Microelectronics

Delphi's family of sensors and integrated circuits (ICs) provides customers the advantage of innovative product technology. The Low-g Accelerometer is an all-silicon linear accelerometer. The single crystal silicon IC provides a rugged, accurate sensor that is being developed for automotive, industrial, and consumer applications. The sensor module integrates a low-cost sensor with a compensating IC into a small outline package. The capacitive sensing element is manufactured using Delphi’s Micro Electro Mechanical (MEMS) technology, while the signal conditioning IC is fabricated using Delphi’s high-voltage Complementary Metal Oxide Semiconductor (CMOS) process.

The Low-g accelerometer operates using a 5V supply. Applied acceleration causes deflection of the internal proofmass. The position of the proofmass is capacitively detected by the compensator IC and converted to a DC output voltage. It can also be set to perform a self test, which simulates actual acceleration.

Benefits

• Bi-directional self test
• Range tailored to customer needs
• Tailored cost-effective solutions
• Low offset error
• Small package size

Features

• Programmable ranges from ± 0.75g to ± 3g
• DC to 250Hz response
• Start up time < 25msec
• Output ratiometric to supply
• Single crystal silicon element
• Capacitive sensing
• Low noise
• Analog output

Possible Applications

• Vehicle stability control
• Vehicle rollover detection
• Vehicle theft detection (inclination)
• Vehicle dynamics (lateral or longitudinal)
• Virtual reality electronics
• Consumer electronics
• Industrial controls
• Robotics

Module Performance Data