LMX2541
- 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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | LMX2541 Ultra-Low Noise PLLatinum Frequency Synthesizer With Integrated VCO 数据表 (Rev. J) | PDF | HTML | 2014-12-31 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
LMX25412690EVAL — LMX25412690 评估板
LMX2541 评估板可简化对 LMX2541 器件的评估。LMX2541 器件的每个版本都有不同的评估板，但各版本都使用相同的指令和软件。
LMX25413030EVAL — LMX25413030 评估板
LMX2541 评估板可简化对 LMX2541 器件的评估。LMX2541 器件的每个版本都有不同的评估板，但各版本都使用相同的指令和软件。
LMX25413320EVAL — LMX25413320 评估板
LMX2541 评估板可简化对 LMX2541 器件的评估。LMX2541 器件的每个版本都有不同的评估板，但各版本都使用相同的指令和软件。
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 | (...) |
CLOCKDESIGNTOOL — Clock Design Tool Software
时钟设计工具软件可帮助选择器件、设计环路滤波器，并进行定时器件解决方案仿真。当您输入所需的输出频率和参考频率（可选）后，该工具就会提供能够满足指定要求的 TI 器件、分频器值，并推荐能够尽可能减少抖动的环路滤波器。
CLOCKDESIGNTOOL 教程视频
我要使用哪一个软件？
产品 | 环路滤波器和器件配置 + 仿真 | 模拟工具 | 器件寄存器编程 |
LMX24xx PLL 系列 | EasyPLL | ||
LMX25xx PLL+VCO 系列 | 时钟设计工具 | ||
LMK 抖动清除器和分配器 |
TICSPRO-SW — TICS Pro GUI and Live Programming Tool for Clocking Devices
德州仪器 (TI) 时钟和合成器 (TICS) 专业软件用于对具有以下前缀的产品编号的评估模块 (EVM) 进行编程：CDC、LMK 和 LMX。这些产品包括锁相环和电压控制振荡器 (PLL+VCO)、合成器和时钟器件。
CLOCK-TREE-ARCHITECT — 时钟树架构编程软件
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。
PLLATINUMSIM-SW — PLL 环路滤波器、相位噪声、锁定时间和杂散模拟工具
PLLATINUMSIM-SW 是一款仿真工具，允许用户创建我们 PLLatinum™ 集成电路的详细设计和仿真，其中包括 LMX 系列锁相环 (PLL) 和合成器。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| WQFN (NJK) | 36 | Ultra Librarian |
订购和质量
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