產品詳細資料

Function Clock network synchronizer Number of outputs 8 Output type CML, HCSL, LVCMOS, LVDS, LVPECL RMS jitter (fs) 150 Features I2C, Integrated EEPROM, Pin programmable, SPI Output frequency (min) (MHz) 0.000000000001 Output frequency (max) (MHz) 750 Input type LVCMOS, LVDS, LVPECL, XTAL Supply voltage (min) (V) 3.3 Supply voltage (max) (V) 3.6 Operating temperature range (°C) -40 to 85 Number of input channels 4
Function Clock network synchronizer Number of outputs 8 Output type CML, HCSL, LVCMOS, LVDS, LVPECL RMS jitter (fs) 150 Features I2C, Integrated EEPROM, Pin programmable, SPI Output frequency (min) (MHz) 0.000000000001 Output frequency (max) (MHz) 750 Input type LVCMOS, LVDS, LVPECL, XTAL Supply voltage (min) (V) 3.3 Supply voltage (max) (V) 3.6 Operating temperature range (°C) -40 to 85 Number of input channels 4
VQFN (RGC) 64 81 mm² 9 x 9
  • Two Independent PLL Channels Featuring:
    • Jitter: 150fs RMS for Outputs ≥ 100MHz
    • Phase Noise: –112dBc/Hz at 100Hz Offset for 122.88MHz
    • Hitless Switching: 50ps Phase Transient With Phase Cancellation
    • Programmable Loop Bandwidth With Fastlock
    • Standards-Compliant Synchronization and Holdover Using a Low-Cost TCXO/OCXO
    • Any Input to Any Output Frequency Translation
  • Four Reference Clock Inputs
    • Priority-Based Input Selection
    • Digital Holdover on Loss of Reference
  • Eight Clock Outputs With Programmable Drivers
    • Up to Six Different Output Frequencies
    • AC-LVDS, AC-CML, AC-LVPECL, HCSL, and 1.8V or 2.5V LVCMOS Output Formats
  • EEPROM/ROM for Custom Clocks on Power-Up
  • Flexible Configuration Options
    • Up to 750MHz on Input and Output
    • XO: 10MHz to 100MHz, TCXO: 10MHz to 54MHz
    • DCO Mode: < 1ppt/Step for Fine Frequency and Phase Steering (IEEE 1588 Slave)
    • Zero Delay for Deterministic Phase Offset
    • Robust Clock Monitoring and Status
    • I2C or SPI Interface
  • Excellent Power Supply Noise Rejection (PSNR)
  • 3.3V Supply With 1.8V, 2.5V, or 3.3V Outputs
  • Industrial Temperature Range: –40°C to +85°C
  • Two Independent PLL Channels Featuring:
    • Jitter: 150fs RMS for Outputs ≥ 100MHz
    • Phase Noise: –112dBc/Hz at 100Hz Offset for 122.88MHz
    • Hitless Switching: 50ps Phase Transient With Phase Cancellation
    • Programmable Loop Bandwidth With Fastlock
    • Standards-Compliant Synchronization and Holdover Using a Low-Cost TCXO/OCXO
    • Any Input to Any Output Frequency Translation
  • Four Reference Clock Inputs
    • Priority-Based Input Selection
    • Digital Holdover on Loss of Reference
  • Eight Clock Outputs With Programmable Drivers
    • Up to Six Different Output Frequencies
    • AC-LVDS, AC-CML, AC-LVPECL, HCSL, and 1.8V or 2.5V LVCMOS Output Formats
  • EEPROM/ROM for Custom Clocks on Power-Up
  • Flexible Configuration Options
    • Up to 750MHz on Input and Output
    • XO: 10MHz to 100MHz, TCXO: 10MHz to 54MHz
    • DCO Mode: < 1ppt/Step for Fine Frequency and Phase Steering (IEEE 1588 Slave)
    • Zero Delay for Deterministic Phase Offset
    • Robust Clock Monitoring and Status
    • I2C or SPI Interface
  • Excellent Power Supply Noise Rejection (PSNR)
  • 3.3V Supply With 1.8V, 2.5V, or 3.3V Outputs
  • Industrial Temperature Range: –40°C to +85°C

The LMK05028 is a high-performance network synchronizer clock device that provides jitter cleaning, clock generation, advanced clock monitoring, and good hitless switching performance to meet the stringent timing requirements of communications infrastructure and industrial applications. The low jitter and high PSNR of the device reduce bit error rates (BER) in high-speed serial links.

The device has two PLL channels and generates up to eight output clocks with 150-fs RMS jitter. Each PLL domain can select from any four reference inputs to synchronize the outputs.

The LMK05028 is a high-performance network synchronizer clock device that provides jitter cleaning, clock generation, advanced clock monitoring, and good hitless switching performance to meet the stringent timing requirements of communications infrastructure and industrial applications. The low jitter and high PSNR of the device reduce bit error rates (BER) in high-speed serial links.

The device has two PLL channels and generates up to eight output clocks with 150-fs RMS jitter. Each PLL domain can select from any four reference inputs to synchronize the outputs.

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重要文件 類型 標題 格式選項 日期
* Data sheet LMK05028 Low-Jitter Dual-Channel Network Synchronizer Clock With EEPROM datasheet (Rev. B) PDF | HTML 2025年 2月 14日
Third party document Intel® Stratix® 10 SX SoC Development Kit User Guide 2019年 4月 12日
Technical article How to achieve network synchronization clocks with TI digital PLLs PDF | HTML 2018年 6月 21日
Application note TI Network Synchronizer Clock Value Adds in Communications and Industrial Applic 2018年 4月 12日
Application note ITU-T G.8262 Compliance Test Results for the LMK05028 Digital PLL Network 2018年 4月 10日
User guide LMK05028 Registers 2018年 4月 10日

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LMK05028EVM — LMK05028 網路時鐘產生器和同步器評估模組

LMK05028EVM 是適用於 LMK05028 網路時鐘產生器和同步器的評估模組。EVM 可用於裝置評估、合規測試和系統原型設計。
LMK05028 整合了兩個數位 PLL (DPLL) 與可編程頻寬,可用於輸入漂移和抖動衰減。EVM 包括 SMA 連接器,用於時鐘輸入、振盪器輸入和時鐘輸出,以便與 50-Ω 測試設備介接。板載 XO 和 TCXO 選項可用來對 LMK05028 操作時的自由運轉、鎖定或維持模式進行評估。EVM 可透過板載 USB 微控制器 (MCU) 介面,使用配備 TI TICS Pro 軟體圖形使用者介面 (GUI) 的 PC 進行配置。TiCS Pro 可用於將 (...)

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TICSPRO-SW TICS Pro GUI and Live Programming Tool for Clocking Devices

Texas Instruments clocks and synthesizers (TICS) pro software is used to program the evaluation modules (EVMs) for product numbers with these prefixes: CDC, LMK and LMX. These products include phase-locked loops and voltage-controlled oscillators (PLL+VCO), synthesizers and clocking devices.

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LMK05028 IBIS Model

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PLLATINUMSIM-SW is a simulation tool that allows users to create detailed designs and simulations of our PLLatinum™ integrated circuits, which include the LMX series of phase-locked loops (PLLs) and synthesizers.

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