LM2903H Low power dual voltage comparators 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 ground ■ 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 SO-8 (Plastic micropackage) Wafer form Description This device consists of two independent low power voltage comparators designed specifically to operate from a single supply over a wide range of voltages. Operation from split power supplies is also possible. Pin connections (top view) 1 These comparators also have a unique characteristic in that the input common-mode voltage range includes ground even though operated from a single power supply voltage. 2 - 3 + 4 March 2008 Rev 3 8 7 - 6 + 5 1/9 www.st.com 9 Absolute maximum ratings and operating conditions 1 LM2903H Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings (AMR) Symbol Parameter VCC Supply voltage Vid Differential input voltage Vin Input voltage Output short-circuit to ground (1) Value Unit ±18 or 36 V ±36 V -0.3 to +36 V 20 mA 125 °C/W (2) Rthja Thermal resistance junction to ambient (SO-8) Rthjc Thermal resistance junction to case (2) (SO-8) 40 °C/W Maximum junction temperature 150 °C 800 200 1500 V -65 to +150 °C Tj (3) ESD HBM: human body model MM: machine model (4) CDM: charged device model (5) Tstg Storage temperature range + 1. Short-circuit 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+. 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. Operating conditions Symbol Parameter VCC+ Supply voltage Toper Operating free-air temperature range Vicm Input common mode voltage range(VCC Tamb = +25°C Tmin ≤ Tamb ≤ Tmax =30V)(1) Value Unit 2 to 36 V -40 to +150 °C 0 to VCC+-1.5 0 to VCC+-2 V 1. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3 V. The upper end of the common-mode voltage range is VCC+ –1.5 V, but either or both inputs can go to +30 V without damage. 2/9 LM2903H 2 Circuit schematics Circuit schematics Figure 1. Schematic diagram (1/2 LM2903) VCC+ 3.5µA 100µA 3.5µA 100µA Non-Inverting Input Vo VCC- VCC- Inverting Input VCC- Figure 2. Pad locations Name OUT 2 year E- (2) Vcc + GND y OUT 1 E- (1) Pad placement Pad dimensions E+ (2) X Y X Y GND 830 415 90 90 E+1 750 100 90 90 E-1 400 100 90 90 OUT1 100 100 90 90 Vcc + 65 415 90 90 OUT2 90 730 90 90 E-2 410 720 90 90 E+2 760 720 90 90 E+ (1) Die id. x All dimensions are specified in micrometer (um). 3/9 Electrical characteristics LM2903H 3 Electrical characteristics Table 3. VCC+ = 5V, VCC- = GND, Tamb = 25°C (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit Vio Input offset voltage (1) Tmin ≤ Tamb ≤ Tmax 1 7 15 mV Iio Input offset current Tmin ≤ Tamb ≤ Tmax 5 50 150 nA Iib Input bias current (2) Tmin ≤ Tamb ≤ Tmax 25 250 400 nA AVD Large signal voltage gain (VCC+ = 15V,RL=15kΩ, Vo=1 to 11V) ICC Supply current (all comparators) VCC += 5V, no load VCC+ = 30V, no load Vid Differential input voltage (3) VOL Low level output voltage (Vid = -1V, Isink = 4mA) Tmin ≤ Tamb ≤ Tmax 250 IOH High level output current (VCC+ =Vo =30V, Vid = 1V) Tmin ≤ Tamb ≤ Tmax 0.1 Isink Output sink current (Vid = -1V,Vo = 1.5V) Tmin ≤ Tamb ≤ Tmax tre Small signal response time (4) (RL = 5.1kΩ to VCC+) 25 200 0.4 1 V/mV 1 2.5 mA VCC+ V 400 800 mV 1 6 2 16 nA µA mA 1.3 µs (5) trel 1. Large signal response time TTL input (Vref = +1.4 V, RL=5.1kΩ to VCC+) Output signal at 50% of final value Output signal at 95% of final value 500 1 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 there is no load charge 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 will provide 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. 4/9 ns µs LM2903H Figure 3. Electrical characteristics Supply current vs. supply voltage Figure 4. 50 0.8 TAMB = - 40 °C TAMB = + 25 °C 0.6 0.4 TAMB = + 125 °C 0.2 0.0 INPUT BIAS CURRENT (nA) SUPPLY CURRENT (mA) 1.0 Input current vs. supply voltage 10 TAMB = - 40 °C 30 20 TAMB = + 25 °C TAMB = + 125 °C 20 30 40 0 0 10 SUPPLY VOLTAGE (V) Output saturation voltage vs. output current (VCC=5V) OUTPUT VOLTAGE (V) Figure 6. OUTPUT SATURATION VOLTAGE (V) 10 1 TAMB = + 150 °C TAMB = + 125 °C 0.1 TAMB = + 25 °C TAMB = - 40 °C 0.01 0.1 1 10 100 OUTPUT SINK CURRENT (mA) INPUT VOLTAGE (mV) OUTPUT VOLTAGE (V) Figure 7. 20 30 40 SUPPLY VOLTAGE (V) INPUT VOLTAGE (mV) Figure 5. TAMB = + 150 °C 10 TAMB = + 150 °C 0 40 6 5 4 3 2 1 0 0 -50 -100 Response time for various input overdrives - negative transition Input overdrive : 5mV 5V 5.1kW 20mV eI eo 100mV Tamb= +25°C 0 0.5 1 1.5 TIME (ms) 2 Response time for various input overdrives - positive transition 6 Input overdrive : 100mV 5 4 5mV 3 2 20mV 1 0 100 Tamb = +25°C 50 0 0 0.5 1 1.5 TIME (ms) 5V 5.1kW eI eo 2 5/9 Package information 4 LM2903H Package information In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. 6/9 LM2903H Package information Figure 8. SO-8 package mechanical drawing Table 4. SO-8 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Inches Max. Min. Typ. 1.75 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 0.25 Max. 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 k 1° 8° 1° 8° ccc 0.10 0.004 7/9 Ordering information 5 LM2903H Ordering information Table 5. Order codes Order code Temperature range Package Packing Marking SO-8 Tube or Tape & reel 2903H SO-8 (Automotive grade ) Tube or Tape & reel 2903HY JLM2903H- E6D1 Wafer LM2903HD LM2903HDT -40°C, +150°C LM2903HYD(1) LM2903HYDT(1) 1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or equivalent. 6 Revision history Table 6. 8/9 Document revision history Date Revision Changes 25-Sep-2003 1 Initial release. 23-Aug-2005 2 PPAP references inserted in the datasheet, see order codes table. 27-Mar-2008 3 Added ESD parameters in AMR table. Updated document format. LM2903H 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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