Rainbow-electronics ADC10738 Manual do Utilizador Página 1

TL/H/11390ADC10731/ADC10732/ADC10734/ADC10738 10-Bit Plus Sign Serial I/OA/D Converters with Mux, Sample/Hold and ReferenceDecember 1994ADC10731/ADC10

Leakage Current Test CircuitTL/H/11390–9Typical Performance Characteristicsvs TemperatureAnalog Supply Current (IAa)vs Clock FrequencyAnalog Supply Cu

Typical Performance Characteristics (Continued)vs Clock FrequencyLinearity Errorvs Reference VoltageLinearity Errorvs TemperatureLinearity Errorvs Inp

TRI-STATE Test Circuits and WaveformsTL/H/11390–10TL/H/11390–11TL/H/11390–12TL/H/11390–13Timing DiagramsTL/H/11390–14FIGURE 2. DI TimingTL/H/11390–15F

Timing Diagrams (Continued)TL/H/11390–16FIGURE 4. Delayed DO TimingTL/H/11390–17FIGURE 5. Hardware Power Up/Down SequenceTL/H/11390–18FIGURE 6. Softwa

Timing Diagrams (Continued)TL/H/11390–19Note: If CS is low during power up of the power supply voltages (AVaand DVa) then CS needs to go high for tCS(

Timing Diagrams (Continued)TL/H/11390–20FIGURE 8. ADC10732, ADC10734 and ADC10738 CS Low during ConversionNote: If CS is low during power up of the po

Timing Diagrams (Continued)TL/H/11390–21FIGURE 9. ADC10731 Using CS to Delay Output of Data afer a Conversion has CompletedNote: If CS is low during p

Timing Diagrams (Continued)TL/H/11390–22FIGURE 10. ADC10732, ADC10734 and ADC10738 Using CS to Delay Output of Data after a Conversion has CompletedNo

TABLE I. ADC10738 Multiplexer Address AssignmentMUX Address Channel NumberMODEMUXMA0 MA1 MA2 MA3 MA4CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 COMPUSING/ ODD/SEL

Pin DescriptionsCLK The clock applied to this input controls the suc-cessive approximation conversion time interval,the acquisition time and the rate

Connection Diagrams for Dual-In-Line and SO PackagesTL/H/11390–2Top ViewSee NS Package Number N16E or M16BTL/H/11390–3Top ViewSee NS Package Number N2

Applications HintsThe ADC10731/2/4/8 use successive approximation todigitize an analog input voltage. The DAC portion of the A/Dconverters uses a capa

Applications Hints (Continued)TL/H/11390–28FIGURE 11. Detailed Diagram of the ADC10738 DAC and Analog Multiplexer Stages21

Applications Hints (Continued)3.0 APPLICATIONS INFORMATION3.1 Multiplexer ConfigurationThe design of these converters utilizes a sampled-datacomparato

Applications Hints (Continued)4 Single-Ended 2 Differential4 Psuedo-Differential2 Single-Endedand 1 DifferentialTL/H/11390–27FIGURE 12. Analog Input M

Applications Hints (Continued)3.4 Optional Adjustments3.4.1 Zero ErrorThe zero error of the A/D converter relates to the locationof the first riser of

Applications Hints (Continued)(R1aR2)//R3s1kTL/H/11390–31Note 1: Diodes are 1N914.Note 2: The protection diodes should be able to withstand the output

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Physical Dimensions inches (millimeters)Order Number ADC10731CIWMNS Package Number M16BOrder Number ADC10732CIWM and ADC10734CIWMNS Package Number M20

Physical Dimensions inches (millimeters) (Continued)Order Number ADC10738CIWMNS Package Number M24BOrder Number ADC10734CIMSANS Package Number MSA2028

Physical Dimensions inches (millimeters) (Continued)Order Number ADC10731CINNS Package Number N16EOrder Number ADC10732CIN and ADC10734CINNS Package N

Absolute Maximum Ratings (Notes1&3)If Military/Aerospace specified devices are required,please contact the National Semiconductor SalesOffice/Dist

ADC10731/ADC10732/ADC10734/ADC10738 10-Bit Plus Sign Serial I/OA/D Converters with Mux, Sample/Hold and ReferencePhysical Dimensions inches (millimete

Electrical Characteristics (Continued)The following specifications apply for VaeAVaeDVaea5.0 VDC,VREFae2.5 VDC,VREFbeGND, VINbe2.5V forSigned Characte

Electrical Characteristics (Continued)The following specifications apply for VaeAVaeDVaea5.0 VDC,VREFae2.5 VDC,VREFbeGND, VINbe2.5V forSigned Characte

Electrical Characteristics (Continued)The following specifications apply for VaeAVaeDVaea5.0 VDC,VREFae2.5 VDC,VREFbeGND, VINbe2.5V forSigned Characte

Electrical Characteristics (Continued)The following specifications apply for VaeAVaeDVaea5.0 VDC,VREFae2.5 VDC,VREFbeGND, VINbe2.5V forSigned Characte

Electrical Characteristics (Continued)Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.Note 2: Operating R

Electrical Characteristics (Continued)TL/H/11390–8FIGURE 1A. Transter CharacteristicTL/H/11390–26FIGURE 1B. Simplified Error Curve vs Output Code9