SRC4190: Power dissipation at fsout = 48kHz

Shoo Saga

Intellectual 1931 points

Part Number: SRC4190

Hello team,

My customer wants to know specification of this device.

Do you have any data of power dissipation at fsout = 48kHz ?

Thanks,

Shoo

over 1 year ago

0 Arash Loloee over 1 year ago

TI__Mastermind 23920 points

Hi Shoo, whatever is in datasheet, is all we have. From datasheet the dissipation only for 192kHz.to be 225mW, no information for 48KHz.

Regards,

Arash

0 Shoo Saga over 1 year ago in reply to Arash Loloee

TI__Intellectual 1931 points

Hi Arash,

Can't we estimate by calculation?

Thanks,

Shoo

+1 Arash Loloee over 1 year ago in reply to Shoo Saga

TI__Mastermind 23920 points

Hi Shoo,

Problem is that we have the power dissipation that is the sum of different blocks in the chip. We don't know the structure of components of these blocks and thus changing the sampling frequency may or may not effect a specific block. But for first order approximation dynamic power changes linearly with frequency ( P=1/2CfV^2)

Regards,

Arash

0 Shoo Saga over 1 year ago in reply to Arash Loloee

TI__Intellectual 1931 points

Hi Arash,

Got it. Thank you for your reply.

Thanks,

Shoo

0 Arash Loloee over 1 year ago in reply to Shoo Saga

TI__Mastermind 23920 points

my pleasure.

Arash

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SRC4190: Power dissipation at fsout = 48kHz