Rainbow-electronics ADC0809 Manual do Utilizador

ADC0808/ADC08098-Bit µP Compatible A/D Converters with 8-ChannelMultiplexerGeneral DescriptionThe ADC0808, ADC0809 data acquisition component is amono

Applications Information (Continued)DS005672-24FIGURE 10. Ground ReferencedConversion System Using Trimmed SupplyDS005672-25FIGURE 11. Ground Referenc

Applications Information (Continued)3.0 CONVERTER EQUATIONSThe transition between adjacent codes N and N+1 is givenby:(2)The center of an output code

Applications Information (Continued)4.0 ANALOG COMPARATOR INPUTSThe dynamic comparator input current is caused by the pe-riodic switching of on-chip s

Physical Dimensions inches (millimeters) unless otherwise notedCeramic Dual-In-Line Package (J)Order Number ADC0808CCJ or ADC0808CJNS Package Number J

Physical Dimensions inches (millimeters) unless otherwise noted (Continued)LIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITIC

Block DiagramDS005672-1See OrderingInformationwww.national.com 2

Absolute Maximum Ratings (Notes 1,2)If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distri

Electrical Characteristics (Continued)Digital Levels and DC Specifications: ADC0808CJ 4.5V≤VCC≤5.5V, −55˚C≤TA≤+125˚C unless otherwise notedADC0808CCJ,

Functional DescriptionMultiplexer. The device contains an 8-channel single-endedanalog signal multiplexer. A particular input channel is se-lected by

Functional Description (Continued)DS005672-2FIGURE 1. Resistor Ladder and Switch TreeDS005672-13FIGURE 2. 3-Bit A/D Transfer CurveDS005672-14FIGURE 3.

Connection DiagramsTiming DiagramDual-In-Line PackageDS005672-11Order Number ADC0808CCN, ADC0809CCN,ADC0808CCJ or ADC0808CJSee NS Package J28A or N28A

Typical Performance CharacteristicsTRI-STATE Test Circuits and Timing DiagramsApplications InformationOPERATION1.0 RATIOMETRIC CONVERSIONThe ADC0808,

Applications Information (Continued)suitable for measuring proportional relationships; however,many types of measurements must be referred to an abso-