Rainbow-electronics ADC12181 User Manual

ADC1218112-Bit, 10 MHz Self-Calibrating, Pipelined A/D Converterwith Internal Sample & HoldGeneral DescriptionThe ADC12181 is a monolithic CMOS an

Specification DefinitionsAPERTURE JITTER is the variation in aperture delay fromsample to sample. Aperture jitter shows up as input noise.APERTURE DEL

Timing Diagrams10103921FIGURE 3. Data Output TimingADC12181www.national.com11

Timing Diagrams (Continued)Functional DescriptionThe ADC12181 is a monolithic CMOS analog-to-digital con-verter capable of converting analog input sig

Applications Information (Continued)2.2 CALThe level sensitive CAL input must be pulsed high for at leastthree clock cycles to begin ADC calibration.

Applications Information (Continued)5.0 LAYOUT AND GROUNDINGProper grounding and routing of all signals is essential toensure accurate conversion. Sep

Applications Information (Continued)should be avoided as even a little coupling can cause prob-lems at high frequencies. This is because other lines c

Applications Information (Continued)7.0 Common Application PitfallsDriving the inputs (analog or digital) beyond the powersupply rails. For proper ope

Physical Dimensions inches (millimeters)unless otherwise noted32-Lead TQFP PackageOrdering Number ADC12181CIVTNS Package Number VBE32ALIFE SUPPORT POL

Ordering Information (Continued)Industrial(−40˚C ≤ TA ≤ +85˚C) PackageADC12181 EVAL Evaluation BoardSimplified Block Diagram10103902ADC12181www.nation

Pin Descriptions and Equivalent Circuits #2No. Symbol Equivalent Circuit Description2VINAnalog signal input. With a 2.0V reference voltage,input signa

Pin Descriptions and Equivalent Circuits #2 (Continued)No. Symbol Equivalent Circuit Description14-19,22-27D0 - D11Digital output word, CMOS compatibl

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

DC and Logic Electrical CharacteristicsThe following specifications apply for AGND = DGND = DGND I/O = 0V, VA=VD=VDI/O = +5V, PD = +5V, VREF= +2.0V,fC

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

Transfer CharacteristicsTypical Performance CharacteristicsINL vs Temperature DNL vs Temperature10103911 1010391210103909FIGURE 1. Transfer Characteri

Typical Performance Characteristics (Continued)SNR vs Temperature SINAD vs Temperature10103913 10103914THD vs Temperature101039151010391710103916ADC12