Automotive hall sensor rotary encoder

This is an incremental rotary encoder that uses contactless magnetic sensing to detect rotational speed and direction.  The two Hall Effect sensors measure the 66-pole ring magnet and output two signals in quadrature.  This automotive-qualified solution is a low-cost and far more reliable alternative to conventional mechanical contact-based encoders, as it uses solid-state sensing that is immune to physical wear, dirt, corrosion, and RF noise.

Features:
Extremely simple, reliable, and low-cost
Greater design flexibility and ESD immunity, over mechanical encoder modules
66-pole magnet provides 132 detections per 360° of rotation (1 per 2.7°)
>20kHz Hall Effect sensor bandwidth provides low 15µs latency
Digital sensing and digital signaling offer noise immunity
Automotive qualified to AEC-Q100

Parts Include:
CD4511B CMOS BCD-to-7-Segment LED Latch Decoder Drivers
DRV5013-Q1 Automotive Digital-Latch Hall Effect Sensor
TPS61097A-33 0.9Vin, 3.3Vout Boost Converter with Bypass Switch – 5nA Shutdown Current 

Learn more by downloading the reference design below