Low-power quad voltage comparator - STMicroelectronics

1 February 2012 Doc ID 2468 Rev 71/1717LM2901 Low-power quad voltage comparatorFeatures Wide single supply voltage range or dual supplies for all devices: +2 V to +36 V or 1 V to 18 V Very low supply current ( mA) independent of supply voltage ( 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 outputsDescriptionThis device consists of four independent precision voltage comparators, which are designed specifically to operate from a single supply over a wide range of voltages. Operation from split power supplies is also comparators also have a unique characteristic in that the input common-mode voltage range includes the negative rail even though operated from a single power supply (Plastic package)DSO-14(Plastic micropackage)PTSSOP14(Thin shrink small outline package)Q4 QFN16 3x3(Plastic micropackage) Pin connection and schematic diagramLM29012/17 Doc ID 2468 Rev 71 Pin connection and schematic diagramFigure connections (top view)

2 Figure diagram4567891011131231412 Output 2 Output 4 Output 3 Non-inverting input 4 VCC-Non-inverting input 3 Inverting input 4 VCC+Output 1 Inverting input 1 Non-inverting input 2 Inverting input 3 Non-inverting input 1 Inverting input A100 A100 AVCCLM2901 Absolute maximum ratings and operating conditionsDoc ID 2468 Rev 73/17 2 Absolute maximum ratings and operating conditions Table maximum ratingsSymbolParameterValueUnitVCCS upply voltage 18 to 36 VVidDifferential input voltage 36 VVinInput voltage to +36 VOutput short-circuit to ground (1)1. Short-circuits from the output to VCC+ can cause excessive heating and eventual destruction. The maximum output current is approximately 20 mA, independent of the magnitude of VCC+.RthjaThermal resistance junction to ambient(2)DIP14 SO-14 TSSOP14 QFN16 3x32.

3 Short-circuits can cause excessive heating. Destructive dissipation can result from simultaneous short-circuits on all amplifiers. All values are C/WRthjcThermal resistance junction to case(2)DIP14 SO-14 TSSOP14 QFN16 3x333313214 TjMaximum junction temperature+150 CTstgStorage temperature range-65 to +150 CESDHBM: human body model(3)3. 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 floating. 500 VMM: machine model(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 : charged device model(5)5.

4 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 pins. 1500 VTable conditionsSymbolParameterValueUnitVCCS upply voltage 2 to 32 1 to 16 VVicmCommon mode input voltage rangeTmin Tamb Tmax0 to (VCC+ )0 to (VCC+ -2)VToperOperating free-air temperature range-40 to +125 C Electrical characteristicsLM29014/17 Doc ID 2468 Rev 73 Electrical characteristics Table characteristics at VCC+ = 5 V, VCC- = GND, Tamb = 25 C (unless otherwise specified) offset voltage (1)Tmin Tamb Tmax1. 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).1715mVIioInput offset current Tmin Tamb Tmax550150nAIibInput bias current (II+ or II-) (2)Tmin Tamb Tmax2.

5 The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output, so there is no loading charge on the reference of input signal voltage gain(VCC = 15 V, RL=15k , Vo= 1 to 11 V) 25200V/mVICCS upply current (all comparators)VCC = +5 V, no loadVCC = +30 V, no input voltage (3)3. The response time specified is for a 100 mV input step with 5 mV +VVOLLow level output voltageVid = -1V, Isink = 4 mATmin 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 connected to VCC+)4. 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 will provide a proper output state.

6 The low input voltage state must not be less than V (or V below the negative power supply, if used). strelLarge signal response time(5)TTL input (Vref= + V, RL= to VCC+)Output signal at 50% of final valueOutput signal at 95% of final value 5. Maximum values are guaranteed by sLM2901 Electrical characteristicsDoc ID 2468 Rev 75/17 Figure current vs. supply voltageFigure current vs. supply voltageFigure saturation voltage vs. output currentFigure time for various input overdrives - negative transitionFigure time for various input overdrives - positive transition Typical application schematicsLM29016/17 Doc ID 2468 Rev 74 Typical application schematics Figure comparatorFigure CMOSVCC= 5 V15 k VO+V(ref)1/4LM2901-V(ref)5 V100 k &1/ 4LM2901+V(ref)-V(ref)Figure 10.

