On Tue, Jul 9, 2013 at 11:59 PM, Yigit Turgut <y.turgut@gmail.com> wrote:
> Hi all,
>
> I am generating a PWM signal with an xmos (gpio) device. Signal has
> following characteristics ;
>
> Frequency ; 50 MHz
> duty cycle ; %50
> rise/fall times ; ~sub-ns
> Amplitude ; 3.3v or TTL (I can choose)
>
> it's all fine but I need a max amplitude of 10-11 volts. Actually we are
> not sure exactly the required voltage range thus I am planning to do it
> adjustable between 5V-12V.
>
> I obviously need a very fast transistor but haven't been on the analog
> stage for a long time. I think a well chosen rf-transistor might do the
> trick.
>
> Any suggestions or references ?


A BF494 should work. I guess it is available still

Regards,

Manu
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