请问:TLV320AIC3268的ADC转换后的数据格式是什么样的?

我在使用TLV320AIC3268,但是不知道ADC转换后的数据格式是什么样的?比如是二进制补码吗?转后的数据与输入的模拟信号的电压值有什么关系?

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  • ni您好,以下是产品工程师的回复,请查看。另外,由于春节假期,如您有进一步的问题,建议您在这个帖子:https://e2e.ti.com/support/audio/f/6/p/874643/3236489中与工程师继续沟通,谢谢您的配合。

    The output data format of the ADC is two's complement.

    The relationship between the input voltage and converted data depends on channel gain and common mode setting.

    Assuming the gain of the channel is set at 0 dB (i.e. no gain in the path) with 0.75V common mode voltage setting, a single ended input of .375 Vrms (peak voltage = sqrt(2)*.375 = 0.53), result in a full-scale digital output. Signals above 0.375 Vrms get clipped.

    Using 0.9V common mode voltage settings, an input of 0.5Vrms gets converted to full-scale digital output.

    The channel output will also scale with channel gain. Using a 6 dB channel gain with 0.9V common mode, a 0.25 Vrms input converts to a full-scale digital output.