7 Driving TTLF igure 11. Low frequency op-amp5 V10 k +V(ref)&&1/ 4LM2901-V(ref)5 V15 k F100 k el1 k ~1/4LM2901AV = 100 Figure 12. Low frequency op-amp with boostFigure 13. Transducer amplifier5 V15 k F100 k 1 k ~2N 2222(eo = 0 V for el = 0 V)1/ 4LM2901eoelAV = 1005 V10 k eo20 M 3 k Magnetic pick-up10 k 1/ 4LM2901LM2901 Typical application schematicsDoc ID 2468 Rev 77/17 Figure 14. Low frequency op-amp withoffset adjustFigure 15. Zero crossing detector (single power supply)el~2N 22225 VeoR1100 k 1 k 5 V1 M 100 k 1 M Offset adjustRSR115 k FR21/ 4LM2901100 k 10 k el20 M 5 k k 100 k 1/ k Figure 16. Limit comparatorFigure 17. Split-supply applications - zero crossing detector10 k eI~RS2 RSV(ref)highV(ref)low2N 2222 VCCLamp1/ 4LM29011/ 4LM1392RS(12 V)15 k eoeI~15 V1/4LM2901 Figure 18.

8 Crystal controlled oscillatorFigure 19. comparator with a negative reference2 k 200 k eoVCC0100 k 200 k 1/ Ff = 100 kHzVCC= 15 V15 k eoeI~15 V5 V1/ 4LM2901 Typical application schematicsLM29018/17 Doc ID 2468 Rev 7 Figure 20. Time delay generatorFigure 21. Two-decade high-frequency VCOVCC0V(ref.)10 k 1/415 k 200 k 3 k 3 k 3 k 10 M VO2V03O1V51 k FVC1V3 VCCVC1V1V2V3001tt3t4t2ttVCCt0t1 VCCVCCVCC=+15V1/4LM29011/41/410 k 10 k 10 k 10 k 10 M 10 M 51 k 51 k t2tot3totAtoInput gating signalLM2901LM2901LM2901 VCCVCC100 k 3 k k /2 F500 pF100 k F20 k 50 k =+30V+250 mVVcontrol+50 V700 Hzf100 kHzo20 k 3 k 1/ 4LM29011/ 4LM29011/ 4LM2901 Output 1 Output 2 VCCVCCF requency controlvoltage inputVcontrol10 k LM2901 Package informationDoc ID 2468 Rev 79/17 5 Package informationIn order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance.

9 ECOPACK specifications, grade definitions and product status are available at: ECOPACK is an ST trademark. Package informationLM290110/17 Doc ID 2468 Rev DIP14 package informationFigure 22. DIP14 package mechanical drawing Table package mechanical informationDoc ID 2468 Rev 711/17 QFN16 3 x 3 package informationFigure 23. QFN16 3 x 3 mm package mechanical drawing Package informationLM290112/17 Doc ID 2468 Rev 7 Figure 24. QFN16 3 x 3 mm footprint recommendation Table 3 x 3 mm package mechanical data (pitch mm) informationDoc ID 2468 Rev 713/17 SO-14 package informationFigure 25. SO-14 package mechanical drawing Table package mechanical (max.) Package informationLM290114/17 Doc ID 2468 Rev TSSOP14 package informationFigure 26.

10 TSSOP14 package mechanical drawingTable package mechanical 8 0 8 informationDoc ID 2468 Rev 715/17 6 Ordering information Table codesOrder codeTemperature rangePackagePackingMarkingLM2901N-40 C to +125 CDIP14 TubeLM2901 NLM2901 DLM2901 DTSO-14 Tube or tape & reel2901LM2901 PTTSSOP14 Tape & reelLM2901Q4 TQFN16 3x3 Tape & reelK5 ILM2901 YDT(1)1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or (Automotive grade)Tape & reel2901 YLM2901 YPT(1)TSSOP14 (Automotive grade)Tape & reel Revision historyLM290116/17 Doc ID 2468 Rev 77 Revision history Table revision historyDateRevisionChanges01-Jan-20021 Initial - PPAP references inserted in the datasheet see Table : Order codes on page - ESD protection inserted in Table 1 on page following changes were made in this revision: PPAP part number added in table Order codes on page 1.