ADS54J54: Current Consumption in each supply pins vs Sampling Frequency

Hiroshi Katsunaga

Part Number: ADS54J54

Hello,

My customer has a request about ADS54J54.

[Request]

Do you have the data of the current consumption in each supply pins vs sampling frequency such as Figure 26 in the D/S ?

Best Regards,

Hiroshi Katsunaga

over 8 years ago

0 Ken C over 8 years ago

TI__Genius 12965 points

Hi Hiroshi,

We will look into this and get back with you soon.

Ken.

0 Hiroshi Katsunaga over 8 years ago in reply to Ken C

Mastermind 6480 points

Hi Ken,

Thank you for your fast response.
Okay, I will wait your feed it back.

Thank you for your cooperation.

Best Regards,
Hiroshi Katsunaga

0 Richard Prentice over 8 years ago in reply to Hiroshi Katsunaga

TI__Mastermind 29220 points

Hi,

I looked through the datasheet at what information is there, and for current draw over frequency I only have the information that is presented in the datasheet. The power consumption over frequency in that table is not broken out by supply.

Regards,

Richard P.

0 Hiroshi Katsunaga over 8 years ago in reply to Richard Prentice

Mastermind 6480 points

Hi Richard,

Thank you for your response.

OK, I understood that you have not data other than the D/S.

I have an other question.

[Q]

Which power supply pins do the current consumption charge by frequency ?

I think analog supply pins don't change by frequency because they may work in the constant current source.

Best Regards,

Hiroshi Katsunaga

0 Richard Prentice over 8 years ago in reply to Hiroshi Katsunaga

TI__Mastermind 29220 points

Hi,

since I do not have access to the characterization data, I cannot say for sure but I would agree with your suggestion. On prior designs that were done in bipolar processes the analog portion of the design was often done with current steering logic, so the amount of current was about constant regardless of the data or the sample frequency. I would expect it to be the digital logic that would have the current consumption affected by sample frequency.

Regards,

Richard P.

0 Hiroshi Katsunaga over 8 years ago in reply to Richard Prentice

Mastermind 6480 points

Hi Richard,

Thank you for your fast response.
OK, I understood your comments.
Thank you for your cooperation.

Best Regards,
Hiroshi Katsuanga

Data converters

Data converters forum

ADS54J54: Current Consumption in each supply pins vs Sampling Frequency