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Product Overview
The LMKDB1204REXT is a high-performance 1:4 fanout clock buffer from Texas Instruments, designed for low-jitter clock distribution in demanding applications. It operates from a 2.5V or 3.3V supply and features four differential outputs with programmable output voltage swing. The device is housed in a compact 28-pin VQFN (4x4 mm) package, making it ideal for space-constrained designs.
Detailed Technical Specifications
| Parameter |
Value |
| Supply Voltage |
2.5V ±5% or 3.3V ±10% |
| Input Frequency |
DC to 2.5 GHz |
| Output Type |
Differential (CML, LVPECL, LVDS) |
| Number of Outputs |
4 |
| Additive Jitter (RMS) |
50 fs (typical) at 156.25 MHz |
| Output Skew |
15 ps (maximum) |
| Operating Temperature |
-40°C to +85°C |
| Package |
28-VQFN (4x4 mm) |
Key Features
- 1:4 fanout with low additive jitter (50 fs RMS typical)
- Supports multiple output standards: CML, LVPECL, LVDS
- Programmable output voltage swing
- Wide input frequency range: DC to 2.5 GHz
- Low output skew: 15 ps max
- Single 2.5V or 3.3V supply operation
- Small 28-pin VQFN package (4x4 mm)
- Industrial temperature range: -40°C to +85°C
Target Applications
- 5G base station clock distribution (e.g., for RF transceivers like TI's AFE7444)
- Data center switches and routers (e.g., for distributing reference clocks to SerDes)
- Automotive ADAS systems (e.g., for synchronizing radar and camera modules)
- Test and measurement equipment (e.g., for low-jitter clock distribution in oscilloscopes)
- FPGA-based systems (e.g., for clocking Xilinx or Intel FPGAs)
Global Supply Chain & Wholesale Solutions
At Jasin Chip, we provide professional supply chain and wholesale solutions for
LMKDB1204REXT. Our core advantages include:
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24/7 Global Customer Support: Professional team providing instant
quotes and technical support worldwide.
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In-stock Inventory, Same-day Shipping: We maintain localized stock;
orders confirmed before 4 PM are shipped the same day.
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HK-SZ Synergy, Flexible Settlement: Direct global shipping from
Shenzhen with support for HK bank transfers and multi-currency.
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Escrow Secured Transactions: We support Escrow.com for secure
transactions, ensuring peace of mind for batch orders.
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BOM Kitting & Sampling Services: Specialized sourcing for
testing samples and urgent shortage components.
Quality Assurance & Compliance
Jasin Chip guarantees that all delivered products are 100% original factory stock
with full quality assurance and traceability.
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100% Original & Authentic: All components are guaranteed to
be authentic with strict quality control.
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RoHS Compliant: All electronic components comply with international
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
LMKDB1204REXT 是德州儀器(TI)推出的一款高性能 1:4 扇出時鐘緩衝器,專為要求低抖動時鐘分配的應用而設計。它可在 2.5V 或 3.3V 電源下工作,具有四個差分輸出,輸出電壓擺幅可編程。器件採用緊湊的 28 引腳 VQFN(4x4 mm)封裝,非常適合空間受限的設計。
詳細技術參數
| 參數 |
數值 |
| 電源電壓 |
2.5V ±5% 或 3.3V ±10% |
| 輸入頻率 |
DC 至 2.5 GHz |
| 輸出類型 |
差分(CML、LVPECL、LVDS) |
| 輸出數量 |
4 |
| 附加抖動(RMS) |
50 fs(典型值)@ 156.25 MHz |
| 輸出偏斜 |
15 ps(最大值) |
| 工作溫度 |
-40°C 至 +85°C |
| 封裝 |
28-VQFN(4x4 mm) |
核心特性
- 1:4 扇出,低附加抖動(典型 50 fs RMS)
- 支持多種輸出標準:CML、LVPECL、LVDS
- 可編程輸出電壓擺幅
- 寬輸入頻率範圍:DC 至 2.5 GHz
- 低輸出偏斜:最大 15 ps
- 單一 2.5V 或 3.3V 電源供電
- 小型 28 引腳 VQFN 封裝(4x4 mm)
- 工業溫度範圍:-40°C 至 +85°C
典型應用場景
- 5G 基站時鐘分配(例如,為 TI 的 AFE7444 等射頻收發器提供時鐘)
- 數據中心交換機和路由器(例如,為 SerDes 分配參考時鐘)
- 汽車 ADAS 系統(例如,同步雷達和攝像頭模塊)
- 測試與測量設備(例如,為示波器提供低抖動時鐘分配)
- 基於 FPGA 的系統(例如,為 Xilinx 或 Intel FPGA 提供時鐘)
環球供應鏈與批發合作夥伴方案
在 Jasin Chip,我們為 LMKDB1204REXT 提供全面的供應鏈與批發解決方案。
我們的核心優勢包括:
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全天候環球客戶支援:專業團隊為您提供即時報價及技術支援,無需漫長等待。
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