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What is supply variation rejection (SVR)?

April 26, 2017rejection supply svr variation

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What is supply variation rejection (SVR)?

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A1 SVR is the ratio of the power supply voltage to the varied input offset voltage when the input offset voltage has changed due to a change in the power supply voltage. SVR expresses the extent to which power supply ripple or noise can be suppressed in the device. SVR=Δ(V+-V-)/ΔVIO Example) SVR in the uPC801 is 76 dB (typ). From this it can be calculated that when the SVR is 6.3 × 103 and the power supply voltage varies temporarily by 0.5 V due to external disturbance, VIO varies by 79 μV.