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 (NJH) 36 36 mm² (6 mm × 6 mm) WQFN (NJG) 36 36 mm² (6 mm × 6 mm)
  • 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 下載最新的英文版本 日期
* 資料表 LMX2531 High-Performance Frequency Synthesizer System With Integrated VCO datasheet (Rev. S) PDF | HTML 2014/12/31
應用說明 AN-1879 Fractional N Frequency Synthesis (Rev. B) 2021/11/18
應用說明 AN-1558 Clocking High-Speed A/D Converters (Rev. B) 2013/5/1
應用說明 AN-1821 CPRI Repeater System (Rev. A) 2013/4/26
應用說明 Selecting Amplifiers, ADCs, and Clocks for High-Performance Signal Paths 2007/9/13
應用說明 Generating Precision Clocks for Time- Interleaved ADCs 2007/8/2

設計與開發

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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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支援軟體

CLOCKDESIGNTOOL — Clock Design Tool Software

時脈設計工具軟體可協助進行零件選擇、迴路濾波器設計,以及計時裝置解決方案模擬。當您輸入所需的輸出頻率和參考頻率 (選用) 時,此工具可提供符合指定需求、分頻器值和建議迴路濾波器的 TI 裝置,以將抖動降到最低。

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產品

迴路濾波器和裝置配置 + 模擬

模擬工具

裝置暫存器程式化

LMX24xx PLL 系列

EasyPLL

時脈系統架構

CodeLoader

LMX25xx PLL+VCO 系列

時脈設計工具

LMK 抖動清除器及分配器

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支援軟體

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

德州儀器 (TI) 的時鐘及合成器 (TICS) 專業級軟體用於編程具有以下前置字元的產品編號的評估模組 (EVM):CDC、LMK 和 LMX。這些產品包括鎖相迴路及電壓控制振盪器 (PLL+VCO)、合成器和時鐘裝置。

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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 迴路濾波器、相位雜訊、鎖定時間與雜散模擬工具

PLLATINUMSIM-SW 為一模擬工具,可讓使用者建立 PLLatinum™ 積體電路的詳細設計和模擬,包括 LMX 系列的相位鎖定迴路 (PLL) 及合成器。

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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

ADC12D1600RFRB 參考設計提供了一個平台,用於展示包含時脈、電源管理和訊號處理的高速數位器應用。此參考設計採用 1.6 GSPS ADC12D1600RF 裝置、板載 FPGA Xilinx Virtex 4 和高效能時脈合成器 LMX2531,以滿足 9 位元 ENOB 高速數位器的系統需求。

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
WQFN (NJH) 36 Ultra Librarian
WQFN (NJG) 36 Ultra Librarian

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