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A Design of Digital Instrumentation Amplifier converting standard sensor output signals into 5V voltage-output  

Cha, Hyeong-Woo (Department of Electronics Engineering, Cheongju University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.48, no.11, 2011 , pp. 41-47 More about this Journal
Abstract
A novel digital instrumentation amplifier(DIA) converting universal signal inputs into 5V voltage-output for industry standard sensor signal processing was designed. The circuit consists of a commercial instrumentation amplifier, seven analog switches, two voltage references of 1.0V and -10.0V, and four resistors. The converting principle is the circuit reconstruction by switches for resistor values and reference voltages according to input signals. The simulation result shows that the DIA has a good output voltage characteristics of 0~5V for the input voltage of 0V~5V, 1V~5V, -10V~+10V, and 4mA~20mA. The nonlinearity error was less than 0.1% for the four type signal inputs.
Keywords
instrumentation amplifier; standard sensor output; signal converter; sensor interface; analog circuits;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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