SNAA449
June 2025
LMX2820
1
Abstract
Trademarks
1
Introduction
2
Various Options in Instant Calibration
2.1
When Delay for Instant Calibration Needs to be Increased From 2.5μs to 5μs
2.2
Generating the Lookup Table for Instant Calibration With the VCO Doubler
2.3
Reading Back the Instant Calibration Lookup Table Through SPI
2.4
Writing the Lookup Table Through SPI
2.5
Dealing With Case When Phase Detector Frequency is Changed Without Re-generating the Lookup Table
3
Summary
4
References
Application Note
Using Instant Calibration With the LMX2820