Rainbow Electronics ADC0809 - Manual (Page 11)

Applications Information
(Continued)
3.0 CONVERTER EQUATIONS
The transition between adjacent codes N and N+1 is given
by:
(2)
The center of an output code N is given by:
(3)
The output code N for an arbitrary input are the integers
within the range:
(4)
where: V
IN
=Voltage at comparator input
V
REF(+)
=Voltage at Ref(+)
V
REF(−)
=Voltage at Ref(−)
V
TUE
=Total unadjusted error voltage (typically
V
REF(+)
÷ 512)
DS005672-26
FIGURE 12. Typical Reference and Supply Circuit
DS005672-27
R A =R B
* Ratiometric transducers
FIGURE 13. Symmetrically Centered Reference
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