88 LC Voltage-Controlled Oscillators Zhangwen Tang Advisor Professor Hao Min zwtang@fudan.edu.cn,http://10.12.240.202 Jun.4th,2004 ASIC System State-Key Laboratory, Fudan University Copyright©2001-2004，All Rights Reserved by Zhangwen Tang
LC Voltage LC Voltage-Controlled Oscillators Controlled Oscillators Zhangwen Tang Advisor : Professor Hao Min zwtang@fudan.edu.cn, http://10.12.240.202 Jun. 4th, 2004 ASIC & System State-Key Laboratory, Fudan University Copyright © 2001-2004, All Rights Reserved by Zhangwen Tang
http:∥10.12.240.202，Copyright©2001-2004，Zhangwen Tang Content ▣ Introduction 口 Fundamentals of LC VCOs ▣ On-chip inductors 口 Varactors and F-V tuning curve ▣ Optimization of LC VCOs ▣ Techniques of lowering phase noise ▣ Design examples Conclusion and prospect ASIC System State-Key Laboratory,Fudan University -2
-2- ASIC & System State-Key Laboratory, Fudan University http://10.12.240.202, Copyright © 2001-2004, Zhangwen Tang Content Content Introduction Fundamentals of LC VCOs On-chip inductors Varactors and F-V tuning curve Optimization of LC VCOs Techniques of lowering phase noise Design examples Conclusion and prospect
http:∥10.12.240.202，Copyright©2001-2004 Zhangwen Tang Introduction Discrete TV Tuner Module Novel Architecture for CMOS TV Tuner:DL/F Double Conversions with Low /F Up ConversionDown Conversion Mixer Rejected· Mixer Filter H工工 用 Band Limited Filter LNA 用 First ISecond VCo I vco I Off-Chip PLL Local Oscillators DLIF Architecture of TV tuner for DVB system ASIC System State-Key Laboratory,Fudan University 3
-3- ASIC & System State-Key Laboratory, Fudan University http://10.12.240.202, Copyright © 2001-2004, Zhangwen Tang Introduction Introduction PLL Band Limited Filter LNA First VCO Up Conversion Mixer Image- Rejected Filter AGC DLIF Architecture of TV tuner for DVB system Second VCO Down Conversion Mixer IF Off-Chip Local Oscillators Novel Architecture for CMOS TV Tuner: DLIF Double Conversions with Low IF Discrete TV Tuner Module
http://10.12.240.202,Copyright@2001-2004,Zhangwen Tang Frequency Synthesizers LC Tank VCO ☒ PFD LPF L01 12.5MHz 1150-1975MHz ÷92~158 ÷50 250KHz LC Tank VCO PFD LPF 。LO2 1063.5-1096.5MHz 4253~4387 ASIC System State-Key Laboratory,Fudan University 4
-4- ASIC & System State-Key Laboratory, Fudan University http://10.12.240.202, Copyright © 2001-2004, Zhangwen Tang PFD LPF 92~158 ÷ ÷ 50 PFD LPF ÷ 4253~4387 12.5MHz 250KHz LO1 LO2 1150－1975MHz 1063.5－1096.5MHz LC Tank VCO LC Tank VCO Frequency Synthesizers Frequency Synthesizers
http://10.12.240.202,Copyright 2001-2004,Zhangwen Tang LC Voltage-Controlled Oscillators High Q,Low Parasitic Resistor Inductors High Q,High Tuning Range MOS Varators Mp1 Mp2 NP+N P+P N-Well N-Well b 2L 0 Q00 N+N+ N-Well Design issues ·Low phase noise ·Low power Mn1 Mn2 Wideband tuning range ·F-V tuning curve ·Quadrature output Mn3 ·etc.. CMOS Complementary Cross-coupled-Gm LC VCO ASIC System State-Key Laboratory,Fudan University 5
-5- ASIC & System State-Key Laboratory, Fudan University http://10.12.240.202, Copyright © 2001-2004, Zhangwen Tang 2L C Vc Mn1 Mn2 Mp1 Mp2 Mn3 C High Q, Low Parasitic Resistor Inductors High Q, High Tuning Range MOS Varators LC Voltage LC Voltage-Controlled Oscillators Controlled Oscillators CMOS Complementary Cross-coupled –Gm LC VCO Design issues • Low phase noise • Low power • Wideband tuning range • F-V tuning curve • Quadrature output • etc …