TDA4VH-Q1: ADC sampling speed

Xingyu Zhu

Part Number: TDA4VH-Q1

Dear expert,

TDA4 has 8 ADC sampling pins. Customer would like to know if the SoC read the voltage value one by one (polling)? If polling is used, what is the polling time? Thanks

Best Regards,

Xingyu Zhu

over 2 years ago

0 Kevin Lavery over 2 years ago

TI__Mastermind 21210 points

Xingyu,

You setup a set of conversions which includes the channels to be converted and then start the conversion. The ADC converts the channels sequentially.

Kevin

0 Xingyu Zhu over 2 years ago in reply to Kevin Lavery

TI__Expert 4335 points

Hi Kevin,

Thanks for your reply. Customer is checking the speed of ADC. Do we have the data of the time interval between 2 adjacent channel conversion? What is the approximate time scale?

+1 Kevin Lavery over 2 years ago in reply to Xingyu Zhu

TI__Mastermind 21210 points

Xingyu,

The ADC clock is supposed to be configured to 60 MHz. Every sample time is 2 cycles + user-defined delay. The conversion itself takes 12 cycles. There is probably a start cycle and an end cycle.

Kevin

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TDA4VH-Q1: ADC sampling speed