LM2903 LOW POWER DUAL VOLTAGE COMPARATORS . . .. . . . . WIDE SINGLE SUPPLYVOLTAGE RANGE OR DUAL SUPPLIES +2V TO +36V OR 1V TO 18V VERY LOW SUPPLYCURRENT (0.4mA) INDEPENDENT OF SUPPLY VOLTAGE (1 mW/comparator at +5V) LOW INPUT BIAS CURRENT : 25nA TYP LOW INPUT OFFSET CURRENT : 5nA TYP INPUT COMMON-MODE VOLTAGE RANGE INCLUDES GROUND LOW OUTPUT SATURATION VOLTAGE : 250mV TYP. (IO = 4mA) DIFFERENTIAL INPUT VOLTAGE RANGE EQUAL TO THE SUPPLY VOLTAGE TTL, DTL, ECL, MOS, CMOS COMPATIBLE OUTPUTS N DIP8 (Plastic Package) D SO8 (Plastic Micropackage) P TSSOP8 (Thin Shrink Small Outline Package) 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. These comparators also have a unique characteris-tic in the fact that the input common-mode voltage range includes ground even though operated from a single power supply voltage. ORDER CODES Part Number Temperature Range -40, +125oC LM2903 Package N * D * P * Example : LM2903N PIN CONNECTIONS (top view) 1 2 - 3 + 4 April 2000 8 7 - 6 + 5 1 2 3 4 5 6 7 8 - Output 1 Inverting input 1 Non-inverting input 1 VCCNon-inverting input 2 Inverting input 2 Output 2 VCC+ 1/10 LM2903 SCHEMATIC DIAGRAM (1/2 LM2903) V CC 100 A 3.5 A 3.5 A 100 A Non-inve rting Input V V CC V CC O Inverting Input V CC ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter Supply Voltage Vid Differential Input Voltage Vi Input Voltage Output Short-circuit to Ground - (note 1) Unit V !36 V -0.3 to +36 V Infinite Ptot Power Dissipation Toper Operating Free-air TemperatureRange -40 to +125 o Tstg Storage Temperature Range -65 to +150 o Not es : 2/10 Value 18 or 36 830 mW C C 1. Short -ci rcuit f rom t he output to V CC + can cause excessi ve heat ing and event ual dest ruct i on. The maxi mum out put + current is approxi matel y 20mA , i ndependent of t he magni t ude of V C C . LM2903 ELECTRICAL CHARACTERISTICS + - o VCC = +5V, VCC = 0V, Tamb = 25 C (unless otherwise specified) Symbol Vio Parameter Input Offset Voltage - (note 2) Tamb = +25oC Tmin. Tamb Tmax. Min. Typ. Max. 1 7 15 Iib Input Bias Current - (note 3) Tamb = +25oC Tmin. Tamb Tmax. 25 250 400 Iio Input Offset Current Tamb = +25oC Tmin. Tamb Tmax. 5 50 150 Avd Large Signal Voltage Gain VCC = 15V, RL = 15k, Vo = 1 to 11V ICC Supply Current (all comparators) VCC = 5V, no load VCC = 30V, no load Vicm Input Commono Mode Voltage Range (VCC = 30V) - (note 4) Tamb = +25 C Tmin. Tamb Tmax. Vid Differential Input Voltage - (note 6) Isink Output Sink Current (Vid = -1V, VO = 1.5V) V OL IOH Low Level Output Voltage (Vid = -1V, Isink = 4mA) Tamb = 25oC Tmin. Tamb Tmax. nA nA V/mV 25 200 mA 0.4 1 1 2.5 + 0 0 V VCC +-1.5 V CC -2 VCC+ V mA 6 16 mV 250 High Level Output Current (Vid = 1V, VCC = VO = 30V) Tamb = 25oC Tmin. Tamb Tmax. 0.1 tre Small Signal Response Time (RL = 5.1k to VCC+) - (note 5) 1.3 trel Large Signal Response Time - (note 7) TTL Input (Vref = +1.4 V, RL = 5.1k to VCC+) Output Signal at 50% of final value Output Signal at 95% of final value Note s : Unit mV 400 700 1 nA A s 500 1 ns s 2. A t output swi tch point , V O # 1. 4V, R S = 0 wi th V C C + f rom 5V to 30V and over the f ull i nput common-mode range (0V t o V C C + 1. 5V). 3. T he di rect i on of t he i nput current i s out of the IC due t o the P NP i nput stage. T his current is essent i al l y const ant , i ndependent of t he st ate of the out put , so no l oadi ng charge exi sts on the ref erence or i nput li nes. 4. T he input common-mode vol tage of eit her i nput si gnal vol t age shoul d not be al lowed t o go negat i ve by more t han 0.3V . T he upper end of t he common-mode vol tage range is V C C + -1. 5V, but eit her or bot h input s can go t o +30V wi thout damage. 5. T he response t i me specif ied i s for a 100mV input st ep wi th 5mV overdri ve. 6. P osi ti ve excursi ons of i nput vol t age may exceed t he power suppl y l evel. A s l ong as the other vol tage remains wit hi n the common-mode range the comparator wil l provi de a proper output stat e. The l ow i nput vol tage stat e must not be less than -0. 3V (or 0. 3V bel ow t he negati ve power suppl y, i f used). 7. Maxi mum val ues are guaranteed by desi gn. 3/10 LM2903 SUPPLY CURRENT versus SUPPLY VOLTAGE INPUT CURRENT versus SUPPLY VOLTAGE 80 Tamb = -55 C INPUT CURRENT (nA) Vi = 0V Tamb = 0 C 0.8 Ta mb = +25 C 0.6 Ta m b = +70 C 0.4 Ta mb = +125 C 0.2 R = 0 10 20 30 S UP P LY VOLTAGE (V) 1 10 0 Tamb = +125 C -1 Tamb = -55 C 10 -2 10 -3 Tamb = +25 C 10 -2 10 -1 10 0 20 Ta mb = +125 C Ta mb = +70 C 0 10 20 30 S UP P LY VOLTAGE (V) 10 1 10 2 OUTP UT SINK CURRENT (mA) 6 5 4 3 2 1 0 0 -50 -100 Input overdrive : 5mV OUTPUT VOLTAGE (V) INPUT VOLTAGE (mV) 6 Input overdrive : 100mV 5 4 5mV 3 2 20mV 1 0 100 Ta mb = +25 C 50 0 0 0.5 1 1.5 TIME (s ) 5V 5.1k 20mV eI eo 100mV Tamb = +25 C 0 0.5 RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES - POSITIVE TRANSITION 4/10 40 RESPONSE TIME FOR VARIOUS INPUT OVERDRIVES - NEGATIVE TRANSITION Out of sa tura tion 10 Ta mb = +25 C 40 OUTPUT VOLTAGE (V) SATURATION VOLTAGE (V) 10 Ta mb = -55 C i Ta mb = 0 C 40 OUTPUT SATURATION VOLTAGE versus OUTPUT CURRENT R = 10 9 60 INPUT VOLTAGE (mV) SUPPLY CURRENT (mA) 1 5V 5.1 k eI eo 2 1 1.5 TIME (s ) 2 LM2903 TYPICAL APPLICATIONS BASIC COMPARATOR DRIVING CMOS 5V VCC = 5V 15k +V(ref) 100k +V(ref) 1/2 LM2903 VO -V(ref) DRIVING TTL 1/2 LM2903 & -V(ref) LOW FREQUENCY OP AMP 5V 5V 15k 10k 1/2 LM290 3 +V(re f) ~ 1/2 LM2903 & -V(re f) & eI eo 100k 1k 0.5F A V = 100 LOW FREQUENCY OP AMP TRANSDUCER AMPLIFIER (e o = 0V for e I = 0V) 5V 5V Magne tic pick-up 10k 3k 15k 1/2 LM2903 ~ eI 0.5 F eo 20M 1 00k 1k 1/2 LM2903 2N 2222 eo 10k A V = 100 5/10 LM2903 LOW FREQUENCY OP AMP WITH OFFSET ADJUST ZERO CROSSING DETECTOR (SINGLE POWER SUPPLY) 5V 5V 100k Offs e t Adjus t 5V Rs eI 100k 1M 1M R2 RI 15k 1/2 LM2903 ~ 5.1 k eI 5.1k 100k 5.1k 1/2 LM2903 2N 2222 1N4148 0.5 F R1 100k 1k 20M 10k eo TWO DECADES HIGH FREQUENCY VCO VCC 100k 500pF 3k VCC 3k 5.1k 1/2 LM2903 Fre que nc y con trol volta ge input vcontrol 100k 0.01 F 0.1 F 20k 1/2 LM2903 Outp ut 1 VCC /2 Output 2 20k 50k VCC /2 1/2 LM2903 VCC = +3 0V +2 50mV Vcontrol +5 0V 700 Hz fo 100kHz LIMIT COMPARATOR CRYSTAL CONTROLLED OSCILLATOR VCC = 15V VCC (12V) 2R S V(re f) h igh Lamp VCC 0.1 F 1/2 LM2903 I ~ 2R S V(re f) low 6/10 2k 100k 1/2 LM2903 RS e 200k 10k 1/2 LM2903 f = 100kHz 2N 2222 200k eo 0 LM2903 SPLIT-SUPPLY APPLICATIONS ZERO CROSSING DETECTOR COMPARATOR WITH A NEGATIVE REFERENCE 15V 15V 5.1k 1/2 LM2903 e 5.1k 1/2 LM2903 eo e I ~ eo I ~ 5V 15V 15V 7/10 LM2903 PACKAGE MECHANICAL DATA 8 PINS -PLASTIC DIP Dimensions A a1 B b b1 D E e e3 e4 F i L Z 8/10 Min. Millimeters Typ. 3.32 0.51 1.15 0.356 0.204 Max. 1.65 0.55 0.304 10.92 9.75 7.95 Min. 0.020 0.045 0.014 0.008 Max. 0.065 0.022 0.012 0.430 0.384 0.313 2.54 7.62 7.62 3.18 Inches Typ. 0.131 0.100 0.300 0.300 6.6 5.08 3.81 1.52 0.125 0260 0.200 0.150 0.060 LM2903 PACKAGE MECHANICAL DATA 8 PINS -PLASTIC MICROPACKAGE (SO) Dimensions A a1 a2 a3 b b1 C c1 D E e e3 F L M S Min. Millimeters Typ. 0.1 0.65 0.35 0.19 0.25 Max. 1.75 0.25 1.65 0.85 0.48 0.25 0.5 Min. Inches Typ. 0.026 0.014 0.007 0.010 Max. 0.069 0.010 0.065 0.033 0.019 0.010 0.020 0.189 0.228 0.197 0.244 0.004 45 o (typ.) 4.8 5.8 5.0 6.2 1.27 3.81 3.8 0.4 0.050 0.150 4.0 1.27 0.6 0.150 0.016 0.157 0.050 0.024 o 8 (max.) 9/10 LM2903 PACKAGE MECHANICAL DATA 8 PINS -THIN SHRINK SMALL OUTLINE PACKAGE k 0,25 mm c .010 inch C SEATING PLANE E1 L1 L GAGE PLANE A E A2 e aaa 1 8 C b D 5 4 A1 PIN 1 IDENTIFICATION Dim. Millimeters Min. Typ. A A1 0.05 A2 0.80 b 0.19 c 0.09 D 2.90 E E1 1.00 3.00 Inches Max. 1.20 Min. 0.15 0.01 1.05 0.031 0.30 0.007 0.20 0.003 3.10 0.114 6.40 4.30 e 4.40 0o l 0.50 0.60 Max. 0.05 0.006 0.039 0.041 0.15 0.012 0.118 0.122 0.252 4.50 0.169 0.65 k Typ. 0.173 0.177 0.025 8o 0o 0.75 0.09 8o 0.0236 0.030 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. 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