LM2903 Low-power dual voltage comparator Datasheet − production data Features ■ Wide single supply voltage range or dual supplies +2 V to +36 V or ±1 V to ±18 V ■ Very low supply current (0.4 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 qualification Description This device consists of two independent lowpower voltage comparators designed specifically to operate from a single supply over a wide range of voltages. Operation from split power supplies is also possible. The device also 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. December 2012 This is information on a product in full production. Doc ID 2470 Rev 10 N DIP8 (Plastic package) D SO-8 (Plastic micropackage) P TSSOP8 (Thin shrink small outline package) DFN8 2x2 mm (Plastic micropackage) 1/18 www.st.com 18 Contents LM2903 Contents 1 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Package pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 Typical application schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6.1 DIP8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6.2 SO-8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6.3 TSSOP8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6.4 DFN8 2x2 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2/18 Doc ID 2470 Rev 10 LM2903 1 Schematic diagram Schematic diagram Figure 1. Schematic diagram (1/2 LM2903) 3.5 μA 3.5 μA 100 μA 100 μA Non-inverting input Inverting input 2 Package pin connections Figure 2. Pin connections for each package (top view) /54 ). ). 6## 6## /54 ). ). DIP8 / SO-8 / TSSOP8 / DFN8 Doc ID 2470 Rev 10 3/18 Absolute maximum ratings and operating conditions 3 LM2903 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings Symbol Parameter VCC Supply voltage Vid Differential input voltage Vin Input voltage Value Unit ±18 or 36 ±36 V -0.3 to +36 Output short-circuit to ground (1) Infinite (2) Rthja Thermal resistance junction to ambient DIP8 SO-8 TSSOP8 DFN8 2x2 mm Rthjc Tj Maximum junction temperature 41 40 37 +150 °C Storage temperature range Human body model (HBM)(3) ESD °C/W case(2) Thermal resistance junction to DIP8 SO-8 TSSOP8 Tstg 85 125 120 57 (4) -65 to +150 800 V Machine model (MM) 200 CDM: charged device model(5) 1.5 kV + 1. 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+. 2. Short-circuits can cause excessive heating and destructive dissipation. Values are typical. 3. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating. 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 Ω). This is done for all couples of connected pin combinations while the other pins are floating. 5. 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. Table 2. Symbol 4/18 Operating conditions Parameter Vicm Common mode input voltage range Tmin ≤ Tamb ≤ Tmax Toper Operating free-air temperature range Doc ID 2470 Rev 10 Value Unit 0 to VCC+ -1.5 0 to VCC+ -2 V -40 to +125 °C LM2903 Electrical characteristics 4 Electrical characteristics Table 3. VCC+ = 5 V, VCC- = GND, Tamb = 25°C (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit mV Vio Input offset voltage(1) Tmin ≤ Tamb ≤ Tmax 1 7 15 Iio Input offset current Tmin ≤ Tamb ≤ Tmax 5 50 150 Iib Input bias current(2) Tmin ≤ Tamb ≤ Tmax 25 250 400 nA Avd Large signal voltage gain VCC = 15 V, RL= 15 kΩ, Vo= 1 to 11 V ICC Supply current (all comparators) VCC = 5 V, no load VCC = 30 V, no load Vid Differential input voltage(3) VOL Low level output voltage (Vid = -1 V, Isink = 4 mA) Tmin ≤ Tamb ≤ Tmax 250 IOH High level output current (VCC =Vo = 30 V, Vid = 1 V) Tmin ≤ Tamb ≤ Tmax 0.1 Isink Output sink current (Vid = -1 V, Vo = 1.5 V) tres Small signal response time(4) (RL = 5.1 kΩ to VCC+) 25 200 0.4 1 V/mV 1 2.5 mA VCC+ V 400 700 mV 1 6 nA µA 16 mA 1.3 µs time(5) trel 1. Large signal response TTL input (Vref = +1.4 V, RL= 5.1 kΩ to VCC+) Output signal at 50 % of final value Output signal at 95 % of final value 500 1 ns µs At output switch point, VO ≈ 1.4 V, RS = 0 Ω with VCC+ from 5 V to 30 V, and over the full input common-mode range (0 V to VCC+ –1.5 V). 