Title :
A micropower battery-operated one-pin crystal oscillator
Author_Institution :
Siemens Pacesetter Inc., Sylmar, CA, USA
Abstract :
This paper describes the theory and analysis of a CMOS one-pin crystal oscillator suited for battery operated devices. The oscillator uses only one package pin. No other external components other than the crystal itself are needed. The oscillator is intended to operate at 32 kHz with current consumption in the range of 200-250 nA and a single supply voltage of -1.5 V. Both theoretical analysis and computer simulation are used to investigate small signal behavior, large signal operation, and the start-up condition for the oscillator. Effects of various chip parasitic elements on the performance of the oscillator are also examined using MATLAB and SPICE programs
Keywords :
CMOS analogue integrated circuits; SPICE; circuit analysis computing; crystal oscillators; equivalent circuits; -1.5 V; 200 to 250 nA; 32 kHz; CMOS oscillator; MATLAB; SPICE; chip parasitic elements; computer simulation; large signal operation; micropower battery-operated oscillator; one-pin crystal oscillator; small signal behavior; start-up condition; Batteries; Capacitors; Circuits; Diodes; Resistors; SPICE; Signal analysis; Very large scale integration; Voltage; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 1993., Proceedings of the 36th Midwest Symposium on
Conference_Location :
Detroit, MI
Print_ISBN :
0-7803-1760-2
DOI :
10.1109/MWSCAS.1993.343363
