DIO20874BCL16

DIO20874B DIOO | Alldatasheet

Document overview

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Technical content

Features

 Ultra-lowpowerconsumption: 1.25μA(typ)at V+=1.4V,VCM =0.3V  Widesupplyvoltagerange: 1.4Vto5.5V  Propagationdelay: 1.3μs(typ) atV+ =1.4V, overdrive=100mV  Open-drain outputsinkcurrent drive: 25mA(typ) at V+=5V  Rail-to-railinput  -40°Cto85°Coperating temperature range  Availablein theGreen QFN3*3-16package

Applications

 RCtimers  Windowdetectors  IRreceiver  Multivibrators  Alarm andmonitoringcircuits Descriptions The DIO20874B is an ultra-low power comparator with a typical power supply current of 1.25 μA. It has the best-in-class power supply current versus propagation delay performance. The propagation delay is as low as 1.3 μs with 100 mV overdrive at 1.4Vsupply. Designed to operate over a wide range of supply voltages, from 1.4 V to 5.5 V, with guaranteed operation at 1.4 V, 2.5 V and 5.0 V, the DIO20874B is ideal for use in a variety of battery-powered applications. With rail-to-rail common mode voltage range, the DIO20874B is well suited for single-supplyoperation. Featuring an open-drain output stage, the DIO20874B allows for operation with absolute minimum power consumption when driving any capacitiveorresistiveload. The DIO20874B is available in the Green QFN3*3-16package.TheDIO20874Bisidealforthe use in handheld electronics and mobile phone applications. It is rated over the -40°C to 85°C temperaturerange. OrderingInformation OrderPartNumber TopMarking RoHS TA Package DIO20874BCL16 DH7DB Green -40to85°C QFN3*3-16 Tape&Reel,5000

www.dioo.com ©2023DIOOMICROCIRCUITSCO.,LTD DIO20874B•Rev.1.2 Micro-PowerCMOSInputRRIO1.4VOpen-DrainOutputComparator PinAssignments QFN3*3-16 Figure 1.Pinassignment(Topview) PinDescription Pinname Description OUT1 Outputpinofthecomparator1 OUT2 Outputpinofthecomparator2 OUT3 Outputpinofthecomparator3 OUT4 Outputpinofthecomparator4 V+ Positivesupply V- Negativesupply IN1+ Positiveinput pinofthecomparator1 IN1– Negativeinputpinofthecomparator1 IN2+ Positiveinput pinofthecomparator2 IN2– Negativeinputpinofthecomparator2 IN3+ Positiveinput pinofthecomparator3 IN3– Negativeinputpinofthecomparator3 IN4+ Positiveinput pinofthecomparator4 IN4– Negativeinputpinofthecomparator4 NC Noconnection Thermalpad Ground

www.dioo.com ©2023DIOOMICROCIRCUITSCO.,LTD DIO20874B•Rev.1.2 Micro-PowerCMOSInputRRIO1.4VOpen-DrainOutputComparator AbsoluteMaximumRatings Stresses beyond those listed under theAbsolute Maximum Rating table may cause permanent damage to the device. These are stressratingsonly and functional operationof the deviceat theseor any other conditionbeyond thoseindicatedin theoperational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect devicereliability.DIOOdoesnotrecommendexceedingthem ordesigningtoabsolutemaximumratings. Symbol Parameter Rating Unit VCC Supplyvoltage(V+ –V-) 7.5 V VIN Inputvoltage (V-)-0.5Vto(V+)+0.5V V VD Differentialinput voltage ±2.5V V TA Operatingtemperaturerange -40to85 °C TSTG Storagetemperaturerange -55to150 °C TJ Junctiontemperature 160 °C TL Leadtemperaturerange 260 °C ESD Electrostaticdischarge HBM,JEDEC:JESD22-A114 4000 V CDM,JEDEC:JESD22-C101 400 RecommendedOperatingConditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditionsarespecifiedtoensureoptimalperformancetothedatasheetspecifications. Symbol Parameter Rating Unit VCC Supplyvoltage 1.4to5.5 V TA Operatingtemperaturerange -40to85 °C

