LM2901 STMICROELECTRONICS | Alldatasheet

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Technical content

Low Power Quad Voltage Comparator ■ 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. (I O = 4mA) ■ Differential input voltage range equal to the supply voltage ■ TTL, DTL, ECL, MOS, CMOS compatible outputs

Description

This device consists of four independent precision voltage comparators. All these comparators were 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 . Order Codes N DIP14 (Plastic Package) D SO-14 (Plastic Micropackage) P TSSOP14 (Thin Shrink Small Outline Package) Part Number Temperature Range Package Packaging Marking LM2901N -40°C, +125°C DIP14 T ube LM2901N LM2901D/LM2901DT SO-14 Tube or Tape & Reel 2901 LM2901PT TSSOP14 (Thin Shrink Outline Package) T ape & Reel 2901 LM2901YD/YDT SO-14 (automotive grade level) Tube or Tape & Reel 2901Y

1 Absolute Maximum Ratings

Table 1. Key parameters and their absolute maximum ratings Table 2. Operating conditions

  1. Short-circuit from the output to V cc
  2. Pd is calculated with T amb = +25°C, Tj = +150°C and
  3. Human body model, 100pF discharged through a 1.5k Ω 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 Ω), into pin to pin of device.

2 Typical Application Schematics

Figure 1. Schematic diagram (1/4 LM2901) Figure 2. Pin connection (top view)

3 Electrical Characteristics

Table 3. V CC

  1. At output switch point, VO ≈ 1.4V, RS = 0 with VCC+ from 5V to 30V, and over the full input common-mode
  2. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially
  3. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more
  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
  6. Maximum values are guaranteed by design.

4 Typical Applications

Figure 8. Basic comparator Figure 9. Driving CMOS Figure 10. Driving TTL Figure 11. Low frequency op-amp Figure 12. Low frequency op-amp Figure 13. Transducer amplifier

LM2901 PACKAGE MECHANICAL DATA

5 PACKAGE MECHANICAL DATA

5.1 DIP14 package

DIM. mm. inch a1 0.51 0.020 B 1.39 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 3.3 0.130 Z 1.27 2.54 0.050 0.100 Plastic DIP-14 MECHANICAL DATA P001A

PACKAGE MECHANICAL DATA LM2901

5.2 SO-14 package

DIM. mm. inch A 1.75 0.068 a1 0.1 0.2 0.003 0.007 a2 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 0.68 0.026 S˚ ( m a x . ) SO-14 MECHANICAL DATA PO13G

LM2901 PACKAGE MECHANICAL DATA

5.3 TSSOP14 package

DIM. mm. inch A 1.2 0.047 b 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 e 0.65 BSC 0.0256 BSC K0 ˚ 8 ˚0 ˚ 8 ˚ TSSOP14 MECHANICAL DATA c Eb A2A D PIN 1 IDENTIFICATION LKe 0080337D

6 Revision History

Jan. 2002 1 Initial release. July 2005 2 1 - PPAP references inserted in the datasheet see Table : Order Codes on page 1. 2 - ESD protection inserted in T able 1 on page 2. 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 p ublication 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 STMicr oelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners © 2005 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Ital y - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America