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Product Overview
The CDC421A250RGET from Texas Instruments is a high-performance clock generator designed to deliver a 250MHz LVPECL output with exceptional jitter performance. Housed in a compact 24-VQFN (4x4mm) package, this device is ideal for applications requiring precise clock synthesis and distribution. It features a fully integrated voltage-controlled oscillator (VCO) and phase-locked loop (PLL), eliminating the need for external components. The device operates from a single 3.3V supply and provides a differential LVPECL output with typical jitter of 0.2ps RMS (12kHz–20MHz).
Detailed Technical Specifications
| Parameter |
Value |
| Output Frequency |
250 MHz |
| Output Type |
LVPECL (differential) |
| Supply Voltage |
3.3V ± 5% |
| RMS Jitter (12kHz–20MHz) |
0.2 ps (typical) |
| Phase Noise at 10kHz offset |
-150 dBc/Hz (typical) |
| Operating Temperature |
-40°C to +85°C |
| Package |
24-VQFN (4x4mm) |
| Power Consumption |
180 mW (typical) |
Key Features
- Integrated VCO and PLL with low jitter
- Differential LVPECL output with 250MHz frequency
- Single 3.3V supply operation
- Excellent phase noise performance: -150 dBc/Hz at 10kHz offset
- Small footprint: 24-VQFN (4x4mm) package
- Industrial temperature range: -40°C to +85°C
- No external loop filter components required
Target Applications
- 5G base station clock generation (e.g., for RF transceivers)
- Automotive dashboard display timing (e.g., for high-speed serial links)
- Data center switches and routers (e.g., for 100GbE interfaces)
- Test and measurement equipment (e.g., for high-speed ADC clocking)
- FPGA reference clock (e.g., for Xilinx or Intel FPGAs)
Global Supply Chain & Wholesale Solutions
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CDC421A250RGET. Our core advantages include:
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testing samples and urgent shortage components.
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with full quality assurance and traceability.
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be authentic with strict quality control.
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environmental and safety standards.
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Original Factory Packaging: We maintain original factory packaging
and seals to ensure ESD protection and physical integrity.
產品概述
CDC421A250RGET 是德州儀器(TI)推出的一款高性能時鐘發生器,可提供 250MHz LVPECL 輸出,具有卓越的抖動性能。該器件採用緊湊的 24-VQFN(4x4mm)封裝,非常適合需要精確時鐘合成和分配的應用。它集成了完全集成的壓控振盪器(VCO)和鎖相環(PLL),無需外部組件。該器件由單一 3.3V 電源供電,提供差分 LVPECL 輸出,典型抖動為 0.2ps RMS(12kHz–20MHz)。
詳細技術參數
| 參數 |
數值 |
| 輸出頻率 |
250 MHz |
| 輸出類型 |
LVPECL(差分) |
| 供電電壓 |
3.3V ± 5% |
| RMS 抖動(12kHz–20MHz) |
0.2 ps(典型值) |
| 10kHz 偏移處的相位噪聲 |
-150 dBc/Hz(典型值) |
| 工作溫度 |
-40°C 至 +85°C |
| 封裝 |
24-VQFN(4x4mm) |
| 功耗 |
180 mW(典型值) |
核心特性
- 集成 VCO 和 PLL,低抖動
- 差分 LVPECL 輸出,頻率 250MHz
- 單一 3.3V 電源供電
- 卓越的相位噪聲性能:10kHz 偏移處 -150 dBc/Hz
- 小尺寸:24-VQFN(4x4mm)封裝
- 工業溫度範圍:-40°C 至 +85°C
- 無需外部環路濾波器組件
典型應用場景
- 5G 基站時鐘生成(例如用於射頻收發器)
- 汽車儀表板顯示時序(例如用於高速串行鏈路)
- 數據中心交換機和路由器(例如用於 100GbE 接口)
- 測試和測量設備(例如用於高速 ADC 時鐘)
- FPGA 參考時鐘(例如用於 Xilinx 或 Intel FPGA)
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