Analog signal Fanout Buffer

[shaiko]

I need to duplicate a fast (~2GHz) analog signal to 2 channels.
To avoid signal integrity issue I won't to avoid "star-topology" and use an analog 1:2 fanout buffer instead.

1. What do you think about the solution ?
2. Please advice an appropriate IC.

 

[barry]

There a number of opamps that can handle 2GHz, e.g. TI THS4304. You could just use two of these configured as voltage followers.

 

[shaiko]

Thanks barry.
Can you please post a small schematic? I don't really understand what you mean.

 

[FvM]

Can you please post a small schematic? I don't really understand what you mean.

What's unclear, the term voltage follower? You'll find plenty of buffer applications e.g. in OP data sheet.

The initial post is however missing many details:
- signal voltage range
- DC or AC coupled?
- expected/required impedance matching
- acceptable gain/phase/waveform error