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Building a battery operated auto ranging DVM with the ICL7106

Posted: 28 Apr 2009 ?? ?Print Version ?Bookmark and Share

Keywords:battery? panel meter DVM? ADC IC?

In the field of DVM design, three areas are being addressed with vigor: size, power dissipation and novelty. The handheld portable multimeter has become popular since low power dissipation devices enabled battery operation, LSI ADC reduced IC count, and novelties such as conductance, automatic range scaling and calculating were included to entice the user.

This application note describes a technique for auto-ranging a battery operated DVM suitable for panel meter applications. Also, circuit ideas will be presented for conductance and resistance measurement, 9V battery and 5V supply operations, and current measurement.

View the PDF document for more information.





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