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adc6140evm-pdk 系列开发板能否用于接收放大640hz-200khz的频率信号，放大信号接USB输出信号是什么格式，需要用上位机程序解码吗
您好，
tlv320adc6140芯片输入信号频率最高80 kHz（数据手册 8.3.6 Signal-Chain Processing，
但adc6140evm-pdk由于48KHZ采样率的原因，可以支持到20KHZ.（评估板用户手册 2.1.1.2 Optical or Auxilary Analog Audio Input）
USB音频格式可以是TDM或I2S格式.
