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) 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. 14 Output 3 Output 1 2 13 Output 4 + CC 3 12 V CC V 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. December 2007 Output 2 1 Rev 5 Inverting input 1 4 11 Non-inverting input 4 Non-inverting input 1 5 10 Inverting input 4 Inverting input 2 6 9 Non-inverting input 3 Non-inverting input 2 7 8 Inverting input 3 1/13 www.st.com 13 Schematic diagram 1 Schematic diagram Figure 1. 2/13 LM2901 Schematic diagram (1/4 LM2901) LM2901 2 Absolute maximum ratings and operating conditions Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings Symbol Parameter VCC Supply voltage Vid Differential input voltage Vin Input voltage Value Unit ±18 to 36 V ±36 V -0.3 to +36 V Output short-circuit to ground (1) Thermal resistance junction to ambient(2) Rthja 80 105 100 DIP14 SO-14 TSSOP14 °C/W Thermal resistance junction to case(2) Rthjc Tj Tstg 33 31 32 DIP14 SO-14 TSSOP14 Maximum junction temperature Storage temperature range HBM: human body model ESD (3) MM: machine model(4) CDM: charged device model (5) +150 °C -65 to +150 °C 500 V 100 V 1500 V + 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 1.5kΩ 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 < 5Ω). 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 VCC Vicm Toper Parameter Supply voltage Common mode input voltage range Tmin ≤ Tamb ≤ Tmax Operating free-air temperature range Value Unit 2 to 32 ±1 to ±16 V 0 to (VCC+ -1.5) 0 to (VCC+ -2) V -40 to +125 °C 3/13 Electrical characteristics 3 LM2901 Electrical characteristics Table 3. Symbol Vio Iio Iib Avd Electrical characteristics at VCC+ = 5V, VCC- = GND, Tamb = 25°C (unless otherwise specified) Parameter Min. Input offset voltage (1) Typ. Max. Unit 1 7 15 mV 5 50 150 nA 25 250 400 nA 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=15kΩ, Vo=1 to 11V) 25 200 V/mV Supply current (all comparators) ICC VCC = +5V, no load VCC = +30V, no load Vid Differential input voltage(3) VOL Low level output voltage Vid = -1V, Isink = 4mA 1.1 1.3 250 Tmin ≤ Tamb ≤ Tmax IOH High level output current (VCC =Vo =30V, Vid = 1V) tres trel 1. VCC+ V 400 700 mV 1 Output sink current (Vid = -1V,Vo = 1.5V) Small signal response mA 0.1 Tmin ≤ Tamb ≤ Tmax Isink 2 2.5 6 time(4) (RL = 5.1kΩ connected to VCC+) nA µA 16 mA 1.3 µs Large signal response time(5) 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 ns µs 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 Typical applications schematics Figure 7. Basic comparator Figure 8. Figure 9. Driving TTL Figure 10. Low frequency op-amp Figure 11. Low frequency op-amp 6/13 Driving CMOS Figure 12. Transducer amplifier 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 Figure 19. Time delay generator Figure 20. Two-decade high-frequency VCO 8/13 LM2901 LM2901 5 Package information Package information In order to meet environmental requirements, STMicroelectronics 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 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. Millimeters Min. a1 0.51 B 1.39 Typ. Inches Max. Min. Typ. Max. 0.020 1.65 0.055 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 15.24 0.600 F 7.1 0.280 I 5.1 0.201 L Z 3.3 1.27 0.130 2.54 0.050 0.100 9/13 Package information 5.2 LM2901 SO-14 package information Figure 22. SO-14 package mechanical drawing Table 5. SO-14 package mechanical data Dimensions Ref. Millimeters Min. Typ. A a1 Inches Max. Typ. 1.75 0.1 0.2 a2 Max. 0.068 0.003 0.007 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45° (typ.) D 8.55 8.75 0.336 0.344 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 7.62 0.300 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 10/13 Min. 0.68 0.026 8° (max.) LM2901 5.3 Package information TSSOP14 package information Figure 23. TSSOP14 package mechanical drawing A A2 A1 K e b L c E D E1 PIN 1 IDENTIFICATION 1 Table 6. TSSOP14 package mechanical data Dimensions Ref. Millimeters Min. Typ. A Inches Max. Min. Typ. 1.2 A1 0.05 A2 0.8 b Max. 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 D 4.9 5 5.1 0.193 0.197 0.201 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 e 1 0.65 BSC K 0° L1 0.45 0.60 0.0256 BSC 8° 0° 0.75 0.018 8° 0.024 0.030 11/13 Ordering information 6 LM2901 Ordering information Table 7. Order codes Order code Temperature range Package Packing Marking LM2901N DIP14 Tube LM2901N LM2901D LM2901DT SO-14 Tube or tape & reel LM2901PT TSSOP14 Tape & reel LM2901YD(1) LM2901YDT(1) SO-14 (Automotive grade) Tube or tape & reel LM2901YPT(2) TSSOP14 (Automotive grade) Tape & reel 2901 -40°C to +125°C 2901Y 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. Document revision history Date Revision Jan-2002 1 Initial release. Jul-2005 2 1 - PPAP references inserted in the datasheet see Table : Order codes on page 1. 2 - ESD protection inserted in Table 1 on page 3. Oct-2005 3 The following changes were made in this revision: – PPAP part number added in table Order codes on page 1. – Formatting changes throughout. 18-Jul-2006 4 ESD HBM value corrected in Table 1 on page 3. 5 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. 19-Dec-2007 12/13 Changes 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. 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