Title :
LC oscillator driver for safety critical applications [automotive applications]
Author_Institution :
AMI Semicond. Czech, Brno, Czech Republic
Abstract :
A CMOS harmonic signal LC oscillator driver, for automotive applications, working in a harsh environment with high safety critical requirements, is described. The driver can be used with a wide range of external component parameters (LC resonance network of a sensor). The quality factor of the external LC network can vary over two decades. Amplitude regulation of the driver is digitally controlled and the DAC is constructed as exponential with piece-wise-linear (PWL) approximation. Low current consumption for high quality resonance networks is achieved. The realized oscillator is robust, used in safety critical applications, and has low EMC emissions.
Keywords :
CMOS integrated circuits; Q-factor; RLC circuits; automotive electronics; digital-analogue conversion; driver circuits; integrated circuit reliability; low-power electronics; microwave oscillators; piecewise linear techniques; redundancy; 2 to 5 MHz; CMOS harmonic signal LC oscillator; LC network quality factor; LC oscillator driver; digitally controlled amplitude regulation; exponential DAC; low EMC emissions; low current consumption; off-chip RLC network; piece-wise-linear approximation; redundant systems; safety critical automotive applications; sensor LC resonance network; Ambient intelligence; Automotive applications; Coils; Digital control; Driver circuits; Q factor; RLC circuits; Resonance; Safety; Voltage-controlled oscillators;
Conference_Titel :
Design, Automation and Test in Europe, 2005. Proceedings
Print_ISBN :
0-7695-2288-2
DOI :
10.1109/DATE.2005.194
