You have not provided nearly enough information. What kind of a crystal were you thinking of? Why does an A/D clock hve to be crystal controlled? Do you want a discrete design using transistors, resistors, inductors and capacitors that will be TTL compatible, or do you want a design that uses TTL integrated circuits, or can we also use CMOS integrated circuits? You need to specify your requirements; we cannot help you without more information.Originally posted by sirish@Apr 16 2006, 11:37 AM
I want to design a Crystal Oscillator circuit for generating 640 khz that i can give as the i/p to the clock pin of adc0808.
Is the crystal oscillator output ttl compatible.
Plz let me know how to design the circuit.
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