Automotive high-precision analog AMR angle sensor with integrated turns counter

The TMAG6181-Q1 is a

high-precision angle sensor based on Anisotropic Magneto Resistive (AMR) technology. The

device features integrated signal conditioning amplifiers and provides differential sine and

cosine analog outputs related to the direction of the applied in-plane magnetic field. This

device also features two independent Hall sensors at X and Y axes that are used to keep

track of rotations.

The TMAG6181-Q1 features a wide operating magnetic field (20mT – 1T) that enables

flexible mechanical placements as well as low latency (< 2µs) outputs for high-speed

applications like rotor position sensing. The fast start-up time (<40µs) enables low

power applications by using a sleep pin that enables the device to enter two low power

modes: sleep mode and a low power turns counting mode. An integrated turns counter keeps

track of the number of rotations, and the turns counter value is transmitted using PWM on

the TURNS pin.

The TMAG6181-Q1 offers extensive diagnostics and is designed for Functional Safety

applications. The device performs consistently across a wide ambient temperature range of

–40°C to 150°C with minimal thermal drift and lifetime errors.