clock for ADC7478

[eng.asr]

hello all,i want to generate clock for ADC with frequency of 500khz and actually a haven't an idea, can i use crystal oscillator to do? and how. thanks for any help.

 

[eng.asr]

please if any have an idea...i'll be thankful,,i need it as soon as possible.

 

[crutschow]

Any type of digital oscillator such as an RC (for example using a 555) or crystal designs will work. It depends upon the clock accuracy you require.

 

[eng.asr]

thanks for your reply, iwould ask another one : if i want to get negative 8 volt from a 12volt supply,,how?

 

[crutschow]

thanks for your reply, iwould ask another one : if i want to get negative 8 volt from a 12volt supply,,how?

You use a switching regulator. You can buy them as a module or build your own from parts (such as these **broken link removed**).