Time incremental sampling differential measurement circuit composed of SMP04 and instrumentation amplifier

Published:2012/8/23 20:58:00 Author:Ecco | Keyword: Time incremental, sampling , differential , measurement circuit, instrumentation amplifier | From:SeekIC

The circuit is used for measuring the difference of signal voltage at the different time points, that is the difference between voltages V1 and V2 at t1 and t2. Because the circuit uses the sampling and maintaining amplifier with the same package of SMP04, the symmetry of the circuit is good. The signal is output by SMP04, then it is sent to the instrument amplifier AMP02 for differential amplification, RG is used to set the instrument amplifier gain. VOUT = G (V1-V2), G = 50k/RG +1.



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