SDAA225
January 2026
LMX2594
1
Abstract
Trademarks
1
Introduction
2
VCO Basic Theory and Key Factors
2.1
VCO
2.2
VCO Frequency Range
2.3
Phase Noise
3
CMOS LC VCO Design
3.1
PLL Structure
3.2
LC VCO Structure and Operation
3.3
Each Circuit and Block Operation
3.3.1
Tuning Varactor Bias Circuit
3.3.2
7 Bit MIM Capacitor Bank
3.4
Simulation
3.5
Implementation and Measurement Results
3.5.1
Layout
3.5.2
Fabrication and Measurement Results
4
Summary
5
References
Application Note
VCO Design Basic and Key Parameter for GSM Application