Rainbow-electronics ADC12441 Manuel d'utilisateur

TL/H/11017ADC12441 Dynamically-Tested Self-Calibrating 12-BitPlus Sign A/D Converter with Sample-and-HoldNovember 1994ADC12441 Dynamically-Tested Self

1.0 Pin DescriptionsDVCC(28),The digital and analog positive power supplyAVCC(4)pins. The digital and analog power supplyvoltage range of the ADC12441

2.0 Functional Description (Continued)Digital Control InputsA/D FunctionCS WR RD CAL AZßß 1 1 1 Start Conversion without Auto-Zeroß 1 ß 1 1 Read Conve

3.0 Analog Considerations (Continued)For absolute accuracy, where the analog input varies be-tween very specific voltage limits, the reference pin can

4.0 Dynamic PerformanceMany applications require the A/D converter to digitize acsignals, but the standard dc integral and differential nonlin-earity

ADC12441 Dynamically-Tested Self-Calibrating 12-BitPlus Sign A/D Converter with Sample-and-HoldPhysical Dimensions inches (millimeters)Order Number AD

Absolute Maximum Ratings (Notes1&2)If Military/Aerospace specified devices are required,please contact the National Semiconductor SalesOffice/Dist

Converter Electrical CharacteristicsThe following specifications apply for VCCeDVCCeAVCCea5.0V, Vbeb5.0V, VREFea5.0V, Analog Input SourceImpedancee600

Digital and DC Electrical CharacteristicsThe following specifications apply for DVCCeAVCCea5.0V, Vbeb5.0V, VREFea5.0V, and fCLKe2.0 MHz unlessotherwis

AC Electrical Characteristics (Continued)Note 4: The power dissipation of this device under normal operation should never exceed 169 mW (Quiescent Pow

Electrical Characteristics (Continued)TL/H/11017–6FIGURE 1b. Simplified Error Curve vs Output Code without Auto-Cal or Auto-Zero CyclesTL/H/11017–7FIG

Typical Performance Characteristics (Continued)Linearity Error vs VREFFrequencyLinearity Error vs ClockAmbient TemperatureFull Scale Error Change vsIn

Typical Performance Characteristics (Continued)Bipolar Spectral Responsewith 20 kHz Sine Wave InputTL/H/11017–10Unipolar Spectral Responsewith 20 kHz

Timing Diagrams (Continued)Normal Conversion with Auto-Zero (CALe1, AZe0)TL/H/11017–17Normal Conversion without Auto-Zero (CALe1, AZe1)TL/H/11017–189