Most data-acquisition systems with wide dynamic range need a method of adjusting the input-signal level to the analog-to-digital converter (ADC) to ensure the maximum input signal will be fairly near to the ADC's full-scale input voltage (note that a typical ADC's full-scale input-voltage range is between 1 V and 10 V). At the same time, the gain applied to a sensor output may also need to be adjusted during run time, for example, to compensate the nonlinear output across the temperature range...
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