8KHz, Active low pass Filter for Digital Radio

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8KHz, Active low pass Filter for Digital Radio
LTC1064-2, 8-Pole Butterworth low pass Filter Used for THD Testing. The graph shows THD versus input amplitude. A second horizontal scale labels SNR. The graph clearly shows, for instance, that for a 1.5VRMS input the THD is below -70dB and the SNR is below -85dB