LM2901.fm

Document overview

  • Manufacturer or author: STMICROELECTRONICS
  • PDF pages: 20

Technical content

Datasheet sections

  • 1 Pin connection and schematic diagram
  • 2 Absolute maximum ratings and operating conditions
  • 3 Electrical characteristics
  • 4 Typical application schematics
  • 5 Package information
  • 5.1 QFN16 3 x 3 package information
  • 5.2 QFN16 3 x 3 wettable flank package information
  • 5.3 SO-14 package information
  • 5.4 TSSOP14 package information
  • 6 Ordering information
  • 7 Revision history

Features

  • Wide single supply voltage range or dual supplies for all devices: +2 V to +36 V or ±1 V to ±18 V
  • Very low supply current (1.1 mA) independent of supply voltage (1.4 mW/comparator at +5 V)
  • Low input bias current: 25 nA typ.
  • Low input offset current: ±5 nA typ.
  • Input common-mode voltage range includes negative rail
  • Low output saturation voltage: 250 mV typ. (I O = 4 mA)
  • 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, which 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. 76623 4)1[ ZHWWDEOHIODQN

1 Pin connection and schematic diagram

Figure 1. Pin connections (top view) Figure 2. Schematic diagram

2 Absolute maximum ratings and operating conditions

Table 1. Absolute maximum ratings

  1. Short-circuits from the output to V CC
  2. Short-circuits can cause excessive heating. Destr uctive dissipation can result from simultaneous sho rt-

circuits on all amplifiers. All values are typical.

  1. Human body model: a 100 pF capacitor is charged t o the specified voltage, then discharged through a

while the other pins are floating.

  1. Machine model: a 200 pF capacitor is charged to t he specified voltage, then discharged directly betw een

connected pin combinations while the other pins are floating.

  1. Charged device model: all pins and the package ar e charged together to the specified voltage and the n

discharged directly to the ground through only one pin. This is done for all pins. Table 2. Operating conditions

3 Electrical characteristics

Table 3. Electrical characteristics at VCC

  1. At output switch point, V O ≈ 1.4 V, R S = 0 with V CC
  2. The direction of the input current is out of the IC due to the PNP input stage. This current is esse ntially
  3. The response time specified is for a 100 mV input step with 5 mV overdrive.
  4. Positive excursions of input voltage may exceed t he power supply level. As long as the other voltage

voltage state must not be less than –0.3 V (or 0.3 V below the negative power supply, if used).

  1. Maximum values are guaranteed by design.

4 Typical application schematics

Figure 8. Basic comparator Figure 9. Driving CMOS Figure 10. Driving TTL Figure 11. Low frequency op a mp Figure 12. Low frequency op amp with boost Figure 13 . Transducer amplifier

Figure 20. Time delay generator Figure 21. Two-decade high-frequency VCO

700 Hz f 100 kHzo

5 Package information

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com . ECOPACK is an ST trademark.

5.1 QFN16 3 x 3 package information

Figure 22. QFN16 3 x 3 mm package mechanical drawing

Table 4. QFN16 3 x 3 mm package mechanical data (pitch 0.5 mm)

Figure 23. QFN16 3 x 3 mm footprint recommendation

5.2 QFN16 3 x 3 wettable flank package information

Figure 24. QFN16 3 x 3 mm wettable flank drawing outline

Figure 25. QFN16 3x3 wettable flank recommended footprint Table 5. QFN16 3x3 wettable flank mechanical data

5.3 SO-14 package information

Figure 26. SO-14 package mechanical drawing Table 6. SO-14 package mechanical data

5.4 TSSOP14 package information

Figure 27. TSSOP14 package mechanical drawing Table 7. TSSOP14 package mechanical data

6 Ordering information

Table 8. Order codes

  1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening accordi ng to AEC Q001

7 Revision history

Table 9. Document revision history 01-Jan-2002 1 Initial release. 2 - ESD protection inserted in Table 1 on page 3. – – PPAP part number added in table Order codes on p age 1. – – Formatting changes throughout. 18-Jul-2006 4 ESD HBM value corrected in Table 1 on p age 3. ratings. Added footnotes for ESD parameters. icm parameter from electrical characteristics in Table 3. Reformatted package information in Section 5. Added footnotes for automotive grade parts in Table 8: Order codes. Updated package information in Chapter 5: Package information. Removed note 2 under Table 8: Order codes. 06-Feb-2012 7 Added QFN16 3 x 3 package in Chapter 5. Removed LM2901YD order code from Table 8. Updated figure on the cover page. Added new LM2901Q5T order code in Table 8 and new Section 5.2. 20-Nov-2023 10 Updated Table 8: Order codes .