AD1508_15 AD | Alldatasheet
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Technical content
8 BitMonolithic
FEATURES
ImprovedRepl~C8m~ntforIndustryStandard1408/1508 ImprovedSettlingTime: 250nstyp ImprovedLinearity::to.1%AccuracyGuaranteedOver TemperatureRange (-9Grade) HighOutputVoltageCompliance:+O.5V to-5.0V LoW powerConsumption:157mW typ HighSpeed2.QuadrantMultiplyingInput:4.0mA/lls SlewRate SingleChipMonolithicConstruction Hermetic16 PinCeramicDIP LoW Cost PRODUCT DESCRIPTION TheAD 1408 and AD1S08 arelow costmonolithic integrated circUit8-bitmultiplyingdigital-to-analogconverters,consisting ofmatched bipolarswitches,a precisionresistornetWork and a controlamplifier.The singlechip ismounted ina hermetically sealedceramic 16 leaddual-in-linepackage. Advancedcircuitdesignand precisionprocessingtechniques resultinsignificantperformance advantagesover olderindus- trystandard1408/1S08 devices.The maximum linearityerror overthespecifiedoperatingtemperatUre rangeisguaranteed tobelessthan :t%LSB (-9 grade)while settlingtime to :t'hLSB isreducedto 2S0ns.typoThe temperaturecoefficientof gain istypically2Oppm/C and monotonicity isguaranteedover theentireoperatingtemperatUre range. TheAD1408/AD1S08 isrecommended foralllow-cost8-bit DAC requirements;itisalsosuitableforupgradingoverall performancewhere older,lessaccurateand slower 14O8/1S08 deviceshave been designedin.The AD14O8 seriesisspecified foroperationover the 0 to +7SoC temperature range,the ADlS08 seriesforoperationover the entiremilitatytempera- tUrerangeof -SSoC to +12SoC. PRODUCT HIGHLIGHTS 1. MonolithicIC constructionmakes the AD 1408/AD1S08 an optimum choiceforapplicationswhere low costisa major consideration. 2. The AD1408/AD1S08 directlyreplacesotherdevicesof thistype. 3. Versatiledesignconfigurationallowsvoltageor currentout- puts,variableor fixedreferenceinputs,CMOS or TTL logiccompatibilityand a wide choiceof accuracyand tem- peratUrerangespecifications. 4. Accuracieswithin:t%LSB allowperformance improvement of olderapplicationswithout redesign. S. Fastersettlingtime (2SOns typ) permitsuse inhigherspeed applications. 6. Low power consumption improves stabilityand reduces warm-up time. 7. The AD1408/AD1S08 multipliesintWo quadrantswhen a varyingreferencevoltageisapplied.When multiplicationis not required,a fixedreferenceisused. 8. The AD1408/AD1S08 isavailableinchip form; pleasecon- sultfactoryfor details. 9. The deviceispackaged ina hermetically-sealedceramic 16 leaddual-in-linepackage.Processingto MIL-STD-883 level B isavailable. D/A CONVERTERS 295 OBSOLETE
