how to use instrumentation amplifier AD620?

Thread Starter

ahmedzaidan

Joined Jul 22, 2017
39
Hi

i need to amplify a signal from (0-5mv) using AD620 to (0-3V)?
how can i determine the gain and the reference voltage ?

thanks in advanced :)
 

Thread Starter

ahmedzaidan

Joined Jul 22, 2017
39
so it is impossible to use single power supply !!o_O

is there other instrumentation amplifiers work with single power supply ?

i have tried v+=5,V-=-5 ,Vref=0.

it worked fine.. :)

i need to use microcontroller to read the the output of ad620 .
should i need to add other elements?or connect it directly?
 

ericgibbs

Joined Jan 29, 2010
18,766
hi a,
That is a half bridge, using passive resistors to make up the other half bridge into a full bridge, it is often configured in that way.

Do you have a AD623 or any regular OPA's that you could use for the amplifier.?

E
 

Thread Starter

ahmedzaidan

Joined Jul 22, 2017
39
hi a,
That is a half bridge, using passive resistors to make up the other half bridge into a full bridge, it is often configured in that way.

Do you have a AD623 or any regular OPA's that you could use for the amplifier.?

i have AD620,LM358,LM324 and 741 ..
i will buy AD623 if needed :)


E
 

Thread Starter

ahmedzaidan

Joined Jul 22, 2017
39
Hi ericgibbs,
thanks for your appreciated effort :)

can i build a dual power supply without using transformer and rectifier circuit ?

with single power supply it would be better to use ad623 instead of ad620+1m324?

^_^
 
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