Title :
A MOS switched-capacitor ladder filter in SIMOX technology for high temperature applications up to 300°C
Author :
Verbeck, Michael ; Zimmermann, Christoph ; Fiedler, Horst-Lothar
Author_Institution :
Fraunhofer-Inst. fur Mikroelectron. Circuit & Syst., Duisburg, Germany
fDate :
7/1/1996 12:00:00 AM
Abstract :
This paper describes techniques and methods used to realize a seventh order switched-capacitor low pass filter in SIMOX technology. The filter has Bessel characteristic and a 3 dB-bandwidth of 20 Hz at a clock frequency of 100 kHz. Special design of transistors and transmission gates results in drastically reduced leakage currents at high temperatures. The power supply voltage of the switched-capacitor filter is 10 V. The temperature range is extended up to 300°C. Experimental results of the transistors, the transmission gates, the operational amplifier, and the complete filter are presented
Keywords :
MOS analogue integrated circuits; SIMOX; high-temperature techniques; ladder filters; low-pass filters; switched capacitor filters; 10 V; 100 kHz; 20 Hz; 300 C; Bessel filter; MOS switched-capacitor ladder filter; SIMOX technology; high temperature applications; leakage currents; operational amplifier; seventh order low pass filter; transistors; transmission gates; Aerospace industry; Circuits; Dielectric substrates; Diodes; Electrical equipment industry; Industrial control; Leakage current; Low pass filters; Operational amplifiers; Temperature distribution;
Journal_Title :
Solid-State Circuits, IEEE Journal of
