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| LM2901 Low power quad voltage comparator Features Wide single supply voltage range or dual supplies for all devices: +2V to +36V or 1V to 18V Very low supply current (1.1mA) independent of supply voltage (1.4mW/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 DIP14 (Plastic Package) D SO-14 (Plastic Micropackage) P TSSOP14 (Thin Shrink Small Outline Package) Pin connections (top view) Output 2 1 Output 1 2 V + CC 3 4 5 6 7 14 13 12 11 10 9 8 Output 3 Output 4 V CC Non-inverting input 4 Inverting input 4 Non-inverting input 3 Inverting input 3 Description This device consists of four independent precision voltage comparators. All these comparators are 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 characteristic in that the input common-mode voltage range includes ground even though operated from a single power supply voltage. Inverting input 1 Non-inverting input 1 Inverting input 2 Non-inverting input 2 Order codes Part number LM2901N LM2901D/LM2901DT LM2901PT LM2901YD/YDT LM2901YPT -40C, +125C Temperature range Package DIP14 SO-14 TSSOP14 (Thin shrink outline package) SO-14 (automotive grade level) TSSOP14 (automotive grade level) Packing Tube Tube or tape & reel Tape & reel Tube or tape & reel Tape & reel 2901 Marking LM2901N 2901Y July 2006 Rev 4 1/16 www.st.com 16 Contents LM2901 Contents 1 2 3 4 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4.1 4.2 4.3 DIP14 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 SO-14 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 TSSOP14 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 LM2901 Absolute maximum ratings and operating conditions 1 Absolute maximum ratings and operating conditions Table 1. Symbol VCC VID VI Supply voltage Differential input voltage Input voltage Output short-circuit to ground (1) Power dissipation (2) Pd DIP14 SO-14 TSSOP14 Junction temperature Storage temperature range HBM: human body model(3) ESD MM: machine model(4) 1500 830 710 +150 -65 to +150 500 100 1500 mW Absolute maximum ratings Parameter Value 18 to 36 36 -0.3 to +36 Unit V V V TJ Tstg C C V V V CDM: charged device model 1. Short-circuit from the output to VCC+ can cause excessive heating and eventual destruction. The maximum output current is approximately 20mA, independent of the magnitude of VCC+ . 2. Pd is calculated with Tamb = +25C, Tj = +150C and Rthja = 80C/W for DIP14 package, Rthja = 150C/W for SO-14 package, Rthja = 175C/W for TSSOP14 package. 3. Human body model, 100pF discharged through a 1.5k resistor into pin of device. 4. Machine model ESD, a 200pF cap is charged to the specified voltage, then discharged directly into the IC with no external series resistor (internal resistor < 5), into pin to pin of device. Table 2. Symbol VCC Vicm Toper Operating conditions Parameter Supply voltage Common mode input voltage range Operating free-air temperature range Value 2 to 32 1 to 16 0 to (VCC+ -1.5) -40 to +125 Unit V V C 3/16 Schematic diagram LM2901 2 Schematic diagram Figure 1. Schematic diagram (1/4 LM2901) 4/16 LM2901 Electrical characteristics 3 Electrical characteristics Table 3. Symbol Electrical characteristics at VCC+ = 5V, Vcc- = GND, Tamb = 25C (unless otherwise specified) Parameter Input offset voltage (1) Min. Typ. Max. Unit Vio Tamb = +25C Tmin Tamb Tmax Input offset current Tamb = +25C Tmin Tamb Tmax Input bias current (II+ or II-) (2) Tamb = 2.5V Tmin Tamb Tmax Large signal voltage gain (Vcc = 15V,RL=15k, Vo=1 to 11V) Supply current (all comparators) VCC = +5V, no load VCC = +30V, no load Input common mode voltage range (Vcc= 30V)(3) Tamb = +25C Tmin Tamb Tmax Differential input voltage(4) Low level output voltage 0 0 25 1 7 15 mV Iio 5 50 150 nA Iib 25 250 400 nA Avd 200 V/mV Icc 1.1 1.3 2 2.5 mA Vicm VCC+-1.5 VCC+-2 VCC+ V Vid V VOL Vid = -1V, Isink = 4mA Tamb = +25C Tmin Tamb Tmax High level output current (VCC =Vo =30V, Vid = 1V) Tamb = +25C Tmin Tamb Tmax Output sink current (Vid = -1V,Vo = 1.5V) Small signal response time(5) (RL = 5.1k connected to VCC+) Large signal response time(6) 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 6 250 400 700 mV Ioh 0.1 1 16 1.3 nA A mA s Isink tre trel 500 1 ns s 1. At output switch point, VO 1.4V, RS = 0 with VCC+ from 5V to 30V, and over the full input common-mode range (0V to VCC+ -1.5V). 