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ADS5463-SP: Power dissipation at 100MSPS

Kazuhiko Hirano
Genius 13988 points
Part Number: ADS5463-SP

Hello,

The datasheet specifies ADS5463-SP power dissipation is 2.45W(max) at Vin=full scale, fin=300MHz and Fs=500MSPS. My customer plans to use ADS5463-SP at 100MSPS. How much would the power dissipation be?

Best regards,

K.Hirano

  • 0
    TI__Intellectual 2280 points

    Hi Hirano-san,

    Using our ADS5463EVM-CVAL, I applied a 100 MSPS clock and 301 MHz input driven to -0.95 dBFs. The power supplies current were as follows:

    5V AVDD: 290.6 mA

    3.3V AVDD:133.2 mA

    3.3V DVDD: 80.4 mA

    This is roughly 2.158 W

    Best regards,

    Drew

  • 0 in reply to Drew Harrell
    TI__Genius 13988 points

    Drew,

    Thank you for your response.
    I am sorry, here is one more measurement request from my customer.
    Could you measure the power dissipation at the following condition, please?

    100 MSPS clock and 10.23MHz input driven to +0.3dBm

    best regards,

    K.Hirano

  • 0 in reply to Kazuhiko Hirano
    TI__Intellectual 2280 points

    Hi Hirano-san,

    Here are the results from the above condition:

    5V AVDD: 291 mA

    3.3V AVDD:133.3 mA

    3.3V DVDD: 80.4 mA

    This is roughly 2.16 W

    Best regards,

    Drew