Rainbow-electronics ADC12L038 Bedienungsanleitung

TL/H/11830ADC12L030/ADC12L032/ADC12L034/ADC12L0383.3V Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/HoldMarch 1995AD

Electrical Characteristics (Continued)TL/H/11830– 7FIGURE 1a. Transfer CharacteristicTL/H/11830– 8FIGURE 1b. Simplified Error Curve vs Output Code wit

Electrical Characteristics (Continued)TL/H/11830– 9FIGURE 1c. Simplified Error Curve vs Output Code after Auto-Calibration CycleTL/H/11830– 10FIGURE 2

Typical Performance CharacteristicsThe following curves apply for 12-bitasign mode after auto-calibration unless otherwise specified. The performance

Test CircuitsDO ‘‘TRI-STATE’’ (t1H,t0H)TL/H/11830– 15DO except ‘‘TRI-STATE’’TL/H/11830– 16Leakage CurrentTL/H/11830– 17Timing DiagramsDO Falling and R

Timing Diagrams (Continued)DO Data Output Timing Using CSTL/H/11830– 21DO Data Output Timing with CS Continuously LowTL/H/11830– 22ADC12L038 Auto Cal

Timing Diagrams (Continued)ADC12L038 Read Data without Starting a Conversion Using CSTL/H/11830– 24ADC12L038 Read Data without Starting a Conversion w

Timing Diagrams (Continued)ADC12L038 Conversion Using CSwith 8-Bit Digital Output FormatTL/H/11830– 26ADC12L038 Conversion Using CS with 16-Bit Digita

Timing Diagrams (Continued)ADC12L038 Conversion with CSContinuously Low and 8-Bit Digital Output FormatTL/H/11830– 28ADC12L038 Conversion with CS Cont

Timing Diagrams (Continued)ADC12L038 Software Power Up/Down Using CSwith 16-Bit Digital Output FormatTL/H/11830– 30ADC12L038 Software Power Up/Down wi

Timing Diagrams (Continued)ADC12L038 Hardware Power Up/DownTL/H/11830– 32Note: Hardware power up/down may occur at any time. If PD is high while a con

Connection Diagrams16-Pin Dual-In-Line andWide Body SO PackagesTL/H/11830– 2Top View20-Pin Dual-In-Line andWide Body SO PackagesTL/H/11830– 3Top View2

Pin DescriptionsCCLK The clock applied to this input controls the su-cessive approximation conversion time intervaland the acquisition time. The rise

Pin Descriptions (Continued)VREFaThis is the positive analog voltage reference in-put. In order to maintain accuracy the voltagerange of VREF(VREFeVRE

TablesTABLE I. Data Out FormatsDO Formats DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 DB8 DB9 DB10 DB11 DB12 DB13 DB14 DB15 DB16Signwith17X X X X Sign MSB 10 9 8

Tables (Continued)TABLE III. ADC12L034 Multiplexer AddressingAnalog Channel AddressedA/D InputMultiplexerModeMUX and AssignmentPolarityOutputAddress w

Tables (Continued)TABLE V. Mode ProgrammingADC12L038 DI0 DI1 DI2 DI3 DI4 DI5 DI6 DI7Mode Selected(Current)(next ConversionDO FormatCycle)ADC12L034 DI0

Tables (Continued)TABLE VII. Status RegisterStatus BitDB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 DB8LocationStatus Bit PU PD Cal 8 or 9 12 or 13 16 or 17 Sign Ju

Application Hints (Continued)sary to be input to the ADC to accomplish this configurationmodification. The next instruction, shown inFigure 6, issuedt

Application Hints (Continued)The following table lists the instructions required to returnthe device to user mode:InstructionDI DataDI0 DI1 DI2 DI3 DI

Application Hints (Continued)TL/H/11830– 46FIGURE 9. Single-Ended BiasingFor pseudo-differential signed operation the biasing circuitshown inFigure 10

Application Hints (Continued)TL/H/11830– 48FIGURE 11. Alternative Pseudo-Differential BiasingTL/H/11830– 50FIGURE 12. Fully Differential Biasing3.0 RE

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

Application Hints (Continued)system reference stability requirements because the analoginput voltage and the ADC reference voltage move togeth-er. Thi

Application Hints (Continued)ple, operating with a resolution of 12 Bitsasign,a5MHzclock frequency and maximum acquistion time of 34 conver-sion clock

Application Hints (Continued)12.0 THE CALIBRATION CYCLEA calibration cycle needs to be started after the power sup-plies, reference, and clock have be

Application Hints (Continued)15.0 AN RS232 SERIAL INTERFACEShown below is a schematic for an RS232 interface to anyIBM and compatible PCs. The DTR, RT

Application Hints (Continued)’variables DOL4Data Out word length, DI4Data string for A/D DI input,’DO4A/D result string’SET CS# HIGHOUT &H3FC, (&a

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Physical Dimensions inches (millimeters)Order Number ADC12L030CIWMNS Package Number M16BOrder Number ADC12L032CIWMNS Package Number M20B36

Physical Dimensions inches (millimeters) (Continued)Order Number ADC12L034CIWMNS Package Number M24BOrder Number ADC12L038CIWMNS Package Number M28B37

Physical Dimensions inches (millimeters) (Continued)Order Number ADC12L030CINNS Package Number N16EOrder Number ADC12L032CINNS Package Number N20A38

Physical Dimensions inches (millimeters) (Continued)Order Number ADC12L034CINNS Package Number N24C39

Converter Electrical Characteristics (Continued)The following specifications apply for VaeVAaeVDaea3.3 VDC,VREFaea2.500 VDC,VREFbe0VDC, 12-bitasign co

ADC12L030/ADC12L032/ADC12L034/ADC12L0383.3V Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/HoldPhysical Dimensions in

Electrical CharacteristicsThe following specifications apply for VaeVAaeVDaea3.3 VDC,VREFaea2.500 VDC,VREFbe0VDC, 12-bitasign conversion mode, fCKefSK

DC and Logic Electrical CharacteristicsThe following specifications apply for VaeVAaeVDaea3.3 VDC,VREFaea2.500 VDC,VREFbe0VDC, 12-bitasign conversion

AC Electrical CharacteristicsThe following specifications apply for VaeVAaeVDaea3.3 VDC,VREFaea2.500 VDC,VREFbe0VDC, 12-bitasign conversion mode, tret

AC Electrical Characteristics (Continued)The following specifications apply for VaeVAaeVDaea3.3 VDC,VREFaea2.500 VDC,VREFbe0VDC, 12-bitasign conversio

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