Analog signal converter using rail-to-rail amplifier dedicated to high-speed oscillators

This paper presents the design and simulations of an analog circuit able to reshape an input analog signal with amplitude higher than 100 mV and DC level included in the supply range. The circuit is dedicated but not limited to crystal oscillators and operates in the frequency range from 4 MHz to 48 MHz. The circuit is designed in 40 nm standard CMOS process technology. Simulation and post-layout simulation results achieve specifications in all process cases. The circuit can operate over the power supply range from 1.6 V to 3.6 V. The maximum power consumption of the overall circuit is 300 μA at 48 MHz.