LC oscillator driver for safety critical applications [automotive applications]

Author

Horsky, Pavel

Author_Institution

AMI Semicond. Czech, Brno, Czech Republic

fYear

2005

fDate

7-11 March 2005

Firstpage

159

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Design, Automation and Test in Europe, 2005. Proceedings

ISSN

1530-1591

Print_ISBN

0-7695-2288-2

Type

conf

DOI

10.1109/DATE.2005.194

Filename

1395813