ADC0808-N, ADC0809-N

SNAS535H – OCTOBER 1999 – REVISED MARCH 2013

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Figure 14. Typical Reference and Supply Circuit

RA=RB

*Ratiometric transducers

Figure 15. Symmetrically Centered Reference

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:

Where:

•

VIN=Voltage at comparator input

•

VREF(+)=Voltage at Ref(+)

•

VREF(−)=Voltage at Ref(−)

•

VTUE=Total unadjusted error voltage (typically

•

VREF(+)÷512)

(4)

12

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