MA736 Contactless Digital Angle Sensor QFN-14

MA736 Contactless Digital Angle Sensor QFN-14

The MA736 is a MagAlpha digital angle sensor that detects the absolute angular position of a permanent magnet, typically a diametrically magnetized cylinder on a rotating shaft.

Key Specifications

Features

• Configurable 8-Bit to 12.5-Bit ±3σ Resolution Absolute Angle Encoder
• 3µs of Latency at Constant Rotation Speed
• SPI Serial Interface for Digital Angle Readout and Chip Configuration
• Configurable Magnetic Field Strength Detection for Diagnostic Checks
• Non-Volatile Memory (NVM) Read/Write Command Extends Memory Life
• 3.3V, 11mA Supply Current
• -40°C to +125°C Operating Temperature
• 0rmp to 60,000rpm Rotation
• Interrupt Out when Angle Change Is Detected
• Available in an Ultra-Small UTQFN-14 (2mmx2mm) Package

Typical Application Circuit

Applications

• General-Purpose Angle Measurement
• High-Resolution Angle Encoders
• Automotive Position Sensing

Design Notes

• Mechanical tolerance between the magnet and the sensing element translates directly into angle error; budget it before choosing the resolution.
• Match the output interface (SPI, ABZ, PWM or analog) to the MCU timing, including the latency the control loop can tolerate.
• Offset and sensitivity drift over temperature are systematic — a single-point calibration at room temperature will not hold over the operating range.
• Differential or digital outputs survive electrically noisy motor environments far better than single-ended analog ones.

Common Questions