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DEEPAK V

JTAG SMT2 Bypass cap and power sequencing requirment

Question

Hi,

Q1. The supply voltage 'VDD=3.3V and VREF=2.5V' is being used. Is there any specific power sequencing requirement for VDD and VREF?

Q2.Is it necessary to have bypass capacitor to VDD and VREF? OR is it provided inside the jtagsmt2 module? If not what is the recommended bypass cap value?

 

Thanks and Regards
DEEPAK

 

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3 answers to this question

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Hello,

The engineer let me know that it is probably better to power VDD first, but they have not experienced any issues when VREF was powered first instead. As for the second question, the module has bypass capacitors on each rail, so no external bypass capacitors are needed.

Thanks,
JColvin

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Hi @DEEPAK V,

I apologize for the delay; the engineer best suited to answer your questions is out of the office so it will be a couple of days before I can get a response to you.

Thank you,
JColvin

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