AD7706 AD采集 STM32单片机控制的采集，采用SPI控制技术， 2-/3-Channel 16-Bit, Sigma-Delta ADCsFUNCTIONAL BLOCK DIAGRAMFEATURESAD7705: Two Fully Differential Input Channel ADCsAD7706: Three Pseudo Differential Input Channel ADCs16 Bits No Missing Codes0.003% NonlinearityProgrammable Gain Front EndGains from 1 to 128Th

通过stm32ADC采集信号，通过官方dsp库进行fft变换后求的信号频率。可用