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RF PLL 與合成器

LMX2531

現行

具整合式 VCO 的高效能頻率合成器系統

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產品規格表

LMX2531

現行
產品規格表 立即訂購

產品詳細資料

Frequency (max) (MHz) 3132 Frequency (min) (MHz) 553 Normalized PLL phase noise (dBc/Hz) -212 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -104 Features Integrated VCO Current consumption (mA) 34 Integrated VCO Yes Operating temperature range (°C) -40 to 85 Rating Catalog Lock time (µs) (typ) (s) 300
Frequency (max) (MHz) 3132 Frequency (min) (MHz) 553 Normalized PLL phase noise (dBc/Hz) -212 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -104 Features Integrated VCO Current consumption (mA) 34 Integrated VCO Yes Operating temperature range (°C) -40 to 85 Rating Catalog Lock time (µs) (typ) (s) 300
WQFN (NJG) 36 36 mm² 6 x 6 WQFN (NJH) 36 36 mm² 6 x 6
  • Multiple Frequency Options Available
    • See Device Information Table
    • Frequencies From: 553 MHz to 3132 MHz
  • PLL Features
    • Fractional-N Delta-Sigma Modulator Order
      Programmable up to Fourth Order
    • FastLock/Cycle Slip Reduction with Timeout
      Counter
    • Partially Integrated, Adjustable Loop Filter
    • Very Low Phase Noise and Spurs
  • VCO Features
    • Integrated Tank Inductor
    • Low Phase Noise
  • Other Features
    • 2.8-V to 3.2-V Operation
    • Low Operating Current
    • Low Power-Down Current
    • 1.8-V MICROWIRE Support
    • 36-Pin 6-mm × 6-mm × 0.8-mm WQFN Package
  • Multiple Frequency Options Available
    • See Device Information Table
    • Frequencies From: 553 MHz to 3132 MHz
  • PLL Features
    • Fractional-N Delta-Sigma Modulator Order
      Programmable up to Fourth Order
    • FastLock/Cycle Slip Reduction with Timeout
      Counter
    • Partially Integrated, Adjustable Loop Filter
    • Very Low Phase Noise and Spurs
  • VCO Features
    • Integrated Tank Inductor
    • Low Phase Noise
  • Other Features
    • 2.8-V to 3.2-V Operation
    • Low Operating Current
    • Low Power-Down Current
    • 1.8-V MICROWIRE Support
    • 36-Pin 6-mm × 6-mm × 0.8-mm WQFN Package

The LMX2531 is a low-power, high-performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and adjustable. Ultra-low noise and high-precision LDOs are integrated for the PLL and VCO, which yield higher supply-noise immunity and more consistent performance. When combined with a high-quality reference oscillator, the LMX2531 device generates very stable, low-noise local-oscillator signals for up and down conversion in wireless communication devices. The LMX2531 device is a monolithic integrated circuit, fabricated in an advanced BiCMOS process. Several different versions of this product accommodate different frequency bands.

The LMX2531 is a low-power, high-performance frequency synthesizer system which includes a fully integrated delta-sigma PLL and VCO with fully integrated tank circuit. The third and fourth poles are also integrated and adjustable. Ultra-low noise and high-precision LDOs are integrated for the PLL and VCO, which yield higher supply-noise immunity and more consistent performance. When combined with a high-quality reference oscillator, the LMX2531 device generates very stable, low-noise local-oscillator signals for up and down conversion in wireless communication devices. The LMX2531 device is a monolithic integrated circuit, fabricated in an advanced BiCMOS process. Several different versions of this product accommodate different frequency bands.
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重要文件 類型 標題 格式選項 日期
* Data sheet LMX2531 High-Performance Frequency Synthesizer System With Integrated VCO datasheet (Rev. S) PDF | HTML 2014年 12月 31日
Application note AN-1879 Fractional N Frequency Synthesis (Rev. B) 2021年 11月 18日
Application note AN-1558 Clocking High-Speed A/D Converters (Rev. B) 2013年 5月 1日
Application note AN-1821 CPRI Repeater System (Rev. A) 2013年 4月 26日
Application note Selecting Amplifiers, ADCs, and Clocks for High-Performance Signal Paths 2007年 9月 13日
Application note Generating Precision Clocks for Time- Interleaved ADCs 2007年 8月 2日

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軟體程式設計工具

CODELOADER — CodeLoader Device Register Programming v4.19.0

The CodeLoader 4 software is used to program the LMX PLLs and LMK timing devices through either the USB or line print terminal (LPT) port of a computer. This software also provides information on how to program the device by showing the bits that are actually sent.

Which software do I use?

Product

(...)

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CLOCKDESIGNTOOL — Clock Design Tool Software

The Clock Design Tool software helps with part selection, loop filter design and simulation of timing device solutions. When you enter desired output frequencies and a reference frequency (optional), the tool provides TI devices to meet the specified requirements, divider values and a recommended (...)

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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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設計工具

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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設計工具

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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參考設計

TIDA-00479 — 適用於 GSPS ADC 的最佳時鐘來源參考設計

The ADC12D1600RFRB reference design provides a platform to demonstrate a high speed digitizer application which incorporates clocking, power management, and signal processing. The reference design utilizes the 1.6 GSPS ADC12D1600RF device, onboard FPGA Xilinx Virtex 4, and high performance clock (...)
Design guide: PDF
電路圖: PDF
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WQFN (NJG) 36 Ultra Librarian
WQFN (NJH) 36 Ultra Librarian
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