ADA4528-x use in Low Frequency Sensor Sensor Singal Conditioning Systems

Document created by analog-archivist Employee on Feb 23, 2016
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Why are zero-drift amplifiers typically used in low frequency sensor signal
conditioning  systems?


A sensor typically produces low output voltage that requires a signal
conditioning circuit with  high gain, low noise and accurate dc perfor¬mance.
However, offset voltage, drift, and 1/f noise  cause errors, especially for dc
or low frequencies and low level voltage measurements. These dc  inaccuracies
amplified by the circuit gain, causes a shift in the output voltage. Therefore,
it is  crucial to minimize offset voltage and drift as well as eliminate 1/f
noise with a zero-drift  amplifier for optimum signal conditioning.