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MA820

Magnetic Angular Position Sensor

The MA820 is a magnetic angular position sensor from Monolithic Power Systems. View the full MA820 datasheet below including key specifications.

MA820 shares its datasheet with MA730, whose page lists every part number it covers.

Official MA820 datasheet (PDF) — the source this page was extracted from.

Manufacturer

Monolithic Power Systems

Category

Sensors

Package

QFN-16 3x3mm

MA820 Key Specifications

ParameterValue
Latency10 µs typical
Sample Rate1 µs
Package Size3x3mm QFN-16
ABZ Resolution1 to 64 PPR
Rotation Speed0 to over 100 kRPM
Supply Voltage3.3V
Output InterfaceABZ incremental (quadrature A/B with Z index)
Magnetic Field Range30 mT to 150 mT
Typical Supply Current12 mA
Configuration InterfaceSPI with non-volatile memory
Effective Angle Resolution8 bit
Operating Temperature Range-40°C to +125°C

MA820 Overview

Part: MagAlpha family — MPS (Monolithic Power Systems)

Type: Magnetic Angle Position Sensors

Description: The MPS MagAlpha family offers magnetic angle position sensors utilizing the patented SpinAxis™ Hall measurement technique for instantaneous digital angle position, supporting rotation speeds from zero to over 100kRPM with resolutions up to 14 bits.

Operating Conditions:

  • Supply voltage: 3.3V
  • Operating temperature: -40 to +125°C
  • Magnetic field range: 15mT to 150mT (working range)

Absolute Maximum Ratings:

Key Specs:

  • Sample rate: up to 1μs
  • Latency: 10μs at 100kRPM
  • Resolution: up to 14 bits
  • Rotation speed: 0 to >100kRPM
  • Power consumption: 12mA (at 3.3V)
  • MA8xx family effective angle resolution: 8 bit
  • MA1xx/MA3xx family effective angle resolution: 9-14 bit (MA330), 12 bit (MA102, MA302, MA310)
  • MA850 PWM frequency: ~50kHz

Features:

  • Instantaneous angle sensing
  • High resolution up to 14 bits
  • Support for end-of-shaft and side-of-shaft topologies
  • Low power consumption
  • Non-volatile memory for configuration parameters
  • Programmable threshold magnetic field strength detection (push-button functionality)
  • SPI/SSI digital angle output
  • ABZ incremental interface
  • PWM output
  • UVW commutation signals with programmable pole pairs
  • Magnetic field strength monitoring for diagnostics
  • Selectable digital filter bandwidths (MA330)

Applications:

  • Rotary Human-Machine-Interface (HMI) applications (e.g., rotary knobs)
  • Brushless DC (BLDC) motor control
  • Servo motor position control
  • Process automation
  • Robotics
  • Automotive actuators
  • Power tools

Package:

  • QFN-16 (3x3mm)

MA820 Features

  • SPI interface for direct digital angle reading and chip configuration
  • ABZ encoder interface with up to 1024 pulses per channel per turn
  • UVW commutation interface with pole pair emulation from a simple two-pole magnet
  • Magnetic field strength monitoring for diagnostics
  • One-time programmable or reprogrammable non-volatile memory for storage of zero position and other programmable chip configuration parameters

Figure 8: MagAlpha MA3xx Block Diagram

MA820 Applications

An example of a complete miniature servo drive implementation using the MA302 is shown in Figure 9.

Figure 9: Servo Motor Example using the MA3xx Sensor

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part NumberManufacturerPackage
MA102Monolithic Power SystemsQFN-16 (3x3mm)
MA302Monolithic Power SystemsQFN-16 3x3mm
MA310Monolithic Power SystemsQFN-16 3x3mm
MA330Monolithic Power SystemsQFN-16 3x3mm
MA730Monolithic Power SystemsQFN-16 (3x3mm)
MA800Monolithic Power SystemsQFN-16 3x3mm
MA850Monolithic Power SystemsQFN-16 3x3mm

Other Sensors

  • ICM-20948 – TDK InvenSense, 9-axis MotionTracking device
  • MPU-6050 – TDK InvenSense, 6-Axis MEMS IMU
  • MAX30102 – Analog Devices, Pulse Oximetry and Heart-Rate Monitor Module
  • MPU-9250 – TDK InvenSense, 9-Axis MotionTracking IMU
  • ZMPT101B – Zmpt, Voltage Sensor Module
  • AD5941 – Analog Devices, High Precision, Impedance, and Electrochemical Front End
  • AH3722 – Diodes Incorporated, Hall-effect latch IC
  • AH3722-P-A – Diodes Incorporated, Hall-effect latch IC

All Sensors datasheetsAll Monolithic Power Systems datasheets (40)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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