AD2026_15 AD | Alldatasheet
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ANALOG DEVICES fAX-ON-DEHAND HOTLINE - Page 36 -..ANALOG W DEVICES I
FEATURES
Third Generation 12LLBI Design Logic Powered (+5 V DC) Large 0.56'"Red Orange LEOs Balanced Differentiallnput/Floatlng
1000 V, CMV
Terminal Block Interface(AC Version) High Reliability:>250,000 Hour MTBF Small Size and Weight Low Cost GENERAL DESCRIPTION The AD2026 isspecificallydesignedtoprovidea digitalalterna- tivetoanalogpanelmeters.The AD2026 logicpowered (+ 5 V dc).Most of theanalogdigitalcircuitryisimplemented on a singleI2L LSI chip,the AD2020. Only 13 additionalcompo- nentsarerequiredto complete the AD2026. The entireassem- bly ismounted on a single3" x I 5/8"PCB. The AD2026 offersasa standardfeature,0.56"high LED Displays.Brightnessisenhanced due to the Red Orange lens.In additionto theRed Orange lens,the AD2026 isalsoavailable with a dark red lensforapplicationswhere maximum brightness isnot requiredand minimum backlightingisdesired. A unique patented.casedesignutilizesmolded-infmgers,both tocapturethe PCB inthe caseand toprovidesnap-inmounting of the DPM ina standardpanelcutout.No mounting hardware of any kind isused..The AD2026 occupieslessthan 1"ofspace behind the panel. EXCELLENT PERFORMANCE The AD2026 offersthe instrumentdesignerdigitalaccuracy, resolutionand use ofreadoutwhileoccupyinglessspacethan its analogcounterpart.Other featuresofanalogmeters such asreli- abilityand instantaneousresponseareretainedin theAD2026. The AD2026 measures and displaysinputsfrom -99 mV to + 999 m V, with an accuracyof0.1% ofreading::tI digit.Zero shiftislessthan one bitover the fulloperatingtemperature range,resultinginthe same performanceas a DPM with auto zero.The balanceddifferentialinputof theAD2026 rejects common-mode voltagesup to200 mV, enough to eliminatemost ground loop problems. WIRING CONNECTIONS For Balanced Differentialoperationwith theAP2026, connect inputas shown in Figure 1.The common-mode loop must pro- videa returnpath forthe biascurrentsinternalto theAD2026. The resistanceof thispath must be lessthan 100 kO and total common-mode voltagesmust Dot exceed 200 mY. REV. A Informationfurnishedby Analog Devices isbelievedto be accurateand reliable.However. no responsibilityisassumed by Analog Devicesforits use,nor forany infringementsof patentsor other rightsof thirdparties which may resultfrom itsU58. No Iic8nseisgranted by implil:ationor otherwise under any patentor patentrightsof Analog Devices. Low Cost,3 Digit Logic Powered DPM AD2026* I For applicationswhere attenuationisrequiredscalingresistors can be connectedbetWeen Pins 6 and 7 and between Pins F and H. Pin 5 must be used as the High Analog InpUt when scaling resistorsareused and Pin 4 when they arenot.Pin E isthe Analog Low Input. 14) 11IW ~: RESISTPRS IE) 1(HI LO HI Ecc.M... IlOO£ ...v RC<10D1d11 Figure 1. PIN CONNECTIONS DC VERSION Tel: 617/329-4700 Fax: 617/326-8703 Twx: 710/394.6577 Telex: 924491 Cable: ANALOG NORWOODMASS Pin Function Pin Function 1 +5 V Power A Decimal PointXX.X 2 +S V DisplayPower B Decimal PointXXX.
