Abstract
This device accepts an analog signal from 0 to +14 V, automatically changes gain to condition the analog output to the limits of a ±1 V A/D converter, and transmits the gain mode as two digital bits. A computer with a 10-bit A/D converter and two sense lines uses this device to obtain the dynamic range of a 16-bit A/D converter. The relatively simple principle of the circuit may be of interest to expand the voltage sensitivity range of other analog devices for slowly changing signals.
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Development was supported by the National Research Council of Canada under Grant APA-145.
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Richmond, C.F., Nilsson, T.H. Autoranging amplifier expands computer’s A/D sensitivity by two decades. Behavior Research Methods & Instrumentation 7, 471–473 (1975). https://doi.org/10.3758/BF03201563
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DOI: https://doi.org/10.3758/BF03201563