www.dioo.com ©2023DIOOMICROCIRCUITSCO.,LTD DIO20874B•Rev.1.2 Micro-PowerCMOSInputRRIO1.4VOpen-DrainOutputComparator ElectricalCharacteristics:V+=1.4V (AtTA= 25°C, V+= 1.4V, V- = 0V, VCM= V+/2 and VO = V-, unless otherwise noted.) Parameter Symbol Condition Min Typ Max Unit Supply current IS -40°C≤TA≤85°C,VCM = 0.3 V 1.25 μA -40°C≤TA ≤85°C,VCM = 1.1 V 1.4 Output swinghigh VOH RPULL = 5 kΩ 1.4 V RPULL = 10 kΩ 1.4 Output swinglow VOL RPULL = 5 kΩ 62 mV RPULL = 10 kΩ 31 Output current IOUT Sink 1.4 mA Propagationdelay (hightolow) Overdrive = 10 mV 2.6 µs Overdrive = 100 mV 0.92 Propagationdelay (low tohigh) Overdrive = 10 mV 1.8 µs Overdrive = 100 mV 1.3 Risetime(1) tRise Overdrive = 10mV, CL = 1pF, RPULL= 10 kΩ µs Overdrive = 100mV,CL = 1pF, RPULL = 10 kΩ Falltime tFall Overdrive = 10mV, CL = 1pF, RPULL= 10 kΩ ns Overdrive = 100mV, CL= 1pF, RPULL= 10 kΩ Note: (1) RisetimedependsonRPULL andCL. (2) Specificationssubjecttochangewithoutnotice.

www.dioo.com ©2023DIOOMICROCIRCUITSCO.,LTD DIO20874B•Rev.1.2 Micro-PowerCMOSInputRRIO1.4VOpen-DrainOutputComparator ElectricalCharacteristics:V+=2.5V (AtTA= 25°C, V+= 2.5V, V- = 0V,VCM = V+/2 and VO = V-, unless otherwise noted.) Parameter Symbol Condition Min Typ Max Unit Supplycurrent IS -40°C≤TA ≤85°C,VCM = 0.3 V 1.35 μA -40°C≤TA ≤85°C,VCM = 2.2 V 1.45 Outputswing high VOH RPULL = 5 kΩ 2.5 V RPULL = 10 kΩ 2.5 Outputswing low VOL RPULL = 5 kΩ 52 mV RPULL = 10 kΩ 26 Outputcurrent IOUT Sink 7.1 mA Propagation delay (high tolow) Overdrive = 10 mV 2.4 µs Overdrive = 100 mV 0.8 Propagation delay (low tohigh) Overdrive = 10 mV 1.9 µs Overdrive = 100 mV 1.05 Rise time(1) tRise Overdrive = 10mV, CL = 1pF, RPULL= 10 kΩ µs Overdrive = 100mV,CL= 1pF, RPULL = 10 kΩ Fall time tFall Overdrive = 10mV, CL= 1pF, RPULL= 10 kΩ ns Overdrive = 100mV, CL= 1pF, RPULL= 10 kΩ Note: (1) RisetimedependsonRPULL andCL. (2) Specificationssubjecttochangewithoutnotice.

www.dioo.com ©2023DIOOMICROCIRCUITSCO.,LTD DIO20874B•Rev.1.2 Micro-PowerCMOSInputRRIO1.4VOpen-DrainOutputComparator ElectricalCharacteristics:V+ =5.0V (AtTA = 25°C, V+= 5.0V, V- = 0V, VCM= V+/2 and VO = V-, unless otherwise noted.) Parameter Symbol Conditions Min Typ Max Unit Supply current IS -40°C≤TA ≤85°C,VCM= 0.3 V 1.45 μA -40°C≤TA ≤85°C,VCM= 4.7 V 1.55 Output swinghigh VOH RPULL = 5 kΩ 5.0 V RPULL = 10 kΩ 5.0 Output swinglow VOL RPULL = 5 kΩ 60 mV RPULL = 10 kΩ 30 Output current IOUT Sink 25 mA Propagation delay (high to low) Overdrive = 10 mV 3.0 µs Overdrive = 100 mV 0.9 Propagation delay (low tohigh) Overdrive = 10 mV 2.7 µs Overdrive = 100 mV 1.1 Risetime(1) tRise Overdrive = 10mV, CL = 1pF, RPULL = 10 kΩ µs Overdrive= 100mV, CL= 1pF, RPULL = 10 kΩ Fall time tFall Overdrive = 10mV, CL = 1pF, RPULL = 10 kΩ ns Overdrive= 50mV, CL = 1pF, RPULL = 10 kΩ Note: (1) RisetimedependsonRPULL andCL. (2) Specificationssubjecttochangewithoutnotice.

