The Design of Wideband DC Amplifier System

Through MCU AT89S52 control TLV5638 to change the gain of AD8 336,a Wideband DC Amplifier is designed.The design realized a continuous change gain and pre-gain and display functions.In the wideband DC Amplifier the voltage is continuously adjustable from 0 dB to 60 dB.The gain of pass band 0～10 MHz is 3 dB;the variety band gain less than 1 dB is the band width 0～9 MHz.The output voltage is sine waveform without any distortion,its RMS V0≥10 V.