Application Of Low Power Microtechnology To Process Instrumentation: Some Case Examples

This paper, using some product examples in the field of process instrumentation, seeks to examine some of the problems that can arise when applying CMOS technology, and offers some practical solutions to these problems. Briefly mentioned are some of the reasons why CMOS is a desirable technology for process instrumentation applications. The specific problems discussed are speed, power supply spikes and 'latch up'. The overall conclusion is that CMOS technology can be successfully applied in process instrumentation, but the designer who is more familiar with NMOS and TTL devices should take into account the different characteristics of CMOS.