SNOS739E July   1997  – November 2025 LMC6762

PRODUCTION DATA  

  1.   1
  2. 1 FEATURES
  3. 2 APPLICATIONS
  4. 3 DESCRIPTION
  5. 4 Electrostatic Discharge Caution
  6. 5 Absolute Maximum Ratings #GUID-F10E56BA-F805-4EB7-A2D2-0BF8E26DF15C/SNOS7392194 #GUID-F10E56BA-F805-4EB7-A2D2-0BF8E26DF15C/SNOS7394381
  7. 6 Operating Ratings #GUID-2904839E-20BA-4119-B36D-EECFE39579F2/SNOS7390787
  8. 7 2.7V Electrical Characteristics
  9. 8 5.0V and 15.0V Electrical Characteristics
  10. 9 AC Electrical Characteristics
  11. 10Typical Characteristics
  12. 11Application Hints
    1. 11.1 Input Common-Mode Voltage Range
    2. 11.2 Low Voltage Operation
    3. 11.3 Output Short Circuit Current
    4. 11.4 Hysteresis
    5. 11.5 Spice Macromodel
    6. 11.6 Typical Applications
      1. 11.6.1 One-Shot Multivibrator
      2. 11.6.2 Bi-Stable Multivibrator
      3. 11.6.3 Zero Crossing Detector
      4. 11.6.4 Oscillator
  13. 12Revision History

11.6.3 Zero Crossing Detector

LMC6762 Zero Crossing DetectorFigure 11-6 Zero Crossing Detector

A voltage divider of R4 and R5 establishes a reference voltage V1 at the non-inverting input. By making the series resistance of R1 and R2 equal to R5, the comparator will switch when VIN = 0. Diode D1 insures that V3 never drops below −0.7V. The voltage divider of R2 and R3 then prevents V2 from going below ground. A small amount of hysteresis is setup to ensure rapid output voltage transitions.