HMC516LC5_Gain Vs Temperature

Question

Dear team, 
 According to the datasheet, this part is expressed as having lower gain at low temperature(-40˚C). 
 Is this correct? Could I know why? 
 In general, it is known that the Gain performance increase at low temperature. 
 
 Thank you. 
 Best & Regards, 
 Josh

Wes Harris · Accepted Answer

Hi Josh, 
 You're right that you would generally expect gain to be higher at lower temperatures. In this case, there is likely some kind of internal temperature compensation circuit that is causing the fold around +25C that we're seeing here. I took a look at both the packaged and die version of the part to verify that this characteristic is represented in both parts, so I feel fairly confident this is the case here.)

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HMC516LC5_Gain Vs Temperature