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
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