2. 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 no loading charge exists on the reference of input lines. 3. 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 –0.3 V (or 0.3 V below the negative power supply, if used). 4. The response time specified is for a 100 mV input step with 5 mV overdrive. 5. Maximum values are guaranteed by design and evaluation. Doc ID 2470 Rev 10 5/18 Electrical characteristics LM2903 Figure 3. Supply current vs. supply voltage Figure 4. Input current vs. supply voltage Figure 5. Output saturation voltage vs. output current Figure 6. Response time for various input overdrives - negative transition Figure 7. Response time for various input overdrives - positive transition 6/18 Doc ID 2470 Rev 10 LM2903 Typical application schematics 5 Typical application schematics Figure 8. Basic comparator Figure 9. Driving CMOS 5V VCC = 5 V 100 kΩ 15 kΩ +V(ref) +V(ref) 1/2 LM2903 1/ 2 LM2903 VO & -V(ref) -V(ref) Figure 10. Driving TTL Figure 11. Low frequency op-amp 5V 5V 15 kΩ 1/2 LM2903 10 kΩ +V(ref) ~ 1/ 2 LM2903 & el eo -V(ref) 0.5 μF 100 kΩ & 1 kΩ AV = 100 Figure 12. Low frequency op-amp with boost Figure 13. Transducer amplifier 5V 5V (eo = 0 V for el = 0 V) Magnetic pick-up 15 kΩ 1/ 2 LM2903 ~ el 2N 2222 10 kΩ 3 kΩ 1/ 2 LM2903 0.5 μF eo 20 MΩ 100 kΩ eo 1 kΩ AV = 100 Doc ID 2470 Rev 10 10 kΩ 7/18 Typical application schematics LM2903 Figure 14. Low frequency op- amp with offset Figure 15. Zero crossing detector adjust (single power supply) 5V 5V Offset adjust 100 kΩ 5V 100 kΩ R2 RS 1 MΩ 5.1 kΩ R1 5.1 kΩ el 15 kΩ 1/ 2 LM2903 el ~ 5.1 kΩ 100 kΩ 1 MΩ 1/ 2 LM2903 2N 2222 1N4148 0.5 μ F R1 100 kΩ 1 kΩ 20 MΩ 10 kΩ eo Figure 16. Limit comparator Figure 17. Split-supply applications - zero crossing detector VCC (12 V) 15 V 10 kΩ 2RS V(ref) high 1/ 2 LM2903 5.1 kΩ Lamp RS eI 1/2 LM2903 eI ~ 2RS 1/2 LM2903 eo ~ 2N 2222 15 V V(ref) low Figure 18. Crystal controlled oscillator Figure 19. Comparator with a negative reference VCC = 15 V 15 V 200 kΩ 2 kΩ 100 kΩ 5.1 kΩ VCC 0.1 μF 1/2 LM2903 0 eo 1/2 LM2903 eI ~ 5V f = 100 kHz 15 V 200 kΩ 8/18 Doc ID 2470 Rev 10 eo LM2903 Typical application schematics Figure 20. Time delay generator VC C = +15 V 10 kΩ 15 kΩ 3 kΩ 200 kΩ 10 MΩ 10 kΩ 1/2 LM2903 V3 VCC V03 to t3 3 kΩ 10 kΩ 51 kΩ 1/2 LM2903 VCC 0 to tA 10 MΩ 10 kΩ VC1 1/2 LM2903 V2 V(ref.) VO2 VCC to t2 0.001 μF Input gating signal 3 kΩ VCC 10 MΩ 51 kΩ 1/2 LM2903 V3 VC1 V2 V1 0 t 0 t1 t2 t3 10 kΩ VCC V O1 t0 t1 V1 t 51 kΩ t4 Figure 21. Two-decade high-frequency VCO VCC 100 kΩ Frequency control voltage input Vcontrol 500 pF 10 kΩ 100 kΩ 3 kΩ 3 kΩ 5.1 kΩ 1/ 2 LM2903 1/ 2 LM2903 0.01 μF 0.1 μF Output 1 VCC /2 20 kΩ 50 kΩ VCC Output 2 20 kΩ 1/ 2 LM2903 VCC /2 VCC = + 30 V Vcontrol +50 V +250 mV 700 Hz fo 100 kHz Doc ID 2470 Rev 10 9/18 Package information 6 LM2903 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. 