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) 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. Output 2 1 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 ground even though operated from a single power supply voltage. 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 Order codes Part number Temperature range LM2901N LM2901D/LM2901DT LM2901PT LM2901YD/YDT LM2901YPT July 2006 -40°C, +125°C Package Packing Marking DIP14 Tube LM2901N SO-14 Tube or tape & reel TSSOP14 (Thin shrink outline package) Tape & reel SO-14 (automotive grade level) Tube or tape & reel TSSOP14 (automotive grade level) Tape & reel Rev 4 2901 2901Y 1/16 www.st.com 16 Contents LM2901 Contents 1 Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3 2 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 2/16 4.1 DIP14 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 4.2 SO-14 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.3 TSSOP14 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 LM2901 1 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 VI Input voltage Value Unit ±18 to 36 V ±36 V -0.3 to +36 V Output short-circuit to ground (1) Power dissipation (2) Pd TJ Tstg ESD 1500 830 710 DIP14 SO-14 TSSOP14 Junction temperature mW +150 °C Storage temperature range -65 to +150 °C HBM: human body model(3) 500 V 100 V 1500 V MM: machine model(4) 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 = +25°C, Tj = +150°C and Rthja = 80°C/W for DIP14 package, Rthja = 150°C/W for SO-14 package, Rthja = 175°C/W for TSSOP14 package. 3. Human body model, 100pF discharged through a 1.5kΩ 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 < 5Ω), into pin to pin of device. Table 2. Operating conditions Symbol Parameter VCC Supply voltage Vicm Common mode input voltage range Toper Operating free-air temperature range Value Unit 2 to 32 ±1 to ±16 V 0 to (VCC+ -1.5) V -40 to +125 °C 3/16 Schematic diagram 2 Schematic diagram Figure 1. 4/16 LM2901 Schematic diagram (1/4 LM2901) LM2901 3 Electrical characteristics Electrical characteristics Table 3. Symbol Electrical characteristics at VCC+ = 5V, Vcc- = GND, Tamb = 25°C (unless otherwise specified) Parameter Min. Typ. Max. Unit 1 7 15 mV 5 50 150 nA 25 250 400 nA Input offset voltage (1) Vio Tamb = +25°C Tmin ≤ Tamb ≤ Tmax Input offset current Iio Tamb = +25°C Tmin ≤ Tamb ≤ Tmax Input bias current (II+ or II-) (2) Iib Avd Tamb = 2.5V Tmin ≤ Tamb ≤ Tmax Large signal voltage gain (Vcc = 15V,RL=15kΩ, Vo=1 to 11V) 25 V/mV 200 Supply current (all comparators) Icc Vicm Vid 1.1 1.3 VCC = +5V, no load VCC = +30V, no load 2 2.5 mA VCC+-1.5 VCC+-2 V VCC+ V Input common mode voltage range (Vcc= 30V)(3) 0 0 Tamb = +25°C Tmin ≤ Tamb ≤ Tmax Differential input voltage(4) Low level output voltage VOL Vid = -1V, Isink = 4mA Tamb = +25°C Tmin ≤ Tamb ≤ Tmax 250 400 700 mV High level output current Ioh Isink tre (VCC =Vo =30V, Vid = 1V) Tamb = +25°C Tmin ≤ Tamb ≤ Tmax Output sink current (Vid = -1V,Vo = 1.5V) Small signal response 0.1 1 6 16 mA time(5) (RL = 5.1kΩ connected to VCC+) nA µA µs 1.3 Large signal response time(6) trel 1. 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 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. Figure 9. Driving TTL Figure 10. Low frequency op-amp Figure 11. Low frequency op-amp Figure 12. Transducer amplifier 8/16 Driving CMOS 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 Figure 19. Time delay generator Figure 20. Two-decade high-frequency VCO 10/16 LM2901 LM2901 4 Package mechanical data Package mechanical data 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. 11/16 Package mechanical data 4.1 LM2901 DIP14 package Plastic DIP-14 MECHANICAL DATA mm. inch DIM. MIN. a1 0.51 B 1.39 TYP MAX. MIN. 1.65 0.055 TYP. 0.020 b 0.5 b1 0.25 D 0.065 0.020 0.010 20 E 0.787 8.5 0.335 e 2.54 0.100 e3 15.24 0.600 F 7.1 I Z 0.280 5.1 L 0.201 3.3 1.27 MAX. 0.130 2.54 0.050 0.100 P001A 12/16 LM2901 4.2 Package mechanical data SO-14 package SO-14 MECHANICAL DATA DIM. mm. MIN. TYP A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 0.003 0.007 0.46 0.013 0.018 0.25 0.007 1.65 b 0.35 b1 0.19 C MAX. 0.064 0.5 0.010 0.019 c1 45˚ (typ.) D 8.55 8.75 0.336 E 5.8 6.2 0.228 e 1.27 e3 0.344 0.244 0.050 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 0.68 0.026 8 ˚ (max.) PO13G 13/16 Package mechanical data 4.3 LM2901 TSSOP14 package TSSOP14 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 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 1 e 0.65 BSC K 0˚ L 0.45 A 0.60 0.0256 BSC 8˚ 0˚ 0.75 0.018 8˚ 0.024 0.030 A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080337D 14/16 LM2901 5 Revision history Revision history Table 4. Document revision history Date Revision Changes 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. 15/16 LM2901 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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