[time-nuts] Frequency multiplication

[Magnus Danielson]

On 04/02/11 22:50, Rex wrote:
> On 2/4/2011 1:18 PM, Magnus Danielson wrote:
>> Just avoid falling into the charge-pump tar-pit...
>>
>> Cheers,
>> Magnus
>>
>
> Curious what you mean by that?

If you have the combination of a charge-pump with a dead-band (such as 
4046) and a too low comparator frequency... you can get fairly long 
periods of quite followed by correction spikes. Not nice.

There are good charge-pumps and good uses of them. But I avoid them like 
plague. There is usually simpler alternatives available.

Cheers,
Magnus