3 Decimal PointXXX C Power Ground
4 Input (When Scaling) D Hold
ResistorsNot Used) E Analog Ground 5* Input (When Scaling F* Shunt Arm of Scaling ResistorsAre Used) ResistorDivider 6* SeriesAnn of Scaling H* Shunt Arm of Scaling ResistorDivider ResistorDivider 7* SeriesArm of Scaling ResistorDivider *Not norxmdlyused.Allowsconvenientmounting ofscalingresistors. OBSOLETE
ANALOG DEVICES fAX-ON-DEHAND HOTLINE - Page 37 AD2026- SPECIFICATIONS(typicalat+25°Candnominalsupplyvoltageunlessotherwisenoted) DISPLAY OUTPUT .LightEmittingDiode,PlanarSevenSegmentDisplay Readouts,0.56"(14.6mm) High (Orange) . OverloadIndication:EEE . NegativeIndication:-XX . NegativeOverloadIndication:- - - . DecimalPoints:Three (3)SelectableatInputConnector ANALOG INPUT . ConfJgUration:BalancedDifferentialInput . Full-ScaleRange:-99 mV to +999 mV . AutomaticPolarity . InputImpedance:100MIl; 100kfl(10V Option) . OvervoltageProduction::t15V dc,Sustained ACCURACY . :to.1% :tI DigitI . Resolution:ImV or 10mV . TemperatUreRange;!:-10"C to +60"C Operating:-25°C to +SOOC Storage . TemperatUreCoefficient:Gain: 50 ppmf'C Zero: 10 ~Vf'C (EssentiallyAuto Zero) . Warm-Up Time toRated Accuracy:Instantaneous . SettlingTime toRated Accuracy:0.3seeforFullInput VoltageSwing COMMON -MODE REJECTION (1 kfl Source Imbalance,DC to I kHz) . 50 dB, :t200mV Common-Mode Voltage . 116 dB (96dB on 10 V Range); 1000 V rIDSMax CMV (AC Version) NORMAL-MODE REJECTION .30 dB at50 Hz-60 Hz (AC Version) CONVERSION RATE . 4 Conversionsper Second . Hold and Read On Command CONTROL INPUTS DisplayBlankinglDisplayPower Input: The displayof the AD2026 can be blanked by removal of power to the display power input,with no effecton conversioncircuitry.Ifexter- nallogicswitchingisused, thedisplayrequires110 mA peak (85 mA Average)when illuminated. Hold: When theHold inputisat Logic "0", grounded or open circuit,the AD2026 win convertat4 conversionsper second.If a voltageof 0.6V to2.4 V isappliedtothisinput,the DPM willstopconvertingand hold the lastreading.A 12 kf!resistor in s~rieswith thisinputto + 5 V willprovidethe proper voltage input. DECIMAL POINT . To IlluminateDecimal PointSGround AppropriatePin (A, B or 3) POWER INPUT LOGIC POWER3 . Converter:+5 V :t5%, 0.2 Watts Typ; 0.33 Watts Max . Display:+ 5 V :t40%, 0.45 Watts Typ; 0.75Watts Max CALIBRATION ADJUSTMENTS . Gain. Zero . Recommended RecalibrationInterval:Six Months SIZE . 3.43"W " 2.0"H x 0.S5"D (87" x 52 x 22 nun) . 0.88"(22 mm) OverallDepth to Rear ofConnector WEIGHT . 1.8Ounces (53Grams) (DC Version) CONNECTIONS A lO-PinT&B/Ansley 6O9-l000M with Two Feet of 10 Con- ductorRibbon Cable IsAvailable.Order AC261S. Conductor toPin A IsColor Coded. Sequence of Ribbon ConnectionsIsA, I,B. 2. C. 3,Etc. ORDERING GUIDE AD2026 Lens4 Red Lens Red Orange Lens ~ }- ENTER ~ NOTES 'Guaranteed at +25"C and nominal supply voltage. 1Guaranteed. 'When the same power supply isused to power both displayand <:anyoner, +5 V, :::5%,0.65 watts typical,0.9 wans max isrequired. 'No Charge Options. Specificationssubjed to change without notice. OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 0..n:>7) D~~,~~ MODEL AD2026 MAD<" uu. o.,..TV ~' I-- 1 J 'Ull,PLea. U4 0"" 0.60 HOTEl, ,. ALL DIfIIENSlON'ARE IN INCHES AND I-I. Z. PANIL THIe TOO.'" "'1 10 1:1-2). -2- REV. A OBSOLETE