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产品详细信息

参数

Integrated VCO Yes Output frequency (Min) (MHz) 32 Output frequency (Max) (MHz) 4000 Normalized PLL phase noise (dBc/Hz) -226 Current consumption (mA) 120 1/f noise (10-kHz offset at 1-GHz carrier) (dBc/Hz) -125 open-in-new 查找其它 RF PLL 与合成器

特性

  • 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
open-in-new 查找其它 RF PLL 与合成器

描述

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.

open-in-new 查找其它 RF PLL 与合成器
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技术文档

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类型 标题 下载最新的英文版本 日期
* 数据表 LMX2541 Ultra-Low Noise PLLatinum Frequency Synthesizer With Integrated VCO 数据表 (Rev. J) 2014年 12月 31日
用户指南 LMX2541xxxx Evaluation Board User's Guide (Rev. B) 2014年 10月 6日
用户指南 适用于 Xilinx FPGA 的模拟器件 解决方案指南 2012年 4月 24日

设计与开发

有关其他条款或所需资源,请点击下面的任何链接来查看详情页面。

硬件开发

评估板 下载
LMX25412380 评估板
LMX25412380EVAL
document-generic 用户指南
399
说明

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.

评估板 下载
LMX25412690 评估板
LMX25412690EVAL
document-generic 用户指南
399
说明

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.

评估板 下载
LMX25413030 评估板
LMX25413030EVAL
document-generic 用户指南
399
说明

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.

评估板 下载
LMX25413320 评估板
LMX25413320EVAL
document-generic 用户指南
399
说明

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.

评估板 下载
LMX25413740 评估板
LMX25413740EVAL
document-generic 用户指南
399
说明

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.

软件开发

应用软件和框架 下载
时钟设计工具 - 环路滤波器和器件配置 + 仿真
CLOCKDESIGNTOOL 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 (...)
应用软件和框架 下载
德州仪器 (TI) PLLatinum 仿真工具
PLLATINUMSIM-SW 利用 PLLatinum Simulator Tool,可进行德州仪器 (TI) LMX 系列的 PLL 和合成器详细设计和仿真。
特性
  • 基于电流、成本、相位噪声和封装的器件选择
  • 针对无源和有源滤波器的滤波器设计(高达 4 级)
  • 相位噪声仿真,包括 PLL、分数引擎、VCO、输入、分频器和环路滤波器
  • 杂散仿真,包括相位检测器和分数。
  • 锁定时间仿真,包括 VCO 数字校准时间
  • 详细波特图仿真
应用软件和框架 下载
德州仪器 (TI) 时钟和合成器 (TICS) Pro 软件
TICSPRO-SW TICS 专业版软件用于对 CDC、LMK 和 LMX 的 EVM 进行编程。这些器件包含 PLL+VCO、合成器和时钟器件。
特性
  • 通过 USB2ANY 或板载 USB 接口对 EVM 进行编程。
  • 导出编程配置以在终端应用中使用。
IDE、配置、编译器或调试器 下载
CodeLoader 器件寄存器编程
CODELOADER 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

Loop (...)

设计工具和仿真

仿真模型 下载
SNOM472.ZIP (40 KB) - IBIS Model
设计工具 下载
时钟树架构编程软件
CLOCK-TREE-ARCHITECT 时钟树架构是一款时钟树综合工具,可根据您的系统要求生成时钟树解决方案,从而帮助您简化设计流程。该工具从庞大的时钟产品数据库中提取数据,然后生成系统级多芯片时钟解决方案。
特性
  • 接受客户特定的设计要求,如输入频率、输出频率、时钟格式和时钟计数
  • 在生成时钟树时考虑各种高级规范,如本底噪声和相位确定性要求
  • 提供清晰且直观的方框图
  • 评估每个产品和系统的关键性能指标(面积、价格、抖动和功率)
  • 生成设计报告(带有指向数据表、培训材料和软件工具的快速链接),以供将来参考

CAD/CAE 符号

封装 引脚 下载
(NJK) 36 了解详情

订购与质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/FIT 估算
  • 材料成分
  • 认证摘要
  • 持续可靠性监测

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