Title :
A cell based super low power CMOS crystal oscillator with `on chip´ tuning capacitors
Author :
Mahabadi, John K.
Author_Institution :
Semicond. Product Sector, Motorola Inc., Chandler, AZ, USA
Abstract :
The author presents a cell based, super low power CMOS crystal oscillator with no external components. this oscillator provides a typical dynamic current of 200 nano amps at 3.0 volts battery. The oscillator tuning is accomplished by programming the `on chips´ variable input capacitors. It is totally nonvolatile with over ten years of operation from a single 3.0 volt lithium battery. It has been fabricated in both 3 μ, p- well and 1.5 μ, n-well technologies
Keywords :
CMOS integrated circuits; tuning; variable-frequency oscillators; 1.5 micron; 200 nA; 3 V; 3 micron; Pierce type; low power CMOS crystal oscillator; n-well technology; nonvolatile type; onchip tuning capacitor; oscillator tuning; p-well technology; variable input capacitors; Batteries; Capacitors; Circuits; Clocks; Energy consumption; Lithium; Oscillators; Power supplies; Resistors; Tuning;
Conference_Titel :
ASIC Conference and Exhibit, 1991. Proceedings., Fourth Annual IEEE International
Conference_Location :
Rochester, NY
Print_ISBN :
0-7803-0101-3
DOI :
10.1109/ASIC.1991.242860
