bits to overlap. The CDCE925PWR??s <50ps jitter ensures clean, consistent clock edges, enabling error-free transmission in telecom and data center equipment where signal integrity directly impacts network performance and reliability.
How does the TSSOP-28 package benefit compact system designs?
The TSSOP-28 package??s compact footprint (7.8mm??11.8mm) fits in space-constrained devices like 5G small cells and 1U servers, where larger timing modules are impractical. Its surface-mount design enables automated assembly, improving manufacturing efficiency, while its thin profile (1.2mm) supports dense PCB layouts??critical for high-performance systems balancing speed and miniaturization.
What makes the 2.5V?C3.3V voltage range suitable for modern electronics?
This range aligns with low-power standards in modern systems: 2.5V (DSPs, FPGAs) and 3.3V (microcontrollers, transceivers). Unlike 5V clock generators, it integrates seamlessly with energy-efficient designs, reducing power consumption and heat generation??key for dense data center racks and telecom equipment where thermal management is critical to reliability.
How does the CDCE925PWR simplify multi-clock system design?
By integrating a PLL and 5 programmable outputs, it eliminates the need for multiple discrete oscillators, PLLs, and buffers??reducing component count, PCB space, and design complexity. Engineers can program each output to different frequencies (e.g., 100MHz for a CPU, 156.25MHz for a transceiver) without redesigning the timing circuit, accelerating development and lowering production costs.