www.dioo.com ©2023DIOOMICROCIRCUITSCO.,LTD DIO20874B•Rev.1.2 Micro-PowerCMOSInputRRIO1.4VOpen-DrainOutputComparator ApplicationInformation Hysteresis If the applied differential input voltage is near the offset voltage of the comparator, the basic comparator configuration may oscillate or produce a noisy "chatter" output. This oscillation usually occurs when the input signalismovingveryslowlyacrosstheswitchingthresholdofthecomparator. Addinghysteresisorpositivefeedbackcanpreventtheproblem. The hysteresis transfer curve is shown in Figure 2. This curve is a function of three components: VTH, VOS, and VHYST:

• VTH istheactual setvoltageorthresholdtripvoltage.
• VOS is the internal offset voltage between VIN+ and VIN–. This voltage is added to VTH to form the actual trip pointatwhichthecomparator mustrespondtochangeoutputstates.
• VHYST isthehysteresis(ortripwindow) thatisdesigned toreduce comparatorsensitivitytonoise. Figure2.Hysteresistransfercurve Invertingcomparatorwithhysteresis The inverting comparator with hysteresis requires a three-resistor network that is referenced to the comparator supplyvoltage(VCC),asshowninFigure3. Figure3.Invertingconfiguration withhysteresis Figure 4 is the equivalent resistor networks when the output is high and low. Note that RPU should be in series withR3when theoutputis high.RPU shouldbeatleast10timeslessthan R3.

www.dioo.com ©2023DIOOMICROCIRCUITSCO.,LTD DIO20874B•Rev.1.2 Micro-PowerCMOSInputRRIO1.4VOpen-DrainOutputComparator Figure4.Invertingconfigurationresistorequivalentnetworks WhenVIN islessthanVA,theoutputvoltageishigh(forsimplicity,assumeVO switchesashighasVCC).Thethree networkresistorscanberepresentedasR1||R3inseries withR2,asshowninFigure4. Equation1below definesthe high-to-low tripvoltage(VA1). When VIN is greater than VA,the outputvoltage is low.Inthis case,the three network resistors canbe presented asR2||R3inseries withR1,asshowninEquation2. UseEquation 2todefinethelowtohightripvoltage(VA2). ?2 || ?3 Equation3defines thetotal hysteresisprovidedby thenetwork. Non-invertingcomparatorwithhysteresis Anon-invertingcomparator withhysteresisrequires atwo-resistor networkandavoltagereference(VREF)atthe invertinginput,as shownin Figure5. Figure5.Non-invertingconfigurationwithhysteresis Figure6showstheequivalentresistor networkswhen theoutputis highandlow.Note thatRPU shouldbein series withR2whentheoutputishigh.RPU shouldbeatleast10timesless thanR2.

www.dioo.com ©2023DIOOMICROCIRCUITSCO.,LTD DIO20874B•Rev.1.2 Micro-PowerCMOSInputRRIO1.4VOpen-DrainOutputComparator Figure6.Non-Invertingconfiguration resistornetworks When VIN is less than VREF,, the output is low. For the output to switch from low to high, VIN must rise above the VIN1 threshold.UseEquation4tocalculateVIN1. ???? WhenVIN isgreater thanVREF,theoutputishigh.Forthecomparatortoswitchbacktoalowstate, VIN mustdrop belowVIN2.UseEquation5tocalculateVIN2. ???2 = ?2 5 Thehysteresisofthis circuitis thedifferencebetweenVIN1 andVIN2,as showninEquation6. ?2 6

www.dioo.com ©2023DIOOMICROCIRCUITSCO.,LTD DIO20874B•Rev.1.2 Micro-PowerCMOSInputRRIO1.4VOpen-DrainOutputComparator PhysicalDimensions:QFN3*3-16 CommonDimensions(mm) Symbol Min Nom Max A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 0.20REF b 0.20 0.25 0.30 D 2.95 3.00 3.05 E 2.95 3.00 3.05 D2 1.60 1.70 1.75 E2 1.60 1.70 1.75 e 0.40 1.50 0.60 H 0.30REF K 0.15 - - L 0.35 0.40 0.45

www.dioo.com ©2023DIOOMICROCIRCUITSCO.,LTD DIO20874B•Rev.1.2 Micro-PowerCMOSInputRRIO1.4VOpen-DrainOutputComparator CONTACTUS Diooisaprofessionaldesignandsalescorporationforhigh-qualityandperformanceanalogsemiconductors.Thecompanyfocuseson industry markets, such as cell phones, handheld products, laptops, medical equipment, and so on. Dioo’s product families include analog signal processing and amplifying, LED drivers, and charger ICs. Go to http://www.dioo.com for a complete list of Dioo product families. Foradditionalproductinformationorfulldatasheet,pleasecontactoursalesdepartmentorrepresentatives.