CAV-1202

CAV-1202_15 AD | Alldatasheet

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-..ANALOG W DEVICES 12-BitEurocard Analog-to-DigitalConverter

FEATURES

No External Support Circuits

APPLICATIONS

The Analog DevicesModel CAV-1202 AID Converterisa unique combinationof 12-bitresolution,2MHz word rates,and small sizecapableofbeingappliedina multitudeofhigh-speeddigitizing applications. This remarkable,complete converterincludesa track-and-hold alongwith encoding and timingcircuitsin a single"Eurocard" format.The unitrequiresonly an encode command and external power supplies;no externalsupport circuitsareneeded. Increasingly,largescaleelectronicdevicesand systemsaredesigned in modular form. This approach forcombining complex circuits and subsystemsisbestservedifallcomponents of the systems GAIN ANALOG INPUT sharea common, standardgeometry.When they do, itbecomes possibleto combine modules ofvariousfunctionsand manufac- turersin one common subrack. In Europe and many otherpartsoftheworld,Europa and double Europa-sizeprintedcircuitboards areused extensivelyas the basisofa standardized19"system.The fourlevelsofthissystem have evolvedintoa standardarrangement ofdimensionswhich make itpossibleto combine components in one leveland insert them intothe components of the next higherlevel. The designoftheCA V-1202 isbasedon theLevel 2 requirements forprintedcircuitboard subunitsand meets the standardses- tablishedby DIN 41494, IEC 48D (see)12. HYBRIO DIGITAL CORRECTION LOGIC AND REGISTER GROUND GROUND CA V-1202 Block Diagram Information furnished by Analog Devices is believedto be accurate and reliable.However, no responsibilityisassumed by Analog Devices for itsuse;nor for any infringementsof patentsor other rightsof third partieswhich may resultfrom itsuse.No licenseisgrantedby implica- tion or otherwiseunder any patent or patent rightsof Analog Devices. Route 1 IndustrialPark; P.O. Box 280; Norwood, Mass. 02062 Tel:617/329-4700 TWX: 710/394-6577 West Coast Mid-West Texas 7141641-9391 312/653-5000 214/231-5094 OBSOLETE

