Rotary and linear sensor family expands

Jon Lawson

Melexis has launched the MLX90373, part of the Triaxis rotary and linear Hall Effect position sensor family and the first Triaxis angle sensor to offer support for the PSI5 (Peripheral Sensor Interface 5) interface.

The PSI5 is an open standard based on the technology used in millions of air bag safety systems. This highly responsive technology delivers a data bit rate of 125kbit/s over a 2-wire unshielded cable, making it suitable for a wide number of automotive sensing applications now applied to safety and comfort, such as steering and chassis ride height measurement. The 2-wire implementation makes it simpler and fundamentally less costly to deploy than other forms of serial interface that require 3- or 4-wire cabling.

The sensor offers both rotary and linear position sensing in a robust design that simplifies the magnetics’ design for the manufacturer. The extended ambient temperature of -40 to +125 degrees Centigrade, on-chip diagnostic features and a gateway input for external sensors are combined in a design that offers all the benefits of the PSI5 interface, including flexibility when using the four time-slots available, along with provision for additional external sensor data to be added to the payload.

As with all Triaxis sensors, it has been developed to support PCB-less mounting and it also meets the requirements for ISO 26262 ASIL C (SEOoC) and is offered in a dual-die, fully redundant version in a TSSOP-16 package. The option of choosing the PSI5 interface means the Triaxis rotary and linear Hall Effect sensor family now covers PSI5, PWM, Analog and SENT interfaces.