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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 negative rail 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 the negative rail even though operated from a single power supply voltage. Inverting input 1 Non-inverting input 1 Inverting input 2 Non-inverting input 2 December 2007 Rev 5 1/13 www.st.com 13 Schematic diagram LM2901 1 Schematic diagram Figure 1. Schematic diagram (1/4 LM2901) 2/13 LM2901 Absolute maximum ratings and operating conditions 2 Absolute maximum ratings and operating conditions Table 1. Symbol VCC Vid Vin Supply voltage Differential input voltage Input voltage Output short-circuit to ground (1) Thermal resistance junction to ambient(2) Rthja DIP14 SO-14 TSSOP14 Thermal resistance junction to case(2) Rthjc DIP14 SO-14 TSSOP14 Maximum junction temperature Storage temperature range HBM: human body model ESD MM: machine model(4) CDM: charged device model + Absolute maximum ratings Parameter Value 18 to 36 36 -0.3 to +36 Unit V V V 80 105 100 33 31 32 +150 -65 to +150 500 100 (5) C/W Tj Tstg C C V V V (3) 1500 1. Short-circuits 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. Short-circuits can cause excessive heating. Destructive dissipation can result from simultaneous shortcircuits on all amplifiers. All values are typical. 3. Human body model: A 100pF capacitor is charged to the specified voltage, then discharged through a 1.5k 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 200pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5). 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 VCC Vicm Toper Operating conditions Parameter Supply voltage Common mode input voltage range Tmin Tamb Tmax Operating free-air temperature range Value 2 to 32 1 to 16 0 to (VCC+ -1.5) 0 to (VCC+ -2) -40 to +125 Unit V V C 3/13 Electrical characteristics LM2901 3 Electrical characteristics Table 3. Symbol Vio Iio Iib Avd Electrical characteristics at VCC+ = 5V, VCC- = GND, Tamb = 25C (unless otherwise specified) Parameter Input offset voltage (1) Tmin Tamb Tmax Input offset current Tmin Tamb Tmax Input bias current (II+ or II-) (2) 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 Differential input voltage(3) Low level output voltage Vid = -1V, Isink = 4mA Tmin Tamb Tmax High level output current (VCC =Vo =30V, Vid = 1V) Tmin Tamb Tmax Output sink current (Vid = -1V,Vo = 1.5V) Small signal response time(4) (RL = 5.1k connected to VCC+) Large signal response time(5) 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 500 1 ns s 6 250 25 200 25 5 Min. Typ. 1 Max. 7 15 50 150 250 400 Unit mV nA nA V/mV ICC Vid VOL 1.1 1.3 2 2.5 VCC+ 400 700 mA V mV IOH Isink tres 0.1 1 16 1.3 nA A mA s trel 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 there is no loading charge on the reference of input lines. 3. The response time specified is for a 100mV input step with 5mV overdrive. 4. 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). 5. Maximum values are guaranteed by design. 4/13 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 5/13 Typical applications schematics LM2901 4 Figure 7. Typical applications schematics 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 6/13 LM2901 Typical applications schematics 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 7/13 Typical applications schematics LM2901 Figure 19. Time delay generator Figure 20. Two-decade high-frequency VCO 8/13 LM2901 Package information 5 Package information 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. 5.1 DIP14 package information Figure 21. DIP14 package mechanical drawing Table 4. DIP14 package mechanical data Dimensions Ref. Min. a1 B b b1 D E e e3 F I L Z 1.27 0.51 1.39 Millimeters Typ. Max. Min. 0.020 1.65 0.5 0.25 20 8.5 2.54 15.24 7.1 5.1 3.3 2.54 0.050 0.055 Inches Typ. Max. 0.065 0.020 0.010 0.787 0.335 0.100 0.600 0.280 0.201 0.130 0.100 9/13 Package information LM2901 5.2 SO-14 package information Figure 22. SO-14 package mechanical drawing Table 5. SO-14 package mechanical data Dimensions Ref. Min. 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 0.35 0.19 0.1 Millimeters Typ. Max. 1.75 0.2 1.65 0.46 0.25 0.5 45 (typ.) 8.75 6.2 1.27 7.62 4.0 5.3 1.27 0.68 8 (max.) 0.149 0.181 0.019 0.336 0.228 0.013 0.007 0.003 Min. Inches Typ. Max. 0.068 0.007 0.064 0.018 0.010 0.019 0.344 0.244 0.050 0.300 0.157 0.208 0.050 0.026 10/13 LM2901 Package information 5.3 TSSOP14 package information Figure 23. TSSOP14 package mechanical drawing A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 Table 6. TSSOP14 package mechanical data Dimensions Ref. Min. A A1 A2 b c D E E1 e K L1 0 0.45 0.05 0.8 0.19 0.09 4.9 6.2 4.3 Millimeters Typ. Max. 1.2 0.15 1 1.05 0.30 0.20 5 6.4 4.4 0.65 BSC 8 0.60 0.75 0 0.018 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 Min. Inches Typ. Max. 0.047 0.004 0.039 0.006 0.041 0.012 0.0089 0.197 0.252 0.173 0.0256 BSC 8 0.024 0.030 0.201 0.260 0.176 11/13 Ordering information LM2901 6 Ordering information Table 7. Order codes Temperature range Package DIP14 SO-14 -40C to +125C TSSOP14 SO-14 (Automotive grade) TSSOP14 (Automotive grade) Packing Tube Tube or tape & reel 2901 Tape & reel Tube or tape & reel 2901Y Tape & reel Marking LM2901N Order code LM2901N LM2901D LM2901DT LM2901PT LM2901YD(1) LM2901YDT(1) LM2901YPT(2) 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. 7 Revision history Table 8. 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. Added Rthja and Rthjc parameters to Table 1: Absolute maximum ratings. Added footnotes for ESD parameters. Removed Vicm parameter from electrical characteristics in Table 3. Reformatted package information in Section 5. Added footnotes for automotive grade parts in Table 7: Order codes. Changes Oct-2005 18-Jul-2006 3 4 19-Dec-2007 5 12/13 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. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST'S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER'S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. (c) 2007 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 13/13 |
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