TLV320ADC6140: Audio Signal Input Channel Selection at 384kHz sampling rate

Koshi Ninomiya

Hi Team,

My customer is considering to use the TLV320ADC6140 as audio ADC with 384kHz sampling rate and differential audio signal input configuration. Under the 384kHz sampling rate, maximum audio signal input channel count is limited as 2 channels.

Can any 2 channels from Channel-1 to Channel-4 be used?
or
Are there two designed channels? Channel-1 and Channel-2?

Best Regards,

Koshi Ninomiya

over 6 years ago

0 PedroGelabert over 6 years ago

TI__Expert 6995 points

Koshi-san,

Any two channels can be used for 384kHz sample rate. As stated in the application note TLV320ADCx140 Sampling Rates and Programmable Processing Blocks Supported

Linear phase (DECI_FILT = 00) and ultra-low latency (DECI_FILT = 10) decimation filter responses are supported for the 384 kHz sample rate. AGC and DRE, bi-quads, channel summers, and digital mixer blocks are not supported for 384 kHz operation. A maximum of two channels are supported for 384 kHz and they can be analog, digital, or a combination of both.

Best regards,
Pedro

Audio

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TLV320ADC6140: Audio Signal Input Channel Selection at 384kHz sampling rate