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RF PLL 與合成器

LMX2595

現行

具有相位同步功能且支援 JESD204B 的 20-GHz 寬頻射頻合成器

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產品規格表

LMX2595

現行
產品規格表 立即訂購

產品詳細資料

Frequency (max) (MHz) 19000 Frequency (min) (MHz) 100 Normalized PLL phase noise (dBc/Hz) -236 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -129 Features Flexible ramp generation, Integer-boundary spurs (IBS) removal, Integrated VCO, JESD204B SYSREF, Multi-device sync, Phase adjustment, Wideband Current consumption (mA) 340 Integrated VCO Yes Operating temperature range (°C) -40 to 85 Rating Catalog Lock time (µs) (typ) (s) Loop BW dependent
Frequency (max) (MHz) 19000 Frequency (min) (MHz) 100 Normalized PLL phase noise (dBc/Hz) -236 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -129 Features Flexible ramp generation, Integer-boundary spurs (IBS) removal, Integrated VCO, JESD204B SYSREF, Multi-device sync, Phase adjustment, Wideband Current consumption (mA) 340 Integrated VCO Yes Operating temperature range (°C) -40 to 85 Rating Catalog Lock time (µs) (typ) (s) Loop BW dependent
VQFN (RHA) 40 36 mm² 6 x 6
  • 10-MHz to 20-GHz output frequency
  • –110 dBc/Hz phase noise at 100-kHz offset with 15-GHz carrier
  • 45-fs rms jitter at 7.5 GHz (100 Hz to 100 MHz)
  • Programmable output power
  • PLL key specifications
    • Figure of merit: –236 dBc/Hz
    • Normalized 1/f noise: –129 dBc/Hz
    • High phase detector frequency
      • 400-MHz integer mode
      • 300-MHz fractional mode
    • 32-bit fractional-N divider
  • Remove integer boundary spurs with programmable input multiplier
  • Synchronization of output phase across multiple devices
  • Support for SYSREF with 9-ps resolution programmable delay
  • Frequency ramp and chirp generation ability for FMCW applications
  • < 20-µs VCO calibration speed
  • 3.3-V single power supply operation
  • 10-MHz to 20-GHz output frequency
  • –110 dBc/Hz phase noise at 100-kHz offset with 15-GHz carrier
  • 45-fs rms jitter at 7.5 GHz (100 Hz to 100 MHz)
  • Programmable output power
  • PLL key specifications
    • Figure of merit: –236 dBc/Hz
    • Normalized 1/f noise: –129 dBc/Hz
    • High phase detector frequency
      • 400-MHz integer mode
      • 300-MHz fractional mode
    • 32-bit fractional-N divider
  • Remove integer boundary spurs with programmable input multiplier
  • Synchronization of output phase across multiple devices
  • Support for SYSREF with 9-ps resolution programmable delay
  • Frequency ramp and chirp generation ability for FMCW applications
  • < 20-µs VCO calibration speed
  • 3.3-V single power supply operation

The LMX2595 high-performance, wideband synthesizer that can generate any frequency from 10 MHz to 20 GHz. An integrated doubler is used for frequencies above 15 GHz. The high-performance PLL with figure of merit of –236 dBc/Hz and high-phase detector frequency can attain very low in-band noise and integrated jitter. The high-speed N-divider has no pre-divider, thus significantly reducing the amplitude and number of spurs. There is also a programmable input multiplier to mitigate integer boundary spurs.

The LMX2595 allows users to synchronize the output of multiple devices and also enables applications that need deterministic delay between input and output. A frequency ramp generator can synthesize up to two segments of ramp in an automatic ramp generation option or a manual option for maximum flexibility. The fast calibration algorithm allows changing frequencies faster than 20 µs. The LMX2595 adds support for generating or repeating SYSREF (compliant to JESD204B standard) designed for low-noise clock sources in high-speed data converters. A fine delay adjustment (9-ps resolution) is provided in this configuration to account for delay differences of board traces.

