Hi,

I am wiring opamp in differential configuration . The non inverting pin has a divider 40K by 10K referenced to GND and the signal reference of 10V is to be aplied to one end of 40K resistor. My question is should this reference of 10V(REF01) require any buffering ?

Thanks

 

Post a schematic. Also describe the reference voltage generator, and post a schematic of it if possible.

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Here is the schematic. Does the reference IC requires a buffer?

Attached Thumbnails

 

 

I don't know what the IC is, but 50K is alot of resistance, so I'm going to say that a buffer is not required.

__________________
You don't need a quadraphonic Blaupunkt -- you need a curve
ball.

 

In my first post I say the number REF01 .

Thanks

 

No buffer required.

__________________
You don't need a quadraphonic Blaupunkt -- you need a curve
ball.

 

Thanks , can you help me with how/what to look for in the REF01 specs . It doesnt says how much load can it drive?

 

There is a spec for load regulation, given in ppm for 0 - 10 mA

__________________
You don't need a quadraphonic Blaupunkt -- you need a curve
ball.

 

I am sorry I checked it again and again http://www.analog.com/static/importe...eets/REF01.pdf but couldnt locate the said spec in ppm , but ony a work case regulation of 0.012%/V for REF01H on page 3 .

 

It's given in %/mA on page 3.

__________________
You don't need a quadraphonic Blaupunkt -- you need a curve
ball.

 

Thanks for the help , that was a typo on my behalf "%/V" .