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A Differential Output Delay Cell Based Ring VCO for Improved Jitter Performance

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2 Author(s)
Gautam Kumar Singh ; Pulsecore Semiconductor (I) Pvt Ltd, Bangalore gautam@pulsecoresemi.com ; H S Jamadagni

This paper presents a multi-stage 3.3 V ring VCO in 0.35 mum CMOS technology with differential control and complimentary outputs based on complimentary latch and pass transistor input stage. The differential structure helps in rejecting the substrate and supply noise commonly. It has improved supply noise rejection. Jitter and phase noise due to substrate and supply noise is discussed and the results has been compared with the previous reported VCO architectures.

Published in:

2007 International Symposium on Integrated Circuits

Date of Conference:

26-28 Sept. 2007