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Monolithic Power Systems Inc. MAQ470GQE-AEC1-P
- Part No.:
- MAQ470GQE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Angle, Linear Position Measuring
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
MAQ470GQE-AEC1-P.pdf
- Description:
- 12-BIT, AUTOMOTIVE ANGLE SENSOR
- Quantity:
- Payment:
- Shipping:
Inventory:2,319
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Product details
Overview
MAQ470GQE-AEC1-P from Monolithic Power Systems is a 12-bit automotive-grade absolute angle sensor using integrated Hall-effect sensing and Spinaxis™ phase-detection architecture to deliver accurate angular position measurement of diametrically magnetized rotating magnets. It supports end-of-shaft and side-shaft mounting, operates from -40°C to +150°C, delivers ABZ quadrature (programmable 1–256 pulses/turn), 12-bit PWM, and SPI/SSI serial outputs, and is qualified to AEC-Q100 Grade 0.
For engineers reviewing the MAQ470GQE-AEC1-P datasheet, MAQ470GQE-AEC1-P pinout, MAQ470GQE-AEC1-P application, or MAQ470GQE-AEC1-P equivalent, key selection considerations include its 11.8-bit typical effective resolution, 980 kHz refresh rate, magnetic field strength detection with programmable thresholds (MGL/MGH), on-chip NVM for zero-angle and ABZ configuration storage, and QFN-16 wettable flanks package for automotive ASIL-B–capable systems.
Technical Context
The MAQ470GQE-AEC1-P implements contactless angle sensing via integrated Hall devices and digitizes magnetic field direction using Spinaxis™ phase detection-eliminating arctangent computation or closed-loop interpolators. Its time-to-digital converter outputs raw angle data at 1 MHz in open-loop mode before digital filtering.
Digital conditioning includes a configurable low-pass filter (Fcutoff = 390 Hz) that maintains steady-state latency at 10 µs while preserving 11.0–12.8-bit effective resolution. Magnetic field diagnostics are enabled through two independent thresholds (MGHT/MGLT), each with ±5 mT accuracy and -600 ppm/°C drift, supporting axial movement detection and health monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Angle Resolution | 12-bit absolute output; 11.8-bit typical effective resolution (3σ noise) enabling ±0.02° repeatability at 25°C. |
| ABZ Output | Programmable 1–256 pulses per turn (PPT); 16 MHz update rate; 0.3° total jitter at 60 mT supports high-speed motor commutation. |
| PWM Output | 12-bit resolution at 240 Hz nominal frequency; enables direct analog-like interface without external DAC or microcontroller interpolation. |
| Operating Temp | -40°C to +150°C junction range; validated across full range with ≤1.16° INL error ensures reliability in engine bay or transmission control units. |
| Supply & Current | 3.3 V ±10%; 11.7 mA typical supply current at 25°C; stable operation down to 3.0 V supports automotive battery brownout conditions. |
| Magnetic Field Range | 30–60 mT operational range; functional below 30 mT with calibrated linearity loss; supports N35 Ø5×3 mm cylinder magnets with 1.5 mm air gap. |
| Interface Support | SPI Mode 0/3 (25 MHz max) with parity bit; SSI with dummy clock start; both support 16-bit angle readout and enable robust EMI-tolerant communication. |
Pinout & Package
MAQ470GQE-AEC1-P is housed in a QFN-16 (3 mm × 3 mm) package with wettable flanks for automated optical solder-joint inspection-critical for automotive production traceability and reliability assurance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SSD | Data out (SSI) | SSI slave data output; requires external pull-up; used exclusively for angle readout (no register access). |
| 2 A | Incremental output A | Quadrature channel A; open-drain compatible; supports differential ABZ decoding with B and Z pins. |
| 3 Z | Incremental index output | Single-pulse-per-revolution index signal; programmable pulse width via ILIP register for synchronization timing. |
| 4 MOSI | Data in (SPI) | SPI master-to-slave input; internal pull-down ensures defined state during reset or bus contention. |
| 5 CS | Chip select (SPI) | Active-low SPI enable; internal pull-up eliminates need for external resistor in most automotive MCU interfaces. |
| 6 B | Incremental output B | Quadrature channel B; 90° phase-shifted from A; enables direction detection and 4× interpolation. |
| 7 MISO | Data out (SPI) | SPI slave data output; internal pull-down active in high-impedance state prevents floating bus during idle. |
| 8 GND | Supply ground | Primary reference for all analog and digital circuits; must be connected to low-impedance PCB ground plane. |
| 9 PWM | PWM output | Push-pull 12-bit PWM signal; no external components required; directly drives MCU capture timers or analog comparators. |
| 10 TEST | Test pin | Factory test function; must be tied to GND in application; not user-accessible for configuration or diagnostics. |
| 11 MGL | Magnetic low flag | Open-drain digital output asserted when sensed field falls below MGLT threshold; used for magnet detachment or misalignment detection. |
