cmos to 5v or 10v conversion

[amin5659]

hi all. I've a CMOS logic line(0 to 3.3v) and i want to scale this line to 0 to 10v or 0 to 5v. (user will choose the output voltage level).
the width of the pulse's is about 200 ns and maximum rise and fall time allowed is about 100 ns :|.
output impedance of this port must be 50 ohm.
can you help me out?
thanks

 

[KlausST]

Hi,

I´d use a CMOS analog switch with TTL or LVCMOS signal input levels.
Impedance may be adjusted with series resistors.
There are many different types.

Just use the selection guides at distributors and manufacturers.

Klaus

 

[amin5659]

thanks klausST
another important factor i forgot to mention is propagation delay.
the propagation delay have to be under 20ns. do you think switch's can provide this condition?

 

[KlausST]

Hi,

do you think switch's can provide this condition?

Nobody can know all spcifications of all available electronic parts, thus I recommended:

Just use the selection guides at distributors and manufacturers.

Use it. It is for free. You can´t loose anything.

Klaus

 

[dick_freebird]

Fast and high voltage are more of a "pick one" proposition.
Old CD4000 series level shifters are too slow and nowhere
near 50 ohms.

Seems to me you want a line driver with some gain before,
or a proper feedback if it's that kind of line driver. Maybe an
attenuator (where the variation goes) and a fixed gain
(like A=5?) line driver? If you want true and consistent 50
(as in +/- 5) ohms then forget any vanilla CMOS level
shifters, they swing wide w/ supply and temp.

 

[asdf44]

This overlaps with 'gate drive' applications such as:
TPS2829
https://www.ti.com/lit/ds/symlink/tps2819-ep.pdf

On a really quick look it doesn't quite hit your specs (propagation delay specifically). But its in the ballpark. Find that category on digikey and take another look.