Applications Information (Continued)
DS005672-26
FIGURE 12. Typical Reference and Supply Circuit
DS005672-27
=
RA RB
*
Ratiometric transducers
FIGURE 13. Symmetrically Centered Reference
3.0 CONVERTER EQUATIONS
The output code N for an arbitrary input are the integers
within the range:
The transition between adjacent codes N and N+1 is given
by:
(4)
=
Where: VIN Voltage at comparator input
(2)
=
VREF(+) Voltage at Ref(+)
The center of an output code N is given by:
=
VREF(−) Voltage at Ref(−)
=
VTUE Total unadjusted error voltage (typically
÷
VREF(+) 512)
(3)
11
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