[time-nuts] Simple PLL chips, gone ?

jimlux jimlux at earthlink.net
Tue May 4 13:01:57 UTC 2010

Luis Cupido wrote:
> Hi,
> I'm looking for a relatively simple PLL chip
> like LMX1501 or similar.
> I mean, looking for a new design, that is something
> that is easy to source (known to be in production etc)
> recent/modern enough to provide a low phase noise.
> Is for VHF/UHF below 500MHz application and will
> be for MHz steps (no small steps required).
> Albeit reasonably low phase noise will be wanted.
> What seems to be available from An.Dev. and Nat.Sem.
> are way too unnecessarily complex and I would like
> it to not have a zilion registers to load via spi.
> (might use just a small corner of a CPLD to load it).
> Are the simple ones gone obsolete, or simple no longer in the
> web pages ???
> ok... I think you got the idea...
> I'm looking for the basic think...
> Any suggestions of what might be usable/available.

How about the Peregrine 9701?  Pretty low noise, simple (20 bit serial 
word to load).. Max reference divider is 63 or 64.

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