最近用DAC902 差分输出后级接两个50的电阻后再接OPA690,发现输出电压峰峰值和理论计算有偏差?可能是哪些原因
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我也遇到类似的问题。一块板,除了实际增益略低于理论增益其他都正常。另一块板理论增益应该是5,实际增益却是3.5。当输出正弦波达到30kHz的时候,IOUT输出开始畸变。