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. 5/16 Electrical characteristics LM2901 3. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode voltage range is VCC+ -1.5V, but either or both inputs can go to +30V without damage. 4. The response time specified is for a 100mV input step with 5mV overdrive. 5. 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 -0.3V (or 0.3V below the negative power supply, if used). 6. Maximum values are guaranteed by design. 6/16 LM2901 Electrical characteristics Figure 2. Supply current vs. supply voltage Figure 3. Input current vs. supply voltage Figure 4. Output saturation voltage vs. output current Figure 5. Response time for various input overdrives - negative transition Figure 6. Response time for various input overdrives - positive transition 7/16 Electrical characteristics LM2901 Typical applications schematics Figure 7. Basic comparator Figure 8. Driving CMOS Figure 9. Driving TTL Figure 10. Low frequency op-amp Figure 11. Low frequency op-amp Figure 12. Transducer amplifier 8/16 LM2901 Electrical characteristics Figure 13. Low frequency op- amp with offset adjust Figure 14. Zero crossing detector (single power supply) Figure 15. Limit comparator Figure 16. Split-supply applications - zero crossing detector Figure 17. Crystal controlled oscillator Figure 18. Comparator with a negative reference 9/16 Electrical characteristics LM2901 Figure 19. Time delay generator Figure 20. Two-decade high-frequency VCO 10/16 LM2901 Package mechanical data 4 Package mechanical data In order to meet environmental requirements, STMicroelectronics offers these devices in ECOPACK(R) 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 STMicroelectronics trademark. ECOPACK specifications are available at: www.st.com. 11/16 Package mechanical data LM2901 4.1 DIP14 package Plastic DIP-14 MECHANICAL DATA mm. DIM. MIN. a1 B b b1 D E e e3 F I L Z 1.27 3.3 2.54 0.050 8.5 2.54 15.24 7.1 5.1 0.130 0.100 0.51 1.39 0.5 0.25 20 0.335 0.100 0.600 0.280 0.201 1.65 TYP MAX. MIN. 0.020 0.055 0.020 0.010 0.787 0.065 TYP. MAX. inch P001A 12/16 LM2901 Package mechanical data 4.2 SO-14 package SO-14 MECHANICAL DATA DIM. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 8.55 5.8 1.27 7.62 4.0 5.3 1.27 0.68 8 (max.) 0.149 0.181 0.019 8.75 6.2 0.35 0.19 0.5 45 (typ.) 0.336 0.228 0.050 0.300 0.157 0.208 0.050 0.026 0.344 0.244 0.1 mm. MIN. TYP MAX. 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.003 MIN. inch TYP. MAX. 0.068 0.007 0.064 0.018 0.010 PO13G 13/16 Package mechanical data LM2901 4.3 TSSOP14 package TSSOP14 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.45 0.60 0.05 0.8 0.19 0.09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8 0.75 0 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0089 0.201 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080337D 14/16 LM2901 Revision history 5 Revision history Table 4. Date Jan-2002 Jul-2005 Document revision history Revision 1 2 Initial release. 1 - PPAP references inserted in the datasheet see Table : Order codes on page 1. 2 - ESD protection inserted in Table 1 on page 3. The following changes were made in this revision: - PPAP part number added in table Order codes on page 1. - Formatting changes throughout. ESD HBM value corrected in Table 1 on page 3. Changes Oct-2005 18-Jul-2006 3 4 15/16 LM2901 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. 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