Datasheet

ManualsBrandsSTMICROELECTRONICS ManualsLinear ICsLinear IC - Comparator Multi-purpose CMOS, MOS, Open collector, TTL SO 8

This is information on a product in full production.

November 2013 DocID2470 Rev 11 1/19

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. (I

= 4 mA)

• Differential input voltage range equal to the

supply voltage

• TTL, DTL, ECL, MOS, CMOS compatible

outputs

• Automotive qualification

Summary of content (19 pages)

PAGE 1
LM2903 Low-power dual voltage comparator Datasheet - production data • TTL, DTL, ECL, MOS, CMOS compatible outputs • Automotive qualification N DIP8 (plastic package) D SO8 (plastic micropackage) Related products • See LM2903W for similar device with higher ESD performances • See LM2903H for similar device with operating temperature up to 150 °C Description P TSSOP8 (thin shrink small outline package) S MiniSO8 (plastic micropackage) This device consists of two independent lowpower voltage comparators
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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 . . . . . . . . . . . . . . . . . . . . . . . . .
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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.
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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 ±18 or 36 ±36 Rthja Thermal resistance junction to ambient DIP8 SO8 TSSOP8 MiniSO8 DFN8 2x2 mm Rthjc Thermal resistance junction to case(2) DIP8 SO8 TSSOP8 MiniSO8 DFN8 2x2 mm Tstg ESD V -0.
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LM2903 4 Electrical characteristics Electrical characteristics Table 3. VCC+ = 5 V, VCC- = GND, Tamb = 25°C (unless otherwise specified) Symbol Parameter Min. Typ. Max.
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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.
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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.
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Typical application schematics LM2903 Figure 14. Low frequency op- amp with offset adjust Figure 15. Zero crossing detector (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 VCC Figure 17. Split-supply applications - zero crossing detector (12 V) 15 V 10 kΩ 2RS V(ref) high 1/ 2 LM2903 5.
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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.
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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.
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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.
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Package information 6.2 LM2903 SO8 package information Figure 23. SO8 package mechanical drawing Table 5. SO8 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.
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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.
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Package information 6.4 LM2903 MiniSO8 package information Figure 25. MiniSO8 package mechanical drawing Table 7. MiniSO8 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Max. Min. Typ. 1.1 A1 0 A2 0.75 b Max. 0.043 0.15 0 0.95 0.030 0.22 0.40 0.009 0.016 c 0.08 0.23 0.003 0.009 D 2.80 3.00 3.20 0.11 0.118 0.126 E 4.65 4.90 5.15 0.183 0.193 0.203 E1 2.80 3.00 3.10 0.11 0.118 0.122 e L 0.85 0.65 0.40 0.60 0.006 0.033 0.80 0.016 0.
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LM2903 6.5 Package information DFN8 2x2 package mechanical data Figure 26. DFN8 2x2x0.6 mm package mechanical drawing (pitch 0.5 mm) $06 B9 Table 8. DFN8 2x2x0.6 mm package mechanical data (pitch 0.5 mm) Dimensions Ref. A Millimeters Inches 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.
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Package information LM2903 Figure 27. DFN8 2x2x0.
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LM2903 7 Ordering information Ordering information Table 9. Order codes Order code Temperature range Package Packing Marking LM2903N DIP8 Tube LM2903N LM2903D/DT SO8 Tube or tape and reel 2903 LM2903YDT(1) LM2903PT -40 °C to +125 °C SO8 (automotive grade) 2903Y TSSOP8 2903 LM2903YPT(2) TSSOP8 (automotive grade) LM2903YST(1) MiniSO8 (automotive grade) K419 DFN8 2x2 mm K1Z LM2903Q2T Tape and reel 2903Y 1.
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Revision history 8 LM2903 Revision history Table 10. 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 9: Order codes.
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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.