Analysis and design of a fully-integrated Colpitts oscillator operating at ultra-low-voltages

作者：Machado Marcio Bender^*; Schneider Marcio Cherem; Novack Daniel Lucas; Galup Montoro Carlos

来源：Analog Integrated Circuits and Signal Processing, 2015, 85(1): 27-36.

DOI：10.1007/s10470-015-0581-4

• Ultra-low-voltage circuits
• Ultra-low-voltage oscillators
• MOSFET analog circuits
• Zero-VT transistor
• Energy harvesting

This paper presents an enhanced-swing Colpitts oscillator that operates from supply voltages below 4kT/q. The oscillation frequency, start-up condition, and amplitude of oscillation were analyzed. The condition for the minimum voltage gain, extended to the minimum supply voltage, required for operation of the Colpitts oscillator is derived. Measurement results obtained for a prototype integrated in the IBM 130 nm technology demonstrate the operation of the oscillator with 86 mV of supply voltage.

• 出版日期2015-10