I am using ADRF6516 in ultrasonic time gain control, signal filter. The performance is wonderful, but the the temperature is so high.
This part consumes too high power, from the spec, maximum power consumption is 1.25W and the thermal resistance is
37.4°C/W. The maximum operation temperature is 37.4°C.
So the maximum allowed Ambient temperature is 85-1.25*37.4=38°C
The ambient temperature we need is at least 65°C, without fan.
I am not familiar with the thermal, is there any good solution for thermal? adding large thermal heatsink or any other ways?.
Or are there other low power parts with VGA and programmable filter?