MA782GGU Datasheet | Monolithic Power Systems

DESCRIPTION The MA782 detects the absolute angular position of a permanent magnet, such as a diametrically magnetized cylinder on a rotating shaft. With its power cycling ability, the MA782 can be optimized for applications that require low average power. The timing can be controlled by an on-chip clock or via an external controller. Flags can detect a definable amount of angle change. The device supports a wide range of magnetic field strengths and spatial configurations. Both end-of-shaft and off-axis (side-shaft mounting) configurations are supported. The MA782 features magnetic field strength detection with configurable thresholds to sense the magnet position relative to the sensor for certain functions (e.g. sensing the axial movements or for diagnostics). On-chip non-volatile memory (NVM) stores configuration parameters, including the reference zero angle position, the power cycling parameters, the filter window affecting the output resolution, and magnetic field detection thresholds. The MA782 is available in a QFN-14 (2mmx2mm) package FEATURES - 8-Bit to 12-Bit Resolution Absolute Contactless Angle Encoder - <0.5µA Current Consumption in Idle Mode - 10m A Current Consumption in Active Mode - Angle Detection Interrupt to Wake the System - Magnetic Field Strength Alarm - Supports On-Axis and Off-Axis Operation - Serial Peripheral Interface (SPI) - 3.3V Supply - -40°C to +125°C Operating Temperature - Available in a QFN-14 (2mmx2mm) Package APPLICATIONS - Portable Devices - Tablet Foldable Displays - Mobile Flip Phones - E-Bike Shifters and Throttle Control - Smart Door Locks - Low-Power Rotary HMI Dials or Push- Buttons All MPS parts are lead-free, halogen-free, and adhere to the Ro HS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are trademarks of Monolithic Power Systems, Inc. or its subsidiaries. TYPICAL APPLICATION 1µF Supply: 3.3V Example: 100µA Average Controller...