TJA1100 pin4&16 ; C26 & C28

[jerrry]

Hi community .

I have a question about the TJA1100. Im searching for the use of the two capacitors C26 & C28 shown in the schematic at the end of TR1329.pdf. I ooked up TJA1100.pdf too, but didn't get any answer. It's about the pins 4 & 16. These two pins are for the VDDA(1V8) and VDDD(1V8) and are generated by LDO internally. So what are the two capacitors  C26 & C28 shown in TR1329.pdf for?

Am I right with my guess that they are just for stabilization? 

If you have any other helpfull documents refered to the TJA1100 please let me now.

Thanks in advance.

Jerrry

[TomasVaverka · Accepted solution]

Hi Jerome,

Those capacitors are needed for external buffering of the LDO to stabilize the voltage.

Attached you can find the application hints for TJA1100 for your reference.

Best regards,

Tomas

PS: If this answer helps to solve your question, please mark it as "Correct". Thank you.

[jerrry]

Hi Tomas,

thank you for your response and your attachment.

This helps me alot.

Best regards,

Jérôme