Rainbow-electronics ADC1038 Manual do Utilizador Página 1

TL/H/10556ADC1031/ADC1034/ADC1038 10-Bit Serial I/O A/D Converterswith Analog Multiplexer and Track/Hold FunctionJanuary 1995ADC1031/ADC1034/ADC1038 1

1.0 Pin DescriptionsCCLKThe clock applied to this input controls the suc-cessive approximation conversion time interval.The clock frequency applied to

2.0 Functional Description (Continued)occur there will be an uncertainty as to which SCLKrisingedge will clock in the first bit of data. CSmust remain

3.0 Analog Considerations (Continued)External Reference 2.5V Full ScaleTL/H/10556– 20Power Supply as ReferenceTL/H/10556– 21Input Not Referred to GNDT

Protecting the Analog InputsTL/H/10556– 25TL/H/10556– 26Diodes are IN914Zero-Shift and Span-Adjust (2VsVINs4.5V)TL/H/10556– 27*1% resistors13

14

Physical Dimensions inches (millimeters)Order Number ADC1034CMJNS Package Number J16AOrder Number ADC1038CMJNS Package Number J20A15

Physical Dimensions inches (millimeters) (Continued)Order Number ADC1034CIWMNS Package Number M16BOrder Number ADC1038CIWMNS Package Number M20B16

Physical Dimensions inches (millimeters) (Continued)Order Number ADC1031CINNS Package Number N08EOrder Number ADC1034CINNS Package Number N16E17

ADC1031/ADC1034/ADC1038 10-Bit Serial I/O A/D Converterswith Analog Multiplexer and Track/Hold FunctionPhysical Dimensions inches (millimeters) (Conti

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

Electrical Characteristics (Continued)The following specifications apply for VCCea5.0V, VREFea4.6V, fSe700 kHz, and fCe3 MHz unless otherwisespecified

Electrical Characteristics (Continued)The following specifications apply for VCCea5.0V, VREFea4.6V, fSe700 kHz, and fCe3 MHz unless otherwisespecified

Typical Performance Characteristics(ICC)vsCCLKPower Supply Currentvs Ambient TemperaturePower Supply Current (ICC)vs Ambient TemperatureReference Curr

Test Circuitst1H,t0HTL/H/10556– 6DO except ‘‘TRI-STATE’’TL/H/10556– 7Leakage CurrentTL/H/10556– 8Timing DiagramsDO High to Low StateTL/H/10556– 9DO Lo

Timing Diagrams (Continued)ADC1031 CSHigh during ConversionTL/H/10556– 14ADC1038/ADC1034 CS High during ConversionTL/H/10556– 15CCLKcontinuously enabl

Timing Diagrams (Continued)ADC1038/ADC1034 CSLow ContinuouslyTL/H/10556– 16CCLKcontinuously enabledMultiplexer Address/Channel Assignment TablesADC103

ADC1038 Functional Block DiagramTL/H/10556– 179