《AD637有效值变换器》.pdf

High Precision, Wideband RMS-to-DC Converter AD637 FEATURES FUNCTIONAL BLOCK DIAGRAM High accuracy 0.02% maximum nonlinearity, 0 V to 2 V rms input BUFF IN BUFF 0.10% additional error to crest factor of 3 OUT Wide bandwidth 25kΩ 8 MHz at 2 V rms input RMS OUT 600 kHz at 100 mV rms VIN ABSOLUTE SQUARER/ VALUE DIVIDER Computes True rms 25kΩ CAV Square DEN INPUT Mean square dB OUTPU