ZHCSEK4E
December 2015 – August 2022
LMX2582
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Functional Description
7.3.1
Input Signal
7.3.2
Input Signal Path
7.3.3
PLL Phase Detector and Charge Pump
7.3.4
N Divider and Fractional Circuitry
7.3.5
Voltage Controlled Oscillator
7.3.6
VCO Calibration
7.3.7
Channel Divider
7.3.8
Output Distribution
7.3.9
Output Buffer
7.3.10
Phase Adjust
7.4
Device Functional Modes
7.4.1
Power Down
7.4.2
Lock Detect
7.4.3
Register Readback
7.5
Programming
7.5.1
Recommended Initial Power on Programming Sequence
7.5.2
Recommended Sequence for Changing Frequencies
7.6
Register Maps
7.6.1
LMX2582 Register Map – Default Values
7.6.1.1
Register Descriptions
8
Application and Implementation
8.1
Application Information
8.1.1
Optimization of Spurs
8.1.1.1
Understanding Spurs by Offsets
8.1.1.2
Spur Mitigation Techniques
8.1.2
Configuring the Input Signal Path
8.1.2.1
Input Signal Noise Scaling
8.1.3
Input Pin Configuration
8.1.4
Using the OSCin Doubler
8.1.5
Using the Input Signal Path Components
8.1.5.1
Moving Phase Detector Frequency
8.1.5.2
Multiplying and Dividing by the Same Value
8.1.6
Designing for Output Power
8.1.7
Current Consumption Management
8.1.8
Decreasing Lock Time
8.1.9
Modeling and Understanding PLL FOM and Flicker Noise
8.1.10
External Loop Filter
8.2
Typical Application
8.2.1
Design for Low Jitter
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Application Curve
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Device Support
9.1.1
Development Support
9.2
Documentation Support
9.2.1
Related Documentation
9.3
接收文档更新通知
9.4
支持资源
9.5
Trademarks
9.6
Electrostatic Discharge Caution
9.7
术语表
10
Mechanical, Packaging, and Orderable Information
1
特性
输出频率范围为 20 至
5500
MHz
相位噪声性能行业领先
VCO 相位噪声:在输出为
1.8
GHz 且偏移为 1MHz 时为
–144.5
dBc/Hz
归一化 PLL 本底噪声:-231dBc/Hz
归一化 PLL 闪烁噪声:-126dBc/Hz
47
fs RMS 抖动(12kHz 至 20MHz)(对于
1.8
GHz 输出)
输入时钟频率高达 1400MHz
相位检测器频率高达 200MHz,
且在整数 N 模式中高达 400MHz
支持分数 N 和整数 N 模式
双差分输出
减少毛刺的创新型解决方案
可编程相位调整
可编程电荷泵电流
可编程输出功率水平
串行外设接口 (SPI) 或 uWire(4 线制串行接口)
单电源运行:3.3V
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