A SiGe BiCMOS Instrumentation Channel for Extreme Environment Applications

الملخص EN

An instrumentation channel is designed, implemented, and tested in a 0.5-μm SiGe BiCMOS process.

The circuit features a reconfigurable Wheatstone bridge network that interfaces an assortment of external sensors to signal processing circuits.

Also, analog sampling is implemented in the channel using a flying capacitor configuration.

The analog samples are digitized by a low-power multichannel A/D converter.

Measurement results show that the instrumentation channel supports input signals up to 200 Hz and operates across a wide temperature range of -180°C to 125°C.

This work demonstrates the use of a commercially available first generation SiGe BiCMOS process in designing circuits suitable for extreme environment applications.