The output drivers within LMX2595 deliver output power as high as 7 dBm at 15-GHz carrier frequency. The device runs from a single 3.3-V supply and has integrated LDOs that eliminate the need for on-board low noise LDOs.

The LMX2595 high-performance, wideband synthesizer that can generate any frequency from 10 MHz to 20 GHz. An integrated doubler is used for frequencies above 15 GHz. The high-performance PLL with figure of merit of –236 dBc/Hz and high-phase detector frequency can attain very low in-band noise and integrated jitter. The high-speed N-divider has no pre-divider, thus significantly reducing the amplitude and number of spurs. There is also a programmable input multiplier to mitigate integer boundary spurs.

The LMX2595 allows users to synchronize the output of multiple devices and also enables applications that need deterministic delay between input and output. A frequency ramp generator can synthesize up to two segments of ramp in an automatic ramp generation option or a manual option for maximum flexibility. The fast calibration algorithm allows changing frequencies faster than 20 µs. The LMX2595 adds support for generating or repeating SYSREF (compliant to JESD204B standard) designed for low-noise clock sources in high-speed data converters. A fine delay adjustment (9-ps resolution) is provided in this configuration to account for delay differences of board traces.

The output drivers within LMX2595 deliver output power as high as 7 dBm at 15-GHz carrier frequency. The device runs from a single 3.3-V supply and has integrated LDOs that eliminate the need for on-board low noise LDOs.

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重要文件 類型 標題 格式選項 日期
* Data sheet LMX2595 20-GHz Wideband PLLATINUM™ RF Synthesizer With Phase Synchronization and JESD204B Support datasheet (Rev. C) PDF | HTML 2019年 4月 16日
Application note Practical Clocking Considerations That Give Your Next High-Speed Converter Design an Edge (Rev. A) PDF | HTML 2025年 4月 11日
Application brief Compilation of RF Synthesizer Resources PDF | HTML 2024年 10月 22日
Application note Sine to Square Wave Conversion Using Clock Buffers PDF | HTML 2024年 9月 3日
Circuit design MASH_SEED Optimization and Impact on Spurs (LMX2820) PDF | HTML 2024年 8月 8日
Application note Streamline RF Synthesizer VCO Calibration and Optimize PLL Lock Time (Rev. A) 2021年 8月 27日

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開發板

LMX2595EVM — 具有相位同步功能且符合 JESD204B 標準的 20 GHz 寬頻射頻合成器評估模組

此評估模組適用於 LMX2595，此模組是業界首款採用整合 VCO 的 PLL，可獲得高達 15GHz 的基本 VCO 輸出，使用倍頻器後可高達 20GHz。領先業界的 PLL FOM 為 -236dBc/Hz 和 1/f 的 -129dBc/Hz。此裝置支援 JESD204B 標準（可產生或重複 SYSREF 訊號），因此最適合時鐘高速資料轉換器。EVM 測量的整合式抖動在 9GHz 載波頻率下低於 50fs。透過提供 SYNC 訊號，使用者可在多個 LMX2595 裝置中同步輸出相位。LMX2595 可產生頻率斜坡，可在此評估模組中示範。有了板載振盪器，設定程序僅需使用 3.3V (...)
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開發板

XMICR-3P-LMX2595 — LMX2595 X-MWblock 評估模組

X-MWblocks consist of RF and Microwave “Drop-In” components that can be used individually for prototyping or in production assemblies. X-MWblocks are easy to test, integrate, align, and configure to 60 GHz and beyond. No messy Sweat Soldering or Silver Epoxy processes are required. X-MWblocks are (...)

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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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CLOCK-TREE-ARCHITECT — 時鐘樹架構程式設計軟體

時鐘樹架構是一款時鐘樹合成工具，可根據您的系統需求產生時鐘樹解決方案，進而簡化您的設計流程。此工具可從廣泛的計時產品資料庫中汲取資料，產生系統級多晶片計時解決方案。
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PLLATINUMSIM-SW — PLL loop filter, phase noise, lock time, and spur simulation tool

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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