[hpsdr] Odyssey Siren Design

[Ahti Aintila]

Hi Nyall,

HMC174MS8 is obsoleted, the replacement is HMC574MS8. Those are
otherwise very interesting devices, but according to my understanding,
the specified rise and fall times are typically 80 ns that is too slow
for sampling purpose. We are looking for swithches preferably better
than 10 times faster for lower switching losses at high clocking
(sampling) speeds. Hittite switches are made for TX/RX changeover
applications.

BTW, where did you see the 10 ns specification?

73, Ahti OH2RZ

On 28/09/06, Nyall Davies <nyalldavies at ukonline.co.uk> wrote:
> HAVE YOU considered the HMC174MS8
> I am only observing emails and not taking too close a look at the detail but
> I found some of these on ebay while looking for something else. This is a DC
> to GHz changeover switch made by Hittite with an IP3 typical of 60dBm and
> 0.5dB loss, 10nS switching.
> It might be irrelevant for various reasons but I thought I would draw your
> attention to it.
>
> Nyall G8IBR
>
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