ADS7263EVM - /CS pin voltage would not rise above 1.2V

Kawai

Guru 19785 points

Other Parts Discussed in Thread: ADS7263

Hello Team,

Could you please allow me to ask you the operation of ADS7263 ? Our customer is using the ADS7263EVM, trying to control /CS = High pulling up the pin to 3.3V through 100k Ohm resistor. However, /CS pin voltage would only rise to 1.2V and stays at this voltage. Does this pin have internal pull down, such like 50k Ohm ?

Best Regards,
Kawai

over 9 years ago

0 Jose Duenas over 9 years ago

TI__Genius 9975 points

Hello Kawai-san,

Could you please clarify to me whether your customer is using the ADS7263EVM by itself or whether they are connecting it to a motherboard?

Neither the EVM itself nor the IC have pull-down resistors; so I cannot explain the phenomenon you are observing.

Best regards,

Jose

0 Kawai over 9 years ago in reply to Jose Duenas

Guru 19785 points

Hello Jose-san,

Thank you for your support. We have been confirming our customer set-up connection and found that they had connected 3.3V to a wrong pin. It would be nice to have a test pin or easier access to the power pins.

Best Regards,
Kawai

0 Jose Duenas over 9 years ago in reply to Kawai

TI__Genius 9975 points

Hello Kawai-san,

Understood; thank you very much for clarifying the situation. I will close this post.

Please do not hesitate to open a new inquiry if your customer has further questions.

Best regards,

Jose

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ADS7263EVM - /CS pin voltage would not rise above 1.2V