AN ANALOG/DIGITAL INTEGRATED CIRCUIT INTERFACE FOR AUTOMOTIVE SENSORS

A unique and very versatile circuit is described which converts changes in physical parameters such as capacitance, resistance, and inductance into a proportional pulse width modulated digital signal. This circuit, in combination with sensors which utilize these physical parameters in their operation, can be used to provide digital inputs to microprocessors and other digital control and diagnostic systems. Advantages of this particular circuit are its potential for high reliability, accuracy, and low cost. Several applications are described and an integrated circuit version of the circuit is discussed.

• Supplemental Notes:
  • From: Sensors for electronic systems, 43-46, 1976. (SAE SP-404).
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Rabe, P R
  • Greenstein, E
  • Hile, J W
• Publication Date: 1976

Media Info

• Pagination: 4 p.

Subject/Index Terms

• TRT Terms: Accuracy; Analog to digital converters; Capacitance; Costs; Inductance; Integrated circuits; Pulse duration modulation; Reliability; Sensors
• Old TRIS Terms: Resistance
• Subject Areas: Finance; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00139967
• Record Type: Publication
• Report/Paper Numbers: SAE #760069
• Files: TRIS
• Created Date: Dec 15 1976 12:00AM