What is supply variation rejection (SVR) of an operational amplifier?
Latest Updated:12/01/2011
Question:
What is supply variation rejection (SVR) of an operational amplifier?
Answer:
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.
Suitable Products
Operational Amplifiers |
USB2.0 Host/Peripheral Controller |
M66596, R8A66597 |
UPD720150 |