[sdiy] Buffered opamp used as a 2Mhz power amp...

[Roman Sowa]

To have 5W sine on 50 ohm you need +/-24V supply.
But for +/-15V amplifier I'd go for LTC1206 and no external push-pull stage.

If it's only 2MHz and nothing else, you may try to excite LC circuit 
with short pulses at 2MHz frequency, like radio transmitters were made 
in the old days. The sine will be clean, probably even leaner than with 
an opamp.

Roman

W dniu 2014-08-20 15:59, Jean-Pierre Desrochers pisze:
> This is out of 'usual' topics for synth DIY forum but
> some of you guys could have some clues about it..
>
> I want to build a small power amp (5-10w @ +/- 15vdc) that
> could drive a 50 ohms load with a fixed 2Mhz pure sine.
> I'd like to use an opamp driving a push-pull stage (ex: using TIP29-30)
> What type of opamp could be used at that frequency ?
> The input level would be around 1vpp.
> I was thinking of NE5532 as a frontend..
>
> Thanks..
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