[time-nuts] high rev isolation amps

Alex Pummer alex at pcscons.com
Sat Mar 26 17:06:40 EDT 2016


you may need to touch the solder iron, but it is worth it >60dB 
isolation MAXIM, MAX2470, made for VCO buffer ...
73
KJ6UHN
Alex

On 3/26/2016 10:57 AM, jimlux wrote:
> Consulting the time-nuts hive mind here..
>
> I'm looking for off the shelf connectorized amplifiers with very good 
> reverse isolation for doing things like intermod measurements (e.g. 2 
> signal generators followed by amps/pads into a combiner) and phase 
> noise measurements for a digital receiver.
>
> 1-100 MHz kind of frequency range..
>
> I've used ZFL-500LN (30dB gain, 27 dB directivity in the data sheet, 
> which I interpret as 57dB reverse) , ZX60-4016 (really more of a 
> microwave amp, and not so hot reverse wise.. 25 dB)
>
> I'm not particularly cost constrained, so a higher power amp (which 
> also reduces distortion products from the amp) followed by pads is 
> always an alternative.
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