SPECIFICAJIUNS (typical@ +25°eandVee = +5.0Vdc,VEE = -15Vdeunlessotherwisenoted) - MAXIMUM RATINGS RATING POWER SUPPLY VOLTAGE DIGITAL INPUT VOLTAGE APPLIED OUTPUT VOLTAGE REFERENCECURRENT REFERENCE AMPLIFIER INPUTS POWER DISSIPATION (Package Limitation) Derate: above TA = +2S.C OPERATING TEMPERATURE RANGE ADI408 Series ADlS08 Series STORAGE TEMPERATURE RANGE SYMBOL VALUE UNIT Vee +5.5 V de VEE -16.5 V de Vs thru V12 +5.5,0 V de Vo +0.5,-5.2 Vde 114 5.0 mA V14' VIS Vee, VEE Vde 1000 mW Po 6.7 mWt"C TA 0 to +75 'c TA -55 to +125 'c TG -6S to +150 'c
ELECTRICAL CHARACTERISTICS
VREF ... (Vee =+S.OV dc:,VEE = -lSV dc:, ..2.OmA,AD1508 Series:TA = -SS C to +12S C ADI408 Series: TA =0 to +7S.C unfte otherwise noted. All digitalinputS at high logic:leve1.) CHARACTERISTIC SYMBOL MIN TYP MAX UNIT RELATIVE ACCURACY (ErrorRelativeto FullSc:ale'0) ADlS08-9, AD1408-9 E. - - :to.l0 % ADlS08-8,ADI408-8 E. - - :to.19 % SETTLING TIME toWithin1I2LSB [Inc:ludesTpLH] (TA =+2S.C) ts - 2S0 - ns PROPAGATION DELAY TIME TA = +2S.C TpLH ,TpHL - 30 100 ns OUTPUT FULL SCALE CURRENT DRIFT TClo - -20 - ppmrc DIGITAL INPUT WGIC LEVELS (MSB) High Levc:l,Logic:"I" VJH 2.0 - - Vde Low Level,Logic"0" VIL - - 0.8 Vde DIGITAL INPUT CURRENT (MSB) High Levc:l,VIN = S.OV IJH - 0 0.04 mA Low Levc:l,VIL = 0.8V IlL - -0.4 -0.8 mA REFERENCE INPUT BIAS CURRENT (PinIS) lIS - -1.0 -3.0 p.A. OUTPUT CURRENT RANGE VEE = -S.OV 'oR 0 2.0 2.1 mA VEE =-6.0V to-ISV 'oR 0 2.0 4.2 mA OUTPUT CURRENT VREF =2.000V, R14 = l00on '0 1.9 1.99 2.1 mA OUTPUT CURRENT (AllBitSLow) '0 (min) - 0 4.0 p.A. OUTPUT VOLTAGE COMPLIANCE -(E,"0.19% at TA = +2S.C) VEE = -SV Va - - -0.6,+0.5 Vde VEE below-l0V Va - - -S.O,+O.S Vde REFERENCE CURRENT SLEW RATE SRIREF - 4.0 - mAills OUTPUT CURRENT POWER SUPPLY SENSITIVITY PSS'o - O.S 2.7 p.A./V POWER SUPPLY CURRENT (AllBitSLow) Ice - +9 +14 mA lEE - -7.S -13 mA POWER SUPPLY VOLTAGE RANGE (TA =+2S.C) VeeR +4.S +S.O +S.S Vde VEER -4.S -IS -16.S V de POWER DISSIPATION AllBitSLow VEE = -S.OV de Po - 82 13S mW VEE =-ISV de Po - IS7 26S mW All BitSHigh VEE =-5.0V dc: Po - 70 - mW VEE =-15V de Po - 132 - mW spccif"JCatioassubjecttoelwlF withoutnotice.
296 D/A CONVERTERS
~ofthe acreferencemust be appliedthrough R14 topin 14. togroundwillimprove noiserejection. valuesof capacitanceare 1SpF, 37pF and 7SpF respectively. . increase,possiblycausingsmallshiftsinlinearity. settlingtime of the deviceisincreased.
16 COMPEN
15 VREF (-)
14 VREF (+1
13 Vcc
12 AS ILSSI
Figure 1. Pin Connections
the complete circuittransferfunctionisgiveninFigure 3.
- With allbits"OFF", adjustthe Al null-pot,Rl, for
- With allbits"ON", adjustRREF forVOUT = (Nominal
- With allbits"OFF", adjustRsp forVOUT = -F.S.=
- With Bit 1 (MSB) "ON", and allotherBits"OFF",
adjustRREF forVOUT = O.OOOV.
- With all bits "ON", verify that EoUT = +5.000V-
GUARANTEED TO -7 LEVEL PERFORMANCE. Figure 5. Chip Dimensions and Pad Layout. Dimensions shown in inchesand (mm).
298 D/A CONVERTERS
Dimensions shown in inchesand (mm).