Raspberry Pi 3 AD9850 based RF signal gen

[ultrarunner2018]

Hi;
I want to build an inexpensive RF signal generator using my Raspberry Pi 3 b+ to program an AD9850.
I need a 50 ohm output capable of driving coaxial transmission line.
Can someone recommend an op-amp for this?
I can't really say how what voltage swing I need on the output, but +/- 5V should be enough.
I have a bench supply capable of + and - 20V.

I am hoping to build this little generator for significantly less than what I could buy a comparable generator. I am aware of several function generators available bran-new and free standing for under $100, but I don't want to spend even $50 on this.

Thanks for your help
Ultrarunner

[ebclr]

FOR USD 99 you can buy a ready product, that is quite useful and will save your time

https://www.mouser.com/ProductDetail/Analog-Devices/ADALM-PLUTO?qs=sGAEpiMZZMuqBwn8WqcFUicxGcgINWaRWwjTXaJRopHnbkBAEzXakQ%3d%3d

[Fungus]

An Arduino would be much cheaper/easier than a Pi.

[Mechatrommer]

Can someone recommend an op-amp for this?
I can't really say how what voltage swing I need on the output, but +/- 5V should be enough.
I have a bench supply capable of + and - 20V.

THS3091 or THS3095. i used it to amplify my Hantek 3x25 AWG from ±5V to ±12V (from ±15V supply) or ±10V (from ±12V supply). you need to heatsink it as CFB opamp will sucks current and generates heat.