the instrumentation amplifier or mixer gain and phase difference circuit composed of AD8302

Published:2011/8/23 1:34:00 Author: | Keyword: instrumentation amplifier , mixer gain, phase difference | From:SeekIC

AD8302 is used to measure the phase difference and gain of the amplifier or the frequency mixing.The 20dB directional couple A and B do the sampling to the output and input signals of the amplifier.It can keep AD8302 signal level within the dynamic range by using 10dB resistance attenuator and 1dB resistance attenuator.To obtain the best performance,the power level POPT equals -30Bm(-43dBv) when two channels corresponding to the 50Ω characteristic impedance.The coupling coefficient and the attenuation coefficient of channel A and B is determained by the formula:in the formula,CA and CA are the coupling coefficient.LA and LB are the attenuation coefficient.GNOM is the nominal gain of the amplifier.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Measuring_and_Test_Circuit/the_instrumentation_amplifier_or_mixer_gain_and_phase_difference_circuit_composed_of_AD8302.html

Print this Page | Comments | Reading(3)