A/D Reference Voltage Question

T

Thomas Roberts

Guest
Typically, when dealing with common A/D converters (10 bit) can the AD
Reference Voltage exceed the IC's supply voltage? Specifically, if the IC is
powered via +5vdc, can the AD Ref Voltage be supplied with +24vdc as a basis
for comparison?


Respectfully,

Thomas Roberts
 
Typically, when dealing with common A/D converters (10 bit) can the AD
Reference Voltage exceed the IC's supply voltage? Specifically, if the IC is
powered via +5vdc, can the AD Ref Voltage be supplied with +24vdc as a basis
for comparison?
In the cases I know: no.

But it would of course make more sense if you mentioned the chip you
are referring to, or maybe even read the datasheet yourself?

But why not divide both the reference and the A/D input down to within
the 0..Vcc range?


Wouter van Ooijen

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