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AWR1843: Calculation for Case temperature

Part Number: AWR1843

Hi,

I'd like to calculate the case temperature.

Is it possible by using the parameter which are provided on DM ch5.9 Thermal Resistance Characteristics for FCBGA Package [ABL0161] (www.ti.com/.../awr1843.pdf)

Q1: Is a formula following?

Tc = Tj - (RθJC x Power consumption)

Q2: Is "power consumption" average or peak?

Thanks and Best regards,
HaTa.