| 12 SCLK | Clock (SPI) | SPI serial clock input; internal pull-down ensures safe default state during power-up or MCU reset. |
| 13 VDD | Supply 3.3 V | Single-supply input; requires local 1 µF ceramic decoupling capacitor placed within 2 mm of pin per layout guidelines. |
| 14 NC | No connection | Unbonded die pad; must remain unconnected and un-routed to avoid parasitic coupling or thermal stress. |
| 15 SSCK | Clock (SSI) | SSI slave clock input; low-idle protocol with mandatory dummy rising edge; incompatible with standard SSI masters. |
| 16 MGH | Magnetic high flag | Open-drain digital output asserted when sensed field exceeds MGHT threshold; enables over-field saturation detection. |
Key Features
| Feature | Design Value |
|---|---|
| Spinaxis™ Phase Detection | Direct magnetic field angle digitization without arctangent or feedback loops-reducing latency to 10 µs and eliminating interpolation errors. |
| On-Chip NVM Configuration | Stores zero-angle offset, ABZ PPT/ILIP settings, and MGLT/MGHT thresholds; retains values across power cycles without external EEPROM. |
| Programmable Magnetic Diagnostics | Independent high/low field flags (MGH/MGL) with ±5 mT accuracy and temperature-compensated thresholds enable real-time magnet health monitoring. |
| Wettable Flank QFN-16 | 3 mm × 3 mm package with exposed copper sidewalls allows automated AOI of solder joints-meeting IATF 16949 process validation requirements. |
| AEC-Q100 Grade 0 Qualification | Validated for 150°C junction operation with 0.7° INL at 25°C and 1.16° INL at 150°C-enabling use in transmission control, EPS, and turbocharger actuators. |
Applications
| Electric Power Steering (EPS) | Transmission Position Sensing |
|---|---|
|
Use Scenario: Real-time rotor angle feedback for brushless DC motor commutation in column-assist or rack-assist EPS modules. IC Role / Device Role / Timing Role: Absolute angle sensor providing 12-bit position data at 980 kHz refresh rate to MCU FOC algorithm; ABZ output synchronizes with motor pole pairs. Use Value: Enables <1.2° electrical angle error under 10,000 rpm shaft speed, reducing torque ripple and improving steering responsiveness. |
Use Scenario: Gear selector position detection in automatic transmissions with dual-clutch or planetary gear sets. IC Role / Device Role / Timing Role: Contactless angle transducer mounted off-axis to detect camshaft or shift drum rotation; PWM output feeds analog ADC for fail-safe redundancy. Use Value: Eliminates mechanical wear and contact bounce issues of potentiometers; MGL/MGH flags detect magnet displacement during vibration or thermal cycling. |
| Throttle Valve Control | Turbocharger VGT Actuation |
|
Use Scenario: Throttle plate angular position sensing in gasoline direct injection engines with wide-open-throttle response demands. IC Role / Device Role / Timing Role: Primary angle sensor feeding closed-loop PID controller; SPI interface provides diagnostic register reads (e.g., field strength, temperature drift) for OBD-II compliance. Use Value: Delivers 0.02° RMS noise and <12 ms power-up time-meeting ISO 26262 ASIL-B timing constraints for throttle actuator safety channels. |
Use Scenario: Variable geometry turbocharger (VGT) vane position feedback in diesel exhaust systems operating up to 150°C ambient. IC Role / Device Role / Timing Role: High-temp angle sensor mounted near turbine housing; side-shaft configuration accommodates compact packaging; ABZ output interfaces with dedicated motor driver IC. Use Value: Maintains ≤1.1° INL across -40°C to +150°C, enabling precise boost pressure control and reducing NOx emissions under transient load conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute angle sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMS AS5055A-BQFT | 12-bit resolution, SPI-only interface, no ABZ/PWM outputs; 3.3 V supply; -40°C to +125°C rating. | Lacks incremental and PWM outputs; requires external logic or MCU firmware to synthesize ABZ signals-increasing BOM and software complexity. | Select when only serial angle readout is needed and magnetic diagnostics are not required; lower cost but reduced functional integration. |
| Infineon TLE5012B E1000 | 13-bit resolution, BISS-C and PWM outputs, AEC-Q100 Grade 0, 3.3 V supply, -40°C to +150°C. | Uses BISS-C instead of SPI/SSI; lacks magnetic field strength flags (MGL/MGH); higher resolution but no on-chip NVM for zero-angle calibration. | Select for BISS-C–based systems requiring higher resolution; requires external EEPROM for zero-offset storage and lacks integrated field diagnostics. |
Compared with AMS AS5055A-BQFT and Infineon TLE5012B E1000, the MAQ470GQE-AEC1-P uniquely integrates ABZ, PWM, SPI, and SSI outputs with programmable magnetic diagnostics and on-chip NVM-all in a wettable-flank QFN-16, making it optimal for space-constrained, high-diagnostic automotive subsystems where interface flexibility and self-test capability are critical.
