AM3354: AM3354 4 Wires ADC sample frequency

Shuang Feng76

Expert 3310 points

Part Number: AM3354

Hi Team,

How about the default sampling frequency of our AM3354?

It is 4 wires setting TSC_ADC. there is only max value in datasheet.

how about he default value?

over 2 years ago

0 Kallikuppa Sreenivasa over 2 years ago

TI__Guru**** 189419 points

Hello Shuang Feng76

Thank you for the query.

I don't understand the issue. You may need to provide a better explanation of the problem.

The below link could help.

https://processors.wiki.ti.com/index.php/StarterWare_TouchScreen

I would expect some configurations to be done for the ADC to work at max frequency or any other sampling rate.

Please refer to the TRM

Chapter 12, Touchscreen Controller

Regards,

Sreenivasa

0 Kallikuppa Sreenivasa over 2 years ago in reply to Kallikuppa Sreenivasa

TI__Guru**** 189419 points

Hello Shuang Feng76

I have a follow-up question.

I am trying to understand the application requirement. Could you please help us understand if you looking to configure the ADC for TSC application or as an ADC- for sampling analog inputs.

FYI, Maximum ADC sampling can be achieved when a 24MHz crystal is used.

Regards,

Sreenivasa

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AM3354: AM3354 4 Wires ADC sample frequency