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Analog Circuit Design by Jim Williams, Bob Dobkin

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20

Some techniques for direct digitization of transducer outputs

Jim Williams

Almost all transducers produce low level signals. Normally, high accuracy signal conditioning amplifiers are used to boost these outputs to levels which can easily drive cables, additional circuitry, or data converters. This practice raises the signal processing range well above the error floor permitting high resolution over a wide dynamic range.

Some emerging trends in transducer-based systems are causing the use of signal conditioning amplifiers to be reevaluated. While these amplifiers will always be useful, their utilization may not be as universal as it once was. In particular, many industrial transducer-fed systems are employing digital transmission of signals to ...

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