[time-nuts] 10 MHz -> 16 MHz clock multiplier

[Magnus Danielson]

On 02/01/13 19:54, Tom Van Baak wrote:
> What's the simplest way to generate 16 MHz from 10 MHz? This will be for clocking a microcontroller at 16 MHz given 10 MHz (Cs/Rb/GPSDO). Low price and low parts count is a goal; jitter is not a concern but absolute long-term phase coherence is a must.
>
> The ICS525 (as in TAPR Clock-Block) is a good candidate but I was wondering if there's something cheaper, less functional, and maybe not SSOP. Any suggestions?

One approach is to divide by 5 to get 2 MHz, but recalling that the 20% 
PWM factor (top bit of divide by 5 counter) has a strong 8th overtone 
compared to the 40% PWM factor, an LC-tank at 16 MHz and a simple 
gain-stage (such as the Wenzel sine input) should be able to pull it 
off. The divide by 5 is standard TTL/CMOS of your choosing.

Cheers,
Magnus