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LMX2541

現行

具整合式 VCO 的超低雜訊 PLLatinum 頻率合成器

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產品規格表

LMX2541

現行
產品規格表 立即訂購

產品詳細資料

Frequency (max) (MHz) 4000 Frequency (min) (MHz) 32 Normalized PLL phase noise (dBc/Hz) -226 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -125 Features Integrated VCO Current consumption (mA) 120 Integrated VCO Yes Operating temperature range (°C) -40 to 85 Rating Catalog Lock time (µs) (typ) (s) 80
Frequency (max) (MHz) 4000 Frequency (min) (MHz) 32 Normalized PLL phase noise (dBc/Hz) -226 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -125 Features Integrated VCO Current consumption (mA) 120 Integrated VCO Yes Operating temperature range (°C) -40 to 85 Rating Catalog Lock time (µs) (typ) (s) 80
WQFN (NJK) 36 36 mm² (6 mm × 6 mm)
  • Multiple Frequency Options Available
    (See Device Comparison Table)
  • Frequencies from 31.6 MHz to 4000 MHz
  • Very Low RMS Noise and Spurs
  • –225 dBc/Hz Normalized PLL Phase Noise
  • Integrated RMS Noise (100 Hz – 20 MHz)
    • 2 mRad (100 Hz – 20 MHz) at 2.1 GHz
    • 3.5 mRad (100 Hz - 20 MHz) at 3.5 GHz
  • Ultra Low-Noise Integrated VCO
  • External VCO Option (Internal VCO Bypassed)
  • VCO Frequency Divider 1 to 63 (all values)
  • Programmable Output Power
  • Up to 104-MHz Phase Detector Frequency
  • Integrated Low-Noise LDOs
  • Programmable Charge Pump Output
  • Partially Integrated Loop Filter
  • Digital Frequency Shift Keying (FSK) Modulation Pin
  • Integrated Reference Crystal Oscillator Circuit
  • Hardware and Software Power Down
  • FastLock Mode and VCO-Based Cycle Slip Reduction
  • Analog and Digital Lock Detect
  • 1.6-V Logic Compatibility
  • Multiple Frequency Options Available
    (See Device Comparison Table)
  • Frequencies from 31.6 MHz to 4000 MHz
  • Very Low RMS Noise and Spurs
  • –225 dBc/Hz Normalized PLL Phase Noise
  • Integrated RMS Noise (100 Hz – 20 MHz)
    • 2 mRad (100 Hz – 20 MHz) at 2.1 GHz
    • 3.5 mRad (100 Hz - 20 MHz) at 3.5 GHz
  • Ultra Low-Noise Integrated VCO
  • External VCO Option (Internal VCO Bypassed)
  • VCO Frequency Divider 1 to 63 (all values)
  • Programmable Output Power
  • Up to 104-MHz Phase Detector Frequency
  • Integrated Low-Noise LDOs
  • Programmable Charge Pump Output
  • Partially Integrated Loop Filter
  • Digital Frequency Shift Keying (FSK) Modulation Pin
  • Integrated Reference Crystal Oscillator Circuit
  • Hardware and Software Power Down
  • FastLock Mode and VCO-Based Cycle Slip Reduction
  • Analog and Digital Lock Detect
  • 1.6-V Logic Compatibility

The LMX2541 is an ultra low-noise frequency synthesizer which integrates a high performance delta-sigma fractional N PLL, a VCO with fully integrated tank circuit, and an optional frequency divider. The PLL offers an unprecedented normalized noise floor of -225 dBc/Hz and can be operated with up to 104 MHz of phase-detector rate (comparison frequency) in both integer and fractional modes. The PLL can also be configured to work with an external VCO.

The LMX2541 integrates several low-noise, high precision LDOs and output driver matching network to provide higher supply noise immunity and more consistent performance, while reducing the number of external components. When combined with a high quality reference oscillator, the LMX2541 generates a very stable, ultra low-noise signal.

The LMX2541 is offered in a family of 6 devices with varying VCO frequency range from 1990 MHz up to 4 GHz. Using a flexible divider, the LMX2541 can generate frequencies as low as 31.6 MHz.

The LMX2541 is a monolithic integrated circuit, fabricated in a proprietary BiCMOS process. Device programming is facilitated using a three-wire MICROWIRE interface that can operate down to 1.6 volts. Supply voltage ranges from 3.15 V to 3.45 V. The LMX2541 is available in a 36-pin 6-mm × 6-mm × 0.8-mm WQFN Package.

The LMX2541 is an ultra low-noise frequency synthesizer which integrates a high performance delta-sigma fractional N PLL, a VCO with fully integrated tank circuit, and an optional frequency divider. The PLL offers an unprecedented normalized noise floor of -225 dBc/Hz and can be operated with up to 104 MHz of phase-detector rate (comparison frequency) in both integer and fractional modes. The PLL can also be configured to work with an external VCO.

The LMX2541 integrates several low-noise, high precision LDOs and output driver matching network to provide higher supply noise immunity and more consistent performance, while reducing the number of external components. When combined with a high quality reference oscillator, the LMX2541 generates a very stable, ultra low-noise signal.

The LMX2541 is offered in a family of 6 devices with varying VCO frequency range from 1990 MHz up to 4 GHz. Using a flexible divider, the LMX2541 can generate frequencies as low as 31.6 MHz.

The LMX2541 is a monolithic integrated circuit, fabricated in a proprietary BiCMOS process. Device programming is facilitated using a three-wire MICROWIRE interface that can operate down to 1.6 volts. Supply voltage ranges from 3.15 V to 3.45 V. The LMX2541 is available in a 36-pin 6-mm × 6-mm × 0.8-mm WQFN Package.
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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 LMX2541 Ultra-Low Noise PLLatinum Frequency Synthesizer With Integrated VCO datasheet (Rev. J) PDF | HTML 2014/12/31

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LMX25412690EVAL — LMX25412690 評估板

The LMX2541 Evaluation Board simplifies the evaluation of the LMX2541 device. There is a different evaluation board for each option of the LMX2541 device, but they all use the same instructions and software.

使用指南: PDF
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開發板

LMX25413030EVAL — LMX25413030 評估板

The LMX2541 Evaluation Board simplifies the evaluation of the LMX2541 device. There is a different evaluation board for each option of the LMX2541 device, but they all use the same instructions and software.

使用指南: PDF
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開發板

LMX25413320EVAL — LMX25413320 評估板

The LMX2541 Evaluation Board simplifies the evaluation of the LMX2541 device. There is a different evaluation board for each option of the LMX2541 device, but they all use the same instructions and software.

使用指南: PDF
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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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我應該使用哪個軟體？

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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模擬型號

LMX2541 IBIS Model

SNOM472.ZIP (40 KB) - IBIS 模型
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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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封裝 針腳 CAD 符號、佔位空間與 3D 模型
WQFN (NJK) 36 Ultra Librarian
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