TMP235: About TMP235 Output cap load

Vera Mao

Part Number: TMP235

hi dear supporting team,

in TMP235 D/S, there is a requirement of total cap load lower than 1000pF, currently customer is using a RC with 1kOhm and 10nF , will it be a problem? tks!

over 5 years ago

0 Jalen Tate89 over 5 years ago

TI__Genius 9675 points

HI Vera,

The drive capability of the TMP235 is limited to 1000 pF because of the current limitations of the output driver of the device. Forcing the device to drive higher current loads could result in self-heating due to current and could alter the accuracy of the temperature sensor.

For driving a load greater than 1000pF, you can use the recommended resistor values from the table below. These resistors are recommended with specified load values in order to maintain the stability of the output.

If you are using a 10nF cap I recommend a 3kOhm series resistor.

Jalen

0 Vera Mao over 5 years ago in reply to Jalen Tate89

TI__Expert 5065 points

Hi Jalen,

thank you very much! so if the cap is inside 1000pF, could customer use any resistor value according to their filter BW requirement? tks a lot!

0 Jalen Tate89 over 5 years ago in reply to Vera Mao

TI__Genius 9675 points

Vera,

Yes that is safe to do.

Jalen

0 Vera Mao over 5 years ago in reply to Jalen Tate89

TI__Expert 5065 points

Hi Jalen,

Thanks for your reply!

Is it possible to update the d/s with the table you shown? Or could you pls help attach the original file which it is from? Customer will need update their system with the information. Tks!

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TMP235: About TMP235 Output cap load