Availability
MAQ470GQE-AEC1-P is available at Aetrix Electronics and suitable for electric power steering (EPS), transmission position sensing, throttle valve control, and turbocharger VGT actuation requiring stable component supply across automotive Tier-1 production programs.
Supply support for MAQ470GQE-AEC1-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 motion sensing solutions for automotive, industrial, and computing markets.
The MagAlpha® product line delivers highly integrated, AEC-Q100–qualified angle sensors targeting electric vehicle drivetrain, chassis, and powertrain applications where contactless reliability, multi-output flexibility, and embedded diagnostics are essential.
FAQ
What is the maximum rotational speed supported by the MAQ470GQE-AEC1-P?
The MAQ470GQE-AEC1-P supports accurate angle measurement up to 60,000 rpm. This capability is enabled by its 980 kHz internal refresh rate and low-latency 10 µs propagation delay, ensuring minimal phase lag between mechanical rotation and digital output-critical for high-speed motor control in EPS and turbocharger applications.
How does the Spinaxis™ method differ from traditional Hall-based angle sensing?
Spinaxis™ uses phase detection of sinusoidal Hall signals rather than arctangent computation or interpolative feedback loops. It directly converts magnetic field direction into time-domain data via a time-to-digital converter, achieving 12-bit resolution with <10 µs latency and eliminating harmonic distortion inherent in lookup-table or analog-comparator approaches.
Can the MAQ470GQE-AEC1-P operate with magnets weaker than 30 mT?
Yes-the device functions below 30 mT, but linearity and resolution degrade outside the specified 30–60 mT range. At 25 mT, INL increases beyond 1.1° and effective resolution drops below 11 bits. For reliable operation, use N35 Ø5×3 mm magnets with ≤1.5 mm air gap to maintain field strength within spec.
Is the QFN-16 package RoHS and automotive green compliant?
Yes. The MAQ470GQE-AEC1-P is lead-free, halogen-free, and fully compliant with the EU RoHS Directive. MPS certifies all MagAlpha devices as "green" per its Quality Assurance program, with material declarations available on the official MPS website.
What is the purpose of the TEST pin (Pin 10)?
Pin 10 (TEST) is reserved for factory wafer-level and final-test operations. It must be externally connected to GND in all application circuits. Leaving it floating or applying voltage may disrupt internal test modes or cause undefined behavior during power-up sequences.
How is zero-angle calibration performed and stored?
Zero-angle offset is programmed via SPI into registers 0x00 (Z[7:0]) and 0x01 (Z[15:8]), then written to on-chip non-volatile memory. After a 20 ms NVM write cycle, the value persists across power cycles and automatically loads at startup-enabling one-time mechanical alignment during module assembly.
Does the MAQ470GQE-AEC1-P support daisy-chaining multiple sensors on one SPI bus?
No-each MAQ470GQE-AEC1-P requires a dedicated CS line. While SPI supports multi-drop topology in theory, the device's auto-mode detection (Mode 0/3) and lack of addressable slave ID prevent reliable shared-bus operation. Use separate CS lines or an external multiplexer for multi-sensor systems.
MAQ470GQE-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Package/Case:
- 16-VFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- For Measuring:
- Angle
- Technology:
- Hall Effect
- Rotation Angle - Electrical, Mechanical:
- -
- Linear Range:
- -
- Output:
- PWM, SPI
- Output Signal:
- Programmable
- Actuator Type:
- External Magnet, Not Included
- Linearity:
- -
- Resistance:
- -
- Resistance Tolerance:
- -
- Voltage - Supply:
- 3V ~ 3.6V
- Mounting Type:
- Surface Mount, Wettable Flank
- Termination Style:
- SMD (SMT) Tab
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Supplier Device Package:
- 16-QFN (3x3)
MAQ470GQE-AEC1-P FAQ
1.How can I place an order for MAQ470GQE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MAQ470GQE-AEC1-P on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAQ470GQE-AEC1-P reliable?
The price and inventory of MAQ470GQE-AEC1-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAQ470GQE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MAQ470GQE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAQ470GQE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAQ470GQE-AEC1-P?
MAQ470GQE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAQ470GQE-AEC1-P order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAQ470GQE-AEC1-P?
For technical support, including MAQ470GQE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAQ470GQE-AEC1-P requirements.
6.How does Aetrix verify that MAQ470GQE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MAQ470GQE-AEC1-P products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAQ470GQE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MAQ470GQE-AEC1-P?
All MAQ470GQE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MAQ470GQE-AEC1-P, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAQ470GQE-AEC1-P part is unused and in its original packaging.
Return procedure for MAQ470GQE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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