SPECIFICATIONS(typical@ +25"Cwithnominalpowersuppliesunlessotherwisenoted) Parameter RESOLUTION (FS = Full Scale) LSB WEIGHT Units Bits(%FS) mV CAV-1202 12(0.024) 1.0 NOTES 'In-Band Hannonics expressed in terinsof spurious in-band signalsand related hannonics generated al 2MHz encode rare.Minimums sbown guaranteed over operating temperature range of O°C to + 70'C. 'Measured leading edge Encode Command to trailingedge of associated Data Ready; use trailingedge to strobe output data into external circuits (see text). 'For word rates below 100kHz, consult factory. 'See text for description of EffectiveAperture Delay Time. 'Rms signal to rms noise ratiowith fullscale 540kHz analog input; minimums guaranteed over operating temperature range of O°C to + 70°C (see Figure 3). 'For full-scalestep input, 12-bitaccuracy attained in specifiedtime. 'Recovers to 12-bil accuracy in specifiedtime after2 x FS input overvoltage. 'Input bandwidth flatwithin 0.2dB, de to IMHz. 'Each input frequency applied at level7dB below fullscale. "Standard bipolar input is adjustable'" 5% with on-card potentiometer (see text and Figure 1). "Adjustable'" 15mV without performance degradation (see text and Figure 1). "Transition from digital"0" to digital"1" initiatesencoding. 13'"15V must be equal and opposite within 200mV and track over temperature. Specificationssubject to change without notice. (Including Linearity)'@dc Monotonicity Diff.Nonlinearity vs.TemperatUre Offsetvs.Temperature Gain vs.TemperatUre ppmrC (max) ppmrC (max) ppmrC(max) Guaranteed Over Temperature 2(4) 50(100) 75(150) In-Band Harmonics' de to500kHz InpUt 500kHz to IMHz InpUt Conversion Time' Conversion Rate' Aperture Uncertainty (Jitter) EffectiveApertUre Delay Time' SignaltoNoise Ratio (SNR)' 360kHz Input Transient Response6 Overvoltage Recovery' InpUt Bandwidth (3dB)" Two-Tone Linearity(@ Input Frequencies)9 (500kHz; 540kHz) ANALOG INPUT Voltage Range 10 Operating Maximum Without Damage InpUt Type Impedance Offset" Initial dB Below FS (min) dB Below FS (min) ns(max) MHz (max) ps,rms,max ns(max) dB (min) ns ns MHz dB Below FS V,FS V,max D mV 74(70) 67(60) 400 (:!:25)+ 2ClockPeriods dct02(2.2) -19(:!:5) 66(65) 500 1000 :!:2.048 :':4 Bipolar :,:2 PIN DESIGNATIONS Logic Levels,TTL-Compatible Impedance Rise and FallTimes Wjdth Min Max Frequency DIGITAL OUTPUT Format V V D,min nS,max "0" =0 to +0.4 "1"~+2.5to+5.0 lOOk ns 20 70% ofEncode Command Period MHz dcto2 LogicLevels,TTL-Compatible Drive Time Skew Coding Data Bits Data Ready V LS Loads nS,max 12Parallel,PlusMSB; NRZ I;RZ "O"=Oto +0.5 "1"= +2.5to +4.0 Binary(BIN); 2'sComplement (2SC) Logic Levels,TTL-Compatible Drive Rise and FallTimes Duration V LS Loads ns,max ns(max) "O"=Oto +0.5 "I"=+2.5to+4.0 50(:':10) + l5V :':5% -15V :':5% + 5V :':5% -5.2V:,:5% Power Consumption TEMPERATURE RANGE Operating Storage Cooling Air Requirements mA (max) mA (max) mA(max) A (max) W(max) 105(120) 70(80) 530(550) 1.0(1.2) 10.5 (12) 'c Oto +70 'c -55 to+85 LFPM 500 (LinearFeetPerMinute) CONSTRUCTION SinglePrinted CircuitCard Including Connectors Board Only ~ ~- (1-4) Millimeters Inches Millimeters Inches 167.3xIOOxI3.13 6.59x3.93xO.517 160x 100x 1.57 6.3x 3.93x 0.062 1940 For Applications AssiStance,CallCompUter Labs Division «(1)(919)668-95 II. -2- 'CONNECTED INTERNALLY TO GROUND PINS ANALOG INPUT IS SMA CONNECTOR LABELED J2 ROW A ROWB PIN FUNCTION PIN FUNCTION

1 GROUND 1 ENCODE COMMAND

2 GROUND 2 GROUND

3 GROUND 3 GROUND

4 GROUND 4 GROUND

5 GROUND 5 GROUND

6 GROUND 6 GROUND

7 GROUND 7 GROUND

8 NO CONNECTION 8 DATA READY

9 GROUND 9 GROUND

10 GROUND 10 GROUND

11 -5.2V 11 -5.2V 12 -5.2VSENSE 12 -5.2VRETURN' 13 +15V 13 +15V 14 + 15V SENSE 14 + 15V RETURN' 15 -15V 15 -15V 16 - 15V SENSE 16 -15V RETURN' 17 +5V 17 +5V 18 +5VSENSE 18 + 5V RETURN'

19 GROUND 19 GROUND

20 GROUND 20 BIT 1 (MSB)

21 GROUND 21 BIT 1 (MSB)

22 GROUND 22 BIT2

23 GROUND 23 BIT3

24 GROUND 24 BIT4

25 GROUND 25 BIT5

26 GROUND 26 BIT6

27 GROUND 27 BIT7

28 GROUND 28 BIT8

29 GROUND 29 BIT9

30 GROUND 30 BIT10

31 GROUND 31 BIT 11

32 GROUND 32 BIT 12 (LSB)

Dimensions shown ininchesand (mm). Refer to the block diagram of the CA V -1202. theanaloginputsignallongenough tobeginthedigitizingprocess. Delay Time in the SpecificationsTable. causeseffectiveaperturedelayto be typically-I9ns. fast-settlingoperationalamplifier. tothedigitalcorrectionlogiccircuitsand a second setofregisters. analoginputhas been subtractedfrom thatinput. logiccircuitswhich containBits1-5. Bits6-12 of the CAV-I202 digitaloutput. designincludedexpensive,high precisioncomponents. formance withouta need for"tweaking" by theuser. requirereadjustment,the procedure below isthe one touse. Refer toFigure 1,theCA V-I202 Adjustment Controls. Figure 1. Offset and Gain Controls