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Low-power dual voltage comparator

This is information on a product in full production. October 2018 DocID2470 Rev 131/21LM2903 Low-power dual voltage comparator Datasheet - production dataFeatures Wide single supply voltage range or dual supplies +2 V to +36 V or 1 V to 18 V Very low supply current ( mA) independent of supply voltage (1 mW/ comparator at +5 V) Low input bias current: 25 nA typ. Low input offset current: 5 nA typ. Input common-mode voltage range includes negative rail Low output saturation voltage : 250 mV typ. (IO = 4 mA) Differential input voltage range equal to the supply voltage TTL, DTL, ECL, MOS, CMOS compatible outputs Automotive qualificationRelated products See the LM2903W for similar devices with higher ESD performances See the LM2903H for similar devices with operating temperatur

This is information on a product in full production. November 2017 DocID2470 Rev 12 1/20 LM2903 Low-power dual voltage comparator Datasheet -production data Features

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Transcription of Low-power dual voltage comparator

1 This is information on a product in full production. October 2018 DocID2470 Rev 131/21LM2903 Low-power dual voltage comparator Datasheet - production dataFeatures Wide single supply voltage range or dual supplies +2 V to +36 V or 1 V to 18 V Very low supply current ( mA) independent of supply voltage (1 mW/ comparator at +5 V) Low input bias current: 25 nA typ. Low input offset current: 5 nA typ. Input common-mode voltage range includes negative rail Low output saturation voltage : 250 mV typ. (IO = 4 mA) Differential input voltage range equal to the supply voltage TTL, DTL, ECL, MOS, CMOS compatible outputs Automotive qualificationRelated products See the LM2903W for similar devices with higher ESD performances See the LM2903H for similar devices with operating temperature up to 150 CDescriptionThis device consists of two independent Low-power voltage comparators designed specifically to operate from a single supply over a wide range of voltages.

2 Operation from split power supplies is also addition, the device has a unique characteristic in that the input common-mode voltage range includes the negative rail even though operated from a single power supply voltage .'62 SODVWLF PLFURSDFNDJH 376623 WKLQ VKULQN VPDOO RXWOLQH SDFNDJH ')1 [ PP SODVWLF PLFURSDFNDJH 60 LQL62 SODVWLF PLFURSDFNDJH Rev 13 Contents1 Schematic diagram .. 32 Package pin connections .. 43 Absolute maximum ratings and operating conditions .. 54 Electrical characteristics .. 65 Typical application schematics.]

3 86 Package information .. package information .. package information .. package information .. 2x2 package mechanical data (LM2903Q2T) .. 2x2 package mechanical data (LM2903YQ3T) .. 177 Ordering information .. 188 Revision history .. 19 DocID2470 Rev 133/21LM2903 Schematic diagram211 Schematic diagramFigure 1. Schematic diagram (1/2 LM2903) A100 A100 ANon-invertinginputInvertinginputPackage pin connectionsLM29034/21 DocID2470 Rev 132 Package pin connectionsFigure 2.

4 Pin connections for each package (top view)(a)a. Exposed pad can be left floating or connected to ,Q ,Q 9&& 9&& 2XW ,Q ,Q 2XW ,Q ,Q 9&& 9&& 2XW ,Q ,Q 62 2XW ,Q ,Q 9&& 9&& 2XW ,Q ,Q ')1 [ DQG ')1 [ ZHWWDEOH IODQNV D 9&& ,1 287 9&& ,1 287 ,1 ,1 76623 0 LQL62 1&DocID2470 Rev 135/21LM2903 Absolute maximum ratings and operating conditions213 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratingsSymbolParameterValueUnitVCCS upply voltage 18 or 36 VVidDifferential input voltage 36 VinInput voltage to +36 Output short-circuit to ground (1)1.]]

5 Short-circuits from the output to VCC+ can cause excessive heating and possible destruction. The maximum output current is approximately 20 mA, independent of the magnitude of VCC+.InfiniteRthjaThermal resistance junction to ambient(2)SO8 TSSOP8 MiniSO8 DFN8 2x2 mm2. Short-circuits can cause excessive heating and destructive dissipation. Values are C/WRthjcThermal resistance junction to case(2)SO8 TSSOP8 MiniSO8 DFN8 2x2 mm40373957 TjMaximum junction temperature+150 CTstgStorage temperature range-65 to +150 ESDH uman body model (HBM)(3)3.

6 Human body model: a 100 pF capacitor is charged to the specified voltage , then discharged through a k resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are left model (MM)(4)4. Machine model: a 200 pF capacitor is charged to the specified voltage , then discharged directly between two pins of the device with no external series resistor (internal resistor < 5 ). This is done for all couples of connected pin combinations while the other pins are left : charged device model (all packages except MiniSO8)(5)5.

7 Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly to the ground through only one pin. This is done for all : charged device model (MiniSO8) 2. Operating conditionsSymbolParameterValueUnitVicmCo mmon mode input voltage range Tmin Tamb Tmax0 to VCC+ to VCC+ -2 VToperOperating free-air temperature range-40 to +125 CElectrical characteristicsLM29036/21 DocID2470 Rev 134 Electrical characteristics Table 3. VCC+ = 5 V, VCC- = GND, Tamb = 25 C (unless otherwise specified) offset voltage (1) Tmin Tamb Tmax1715mVIioInput offset current Tmin Tamb Tmax550150nAIibInput bias current(2) Tmin Tamb Tmax25250400 AvdLarge signal voltage gain VCC = 15 V, RL= 15 k , Vo= 1 to 11 V25200V/mVICCS upply current (all comparators )VCC = 5 V, no load VCC = 30 V, no input voltage (3)VCC+VVOLLow level output voltage (Vid = -1 V, Isink = 4 mA)

8 Tmin Tamb Tmax250400700mVIOHHigh level output current (VCC =Vo = 30 V, Vid = 1 V) Tmin Tamb AIsinkOutput sink current (Vid = -1 V, Vo = V)616mAtresSmall signal response time(4) (RL = k to VCC+) strelLarge signal response time(5) TTL input (Vref = + V, RL= k to VCC+)Output signal at 50% of final value Output signal at 95% of final value5001ns s1. At output switch point, VO V, RS = 0 with VCC+ from 5 V to 30 V, and over the full input common-mode range (0 V to VCC+ V).2. The direction of the input current is out of the IC due to the PNP input stage.

9 This current is essentially constant, independent of the state of the output, so no loading charge exists on the reference of input Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the comparator provides a proper output state. The low input voltage state must not be less than V (or V below the negative power supply, if used).4. The response time specified is for a 100 mV input step with 5 mV Maximum values are guaranteed by design and Rev 137/21LM2903 Electrical characteristics21 Figure 7.

10 Response time for various input overdrives - positive transitionFigure 3. Supply current vs. supply voltageFigure 4. Input current vs. supply voltageFigure 5. Output saturation voltage vs. output currentFigure 6. Response time for various input overdrives - negative transitionTypical application schematicsLM29038/21 DocID2470 Rev 135 Typical application schematics Figure 8. Basic comparatorFigure 9. Driving CMOSVCC= 5 V15 k VO+V(ref)1/2LM2903-V(ref)5 V100 k &1/ 2LM2903+V(ref)-V(ref)Figure 10. Driving TTLF igure 11.


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