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cipry21

Cuart 3,2 Mhz de unde?

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Nu gasesc acest cuart de 3,2 Mhz imi trebuie exact pe acesta frecventa. De 3,27 Mhz nu este bun.Sau poate aveti voi ar fi super ok.

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Unul de 32MHz divizat cu 10 nu te ajută? Nu cred că o să găseşti prea uşor unul de 3,2MHz. Ce aplicaţie îl foloseşte?

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la un pll il folosesc si imi trebuie exact 3,2 Mhz. da pot asa sa folosesc si 6,4 Mhz divizat cu 2 dar ideal ar fi 3,2. poate are cineva.

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Mai curand gasesti de 32MHz si faci divizare cu 10.

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pentru divizare cu 2 am schema

 

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dar cu 10 cum fac?

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nu inteleg cum fac cu cuart de 32 Mhz la schema de mai sus sa am la iesire 3,2 Mhz.

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sunt putin nedumerit pot sa inlocuiesc in schema sa pun cd4017 in loc de 4040 iar acolo sa pun cuart de 32 Mhz ? iar la cd4017 vad pe care iesire s1 , s2 , s3 , ... am frecventa de 3,2 Mhz este bine ce zic?

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Acel oscilator cu cuart pe care ti l-am recomandat este montajul insusi (cauta tcxo de 32 Mhz), deci nu mai ai ce face decat sa-l alimentezi la 5V (uita-te in datasheet si-i vezi pinii). Iesirea aia de 32 Mhz o introduci in diviz. cu 10 cu 4017 (S10 inchis).Sunt si eu la fel (ca o rata!). iti dau varianta cu 74hc390.

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Nu e bine, trimite-mi mail-ul tau prin pm.

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