The integration enables Allegro to combine high-voltage wafer processes with high-precision MR sensors for use in automotive environments. The result is a family of highly reliable, innovative, small form factor monolithic ICs that easily fit into industry standard IC packages and meet the requirements of automotive electronics.
The semiconductor manufacturer has developed AGMR technology to meet the tough requirements of the automotive industry under the hood. AGMR technology is thermally stable up to over 150°C, even in the presence of large magnetic fields. With this platform, Allegro intends to expand its product offering in the areas of speed, current and angle measurement.
“The Hall effect technology meets the needs of many applications in our target markets, but there are certain applications, especially in ADAS and high efficiency vehicles, where xMR technology offers more elegant solutions,” said Michael Doogue, Allegro’s Vice President of Business Development. “In these applications, Allegro xMR ICs provide more accurate measurement data. They also enable a more favorable mechanical placement of a sensor IC within a mechanical system as well as smaller form factor solutions with lower overall costs”.
The first generation AxMR ring magnet speed sensor ICs are already in production at a leading Tier 1 automotive supplier of wheel speed sensors. These ICs are based on Allegro’s patented signal processing algorithms to meet the requirements of standard and direction detection wheel speed sensors. GMR technology enables low jitter speed measurements that Allegro says are not possible with Hall effect ICs.