Monolithic Power Systems Inc. MA330GQ-P

Overview

MA330GQ-P from Monolithic Power Systems is a 14-bit contactless magnetic angle sensor with integrated ABZ quadrature and UVW commutation outputs, designed for high-speed rotor position sensing in BLDC motors. It delivers absolute angle measurement at up to 60,000 rpm, supports programmable filter windows (64 µs to 16 ms), and features on-chip non-volatile memory for zero-angle calibration, ABZ pulse-per-turn configuration (1–1024), and UVW pole-pair emulation (1–8). Its QFN-16 package enables compact integration in motor control modules.

For engineers reviewing the MA330GQ-P datasheet, MA330GQ-P pinout, MA330GQ-P application, or MA330GQ-P equivalent, key selection criteria include its dual-output architecture (ABZ + UVW), field-strength diagnostic capability (MGL/MGH flags), SPI-configurable resolution (9–14 bit effective), and operation across -40°C to +125°C - all critical for servo drive and motor commutation design validation.

Technical Context

The MA330GQ-P uses Spinaxis™ phase-detection architecture to directly digitize magnetic field direction without arctangent computation or closed-loop interpolation, enabling open-loop 1 MHz front-end sampling. Its time-to-digital converter outputs raw angle data processed by a configurable digital low-pass filter with cutoff frequencies ranging from 23 Hz (16 ms window) to 6 kHz (64 µs window).

It supports both end-of-shaft and side-shaft magnet mounting via programmable bias current trimming (BCT/ETX/ETY) and field-ratio compensation, while magnetic field strength detection (30–60 mT operating range) enables axial movement sensing and fault diagnostics through MGL/MGH digital outputs.

Key Specifications

Pinout & Package

MA330GQ-P is housed in a thermally enhanced QFN-16 (3 mm × 3 mm) package with exposed pad recommended for grounding. Pin functions are validated per MPS MA330 Rev. 1.1 datasheet.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar magnetic angle sensor applications.

Compared with AS5048B-HTSP and TLE5012BE1000, the MA330GQ-P uniquely integrates ABZ, UVW, and field diagnostics in one QFN-16 package - reducing component count, simplifying layout, and enabling condition-based maintenance without external circuitry.

Availability

MA330GQ-P is available at Aetrix Electronics and suitable for brushless DC motor servo drives, robotics joint actuation, and industrial pump/fan control requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MA330GQ-P includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management and sensing solutions, with a focus on energy efficiency and miniaturization.

The MagAlpha® family, including the MA330GQ-P, is engineered specifically for contactless angular position sensing in motor control systems - emphasizing robustness, configurability, and seamless integration into BLDC and servo drive architectures.

FAQ

What is the maximum mechanical speed supported by the MA330GQ-P?

The MA330GQ-P supports rotor speeds up to 60,000 rpm while maintaining accurate absolute angle measurement. This capability is enabled by its 1 MHz front-end sampling rate and low-latency digital filtering - ensuring reliable position tracking even in high-speed spindle and turbine applications without aliasing or missed updates.

Can the MA330GQ-P operate with magnets weaker than 30 mT?

Yes, the MA330GQ-P can function with magnetic fields below 30 mT, but linearity and resolution performance fall outside guaranteed specifications. The datasheet specifies 30–60 mT as the operational range for ≤1.1° INL and ≥13-bit effective resolution; operation outside this range requires system-level characterization and may necessitate increased filter window size to maintain stability.

How is zero-angle calibration performed on the MA330GQ-P?

Zero-angle calibration is stored in on-chip non-volatile memory using registers 0 and 1 (Z[15:0]). The value is the complementary angle of the desired zero position (e.g., 20° → Z = 61895). Calibration is executed via SPI write command to these registers, and persists across power cycles - eliminating need for runtime host MCU intervention or external EEPROM.

Does the MA330GQ-P require external decoupling capacitors?

Yes, a 1 µF ceramic capacitor must be placed close to the VDD pin with a low-impedance path to GND, as specified in the datasheet. This decoupling ensures stable internal voltage regulation and minimizes noise-induced errors in high-speed magnetic field sampling - particularly critical during rapid rotor acceleration or EMI-heavy motor drive environments.

What is the purpose of the TEST pin (Pin 10)?

Pin 10 (TEST) is a factory test terminal that must be connected to GND in all production designs. Leaving it floating or applying voltage violates the absolute maximum ratings and may cause undefined behavior or permanent damage. This requirement is explicitly stated in the "PIN FUNCTIONS" section of the MA330 Rev. 1.1 datasheet.

How does side-shaft mounting affect MA330GQ-P accuracy, and how is it corrected?

Side-shaft mounting introduces nonlinearity due to tangential/radial field ratio mismatch. The MA330GQ-P compensates using programmable bias current trimming (BCT, ETX, ETY registers), which adjusts Hall sensor offsets to linearize the output. This correction is calibrated once per mechanical setup and stored in NVM - no runtime computation or host processor involvement is required.