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LMX2595: Variation in power level with Temperature

MADIWALESH PATTAR
Prodigy 230 points
Part Number: LMX2595

We are using LMX2595 at high frequencies 14, 16, 18, 20 GHz. as per Graph variation in power level with temperature is high

at 14 GHz variation is 3 dB over Temp

at 16 GHz variation is 4 dB over Temp

at 18 GHz variation is 4 dB over Temp

at 20 GHz variation is 6 dB over Temp

Can you recommend ways to make variation less sensitive to temperature i.e keep variation +/- 1dB 

  • 0
    TI__Guru** 107780 points

    Hi Madiwalesh,

    I think this is the behavior of the chip, there is no way we can do to make the variation smaller.

    However, we can dynamically change the output power setting (OUTx_PWR) to make the variation looks smaller.

    Create a lookup table of OUTx_PWR vs temperature in your software so that you can adjust the output power setting according to the current temperature.