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ADC0808 View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
ADC0808 8-Bit µP Compatible A/D Converters with 8-Channel Multiplexer National-Semiconductor
National ->Texas Instruments National-Semiconductor
ADC0808 Datasheet PDF : 14 Pages
First Prev 11 12 13 14
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 transition between adjacent codes N and N+1 is given
by:
The output code N for an arbitrary input are the integers
within the range:
The center of an output code N is given by:
(4)
(2)
Where: VIN=Voltage at comparator input
VREF(+)=Voltage at Ref(+)
VREF(−)=Voltage at Ref(−)
VTUE=Total unadjusted error voltage (typically
VREF(+)÷512)
(3)
11
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