for analog audio processors,how should unused input signal pins be handled in a product that operates with one or two positive power supplies?|faq|rohm semiconductor-凯发线上登陆下载网址
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since the voltage at the input terminal is a bias voltage, it is recommended to connect it to gnd via a coupling capacitor. it is also possible to leave open the unused input signal pins, but external noise, crosstalk, etc. are more likely to occur.