10/18 Doc ID 2470 Rev 10 LM2903 6.1 Package information DIP8 package information Figure 22. DIP8 package mechanical drawing Table 4. DIP8 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Inches Max. Min. Typ. 5.33 Max. 0.210 A1 0.38 0.015 A2 2.92 3.30 4.95 0.115 0.130 0.195 b 0.36 0.46 0.56 0.014 0.018 0.022 b2 1.14 1.52 1.78 0.045 0.060 0.070 c 0.20 0.25 0.36 0.008 0.010 0.014 D 9.02 9.27 10.16 0.355 0.365 0.400 E 7.62 7.87 8.26 0.300 0.310 0.325 E1 6.10 6.35 7.11 0.240 0.250 0.280 e 2.54 0.100 eA 7.62 0.300 eB L 10.92 2.92 3.30 3.81 Doc ID 2470 Rev 10 0.430 0.115 0.130 0.150 11/18 Package information 6.2 LM2903 SO-8 package information Figure 23. SO-8 package mechanical drawing Table 5. SO-8 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Max. Min. Typ. 1.75 0.25 Max. 0.069 A1 0.10 A2 1.25 b 0.28 0.48 0.011 0.019 c 0.17 0.23 0.007 0.010 D 4.80 4.90 5.00 0.189 0.193 0.197 E 5.80 6.00 6.20 0.228 0.236 0.244 E1 3.80 3.90 4.00 0.150 0.154 0.157 e 0.004 0.010 0.049 1.27 0.050 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 L1 k ccc 12/18 Inches 1.04 1° 0.040 8° 0.10 Doc ID 2470 Rev 10 1° 8° 0.004 LM2903 6.3 Package information TSSOP8 package information Figure 24. TSSOP8 package mechanical drawing Table 6. TSSOP8 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Inches Max. Min. Typ. 1.20 A1 0.05 A2 0.80 b Max. 0.047 0.15 0.002 1.05 0.031 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.008 D 2.90 3.00 3.10 0.114 0.118 0.122 E 6.20 6.40 6.60 0.244 0.252 0.260 E1 4.30 4.40 4.50 0.169 0.173 0.177 e 0.65 k 0° L 0.45 L1 aaa 1.00 0.60 0.006 0.039 0.041 0.0256 8° 0° 0.75 0.018 1 8° 0.024 0.030 0.039 0.10 Doc ID 2470 Rev 10 0.004 13/18 Package information 6.4 LM2903 DFN8 2x2 package mechanical data Figure 25. DFN8 2x2 package mechanical drawing !-3?6 Table 7. DFN8 2x2x0.6 mm package mechanical data (pitch 0.5 mm) Dimensions Ref. A Millimeters Min. Typ. Max. Min. Typ. Max. 0.51 0.55 0.60 0.020 0.022 0.024 A1 0.05 A3 0.002 0.15 0.006 b 0.18 0.25 0.30 0.007 0.010 0.012 D 1.85 2.00 2.15 0.073 0.079 0.085 D2 1.45 1.60 1.70 0.057 0.063 0.067 E 1.85 2.00 2.15 0.073 0.079 0.085 E2 0.75 0.90 1.00 0.030 0.035 0.039 e 14/18 Inches 0.50 0.020 L 0.50 0.020 ddd 0.08 0.003 Doc ID 2470 Rev 10 LM2903 Package information Figure 26. DFN8 2x2 footprint recommendation MM MM MM MM MM MM !-3?6 Doc ID 2470 Rev 10 15/18 Ordering information 7 LM2903 Ordering information Table 8. Order codes Order code Temperature range Package Packing Marking LM2903N DIP8 Tube LM2903N LM2903D/DT SO-8 Tube or tape & reel 2903 SO-8 (Automotive grade) LM2903YDT(1) 2903Y -40°C to +125°C LM2903PT TSSOP8 2903 Tape & reel LM2903YPT(2) LM2903Q2T TSSOP8 (Automotive grade) 2903Y DFN8 2x2mm K1Z 1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or equivalent. 2. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or equivalent are on-going. 16/18 Doc ID 2470 Rev 10 LM2903 8 Revision history Revision history Table 9. Document revision history Date Revision 15-Jun-2003 1 Initial release. 2-May-2005 2 PPAP references inserted in the datasheet see table order code p1. 8-Aug-2005 3 Electrical characteristics table corrected (see Table 3 on page 5). Pin connections diagram moved to cover page. Lead-free package information added. 27-Oct-2005 4 PPAP part number added in Table 8: Order codes. 11-May-2007 5 ESD tolerance added in Table 1: Absolute maximum ratings on page 4. 6 Added Rthja and Rthjc, and ESD CDM parameters in Table 1: Absolute maximum ratings. Removed Vicm from electrical characteristics in Table 3. Reformatted package information in Section 6. Added footnotes for automotive grade parts in Table 8: Order codes. 21-Feb-2008 7 Corrected SO-8 package mechanical data. Dimension E in drawing was marked H in table. Corrected revision history (revision 6 is of January 2008, not January 2007). 03-Dec-2009 8 Added pin description on cover page. 16-Feb-2012 9 Removed LM2903YD order code from Table 8. 05-Dec-2012 10 Added the DFN8 package Small modifications to Figure 2 and Table 1. 17-Jan-2008 Changes Doc ID 2470 Rev 10 17/18 LM2903 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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