ADC and PROCESSOR Isolation

[Vahab]

adc isolation

Hi all,

I have problem with ISOLATION AMPLIFIER on biomedical systems,
In other word,
I want to know how i can Isolate ADC from Processor and where is the isolation block location???

I recorded biosignal with INSTRUMENTATION amplifier and feed to antialiasing filter and H.P.F., then I want to amplify finally signal with gain in about 100.after amplifying and improve SNR,I want to digitized it.BUT I DON'T KNOW HOW CAN I ISOLATED THIS BOX FROM ADC AND PROCESSOR>

Please help me.
I am confused.

Please help me,This project is my final project.
Help me.

Thanks in Advance.
Vahab

 

[cobol]

isolation adc

Hey man there are a anolog SUPPLY and DIGITAL SUPPLY and anolog GND and digital GND in all the A/DC. U use different supplies for Isolation

 

[Vahab]

Hi Cobol,


I know this,I have problem with with SUPPLY ISOLATION exactlly!!!
I know that we have different GNDs (Analog And Digital!!!),But i don't know about

"How can I isolate GNDs????"

Thanks for your reply,Please help me Cobol.

Thanks in Advance.
Vahab

 

[FvM]

Do you have any isolation amplifier? If so follow the manufacturers application notes. Otherwise, clarify your specifications (bandwidth, dynamic range, isolation requirements) first.

 

[Vahab]

Hi,

My isolation amplifier is AD202,but i couldn't find suitable APP.notes from Analog Device Company.

BW=5KHz

I have problem with ISOLATION CONCEPTS exactlly???