Input signal is WAWE-1, WAVE-2 is signal amplifier and input to the ADC. WAVE-LCD is waveform acquisition software to draw, the waveform VIN + amplitude in the ADC for LCD display waveform is right of 0.5-2.5V; but, more than amplitude after the emergence of the red circle in the waveform of the problem
WVAE-1
WAVE-2
WAVE-LCD
Schematic
Hewei
hew@wonhere.cn