I'm designing a circuit that needs three different clocks at the same time:
28.3 Mhz 17.7 Mhz 14.3 Mhz
As you can see, none is a multiple of the other, so a PLL won't really help me. I'm currently at one 74HCU04 with the respective crystals and caps as an oscillator, costing about 1.10 EUR in production for all three clocks. For this kind of money, (roughly $1.30) I think I can have something more sophisticated than the discrete oscillators, maybe with some spread-spectrum for EMI control.
My FPGA has 3.3V, 5V-tolerant IOs.
Ideas, anyone? Maybe something programmable? I need more than 1200 units, and I have about five weeks time before I need the quantity.
thanks, -- Jens Sch�nfeld
-- Author: Jens =?iso-8859-1?Q?Sch=F6nfeld?= INET: [EMAIL PROTECTED]
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