My Inquiry
My Account
Monolithic Power Systems Inc. MA702GQ-P
- Part No.:
- MA702GQ-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Angle, Linear Position Measuring
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
MA702GQ-P.pdf
- Description:
- SENSOR ANGLE SMD
- Quantity:
- Payment:
- Shipping:
Inventory:3,550
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MA702GQ-P from Monolithic Power Systems is a 12-bit contactless absolute angle sensor using integrated Hall-effect sensing and Spinaxis™ phase-detection architecture to deliver high-accuracy angular position data at up to 60,000 rpm. It provides simultaneous ABZ incremental (programmable 1–256 pulses/turn), PWM (12-bit resolution, 204–264 Hz), and SPI/SSI digital outputs. Designed for end-of-shaft or side-shaft magnet mounting, it operates from -40°C to +125°C on 3.3 V and supports magnetic field strength diagnostics via programmable MGL/MGH flags.
For engineers reviewing the MA702GQ-P datasheet, MA702GQ-P pinout, MA702GQ-P application, or MA702GQ-P equivalent, this page delivers verified technical context, validated pin functions, real-world use cases in automotive and robotics, and confirmed alternative parts with documented functional trade-offs - all grounded in Monolithic Power's Rev. 1.2 datasheet and official package documentation.
Technical Context
The MA702GQ-P implements a direct time-to-digital conversion of sinusoidal phase signals generated by its integrated Hall array, eliminating arctangent computation or feedback interpolators. Its Spinaxis™ front-end delivers raw angle data at 1 MHz with open-loop latency under 10 µs and no added delay during steady-state operation.
Digital conditioning includes a configurable low-pass filter (fCUTOFF = 390 Hz) and on-chip non-volatile memory storing zero-angle offset, ABZ settings, and magnetic threshold registers (MGLT/MGHT). Magnetic field detection thresholds are factory-trimmed and temperature-compensated (−600 ppm/°C drift).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Angle Resolution | 12-bit absolute (typ. 11.8-bit effective, 3σ noise ≤0.03°) |
| ABZ Output | Programmable 1–256 pulses per turn; 16 MHz update rate; ≤0.3° total jitter |
| PWM Output | 12-bit resolution; fixed 204–264 Hz frequency; no software timing dependency |
| Supply & Temp | 3.3 V ±10%; 10.2–13.8 mA supply current; −40°C to +125°C operating range |
| Magnetic Field Range | 30–60 mT typical; supports diagnostics via MGL/MGH flags with 5 mT accuracy |
| Digital Interfaces | SPI Mode 0/3 (≤25 MHz); SSI 2-wire (non-standard, dummy-clock start); 14-bit serial output length |
| Refresh Rate | 850–1100 kHz; enables sub-µs sampling intervals for high-speed rotor tracking |
Pinout & Package
MA702GQ-P is housed in a QFN-16 (3 mm × 3 mm) package with exposed thermal pad recommended to be connected to GND for optimal electrical, thermal, and mechanical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SSD | SSI Data Out | Serial output for SSI interface only; high-impedance when inactive |
| 2 A | ABZ Channel A | Differential quadrature output; paired with B/Z for direction and index decoding |
| 3 Z | ABZ Index | Single-pulse-per-turn signal; programmable index length/position via ILIP register |
| 4 MOSI | SPI Data In | 16-bit command input; internal pull-down; accepts write/read register frames |
| 5 CS | SPI Chip Select | Active-low enable; internal pull-up; initiates SPI frame capture on falling edge |
| 6 B | ABZ Channel B | Quadrature complement to A; 90° phase shift enables direction detection |
| 7 MISO | SPI Data Out | 16-bit response output; internal pull-down enabled in high-Z state |
| 8 GND | Power Ground | Main return path; connects to exposed pad for thermal management |
| 9 PWM | PWM Angle Output | 12-bit duty-cycle-modulated signal; independent of SPI/SSI activity |
| 10 TEST | Test Pin | Must be tied to GND; unused in normal operation |
| 11 MGL | Magnetic Low Flag | Open-drain output asserted when field < MGLT threshold; used for axial movement or fault detection |
| 12 SCLK | SPI Clock | Master-generated clock; internal pull-down; supports ≤25 MHz operation |
| 13 VDD | Supply Input | 3.3 V nominal; requires local 1 µF decoupling capacitor near pin |
| 14 NC | No Connection | Unbonded pad; must remain unconnected and un-routed |
| 15 SSCK | SSI Clock | Non-standard SSI clock; low-idle with mandatory dummy rising edge to initiate frame |
| 16 MGH | Magnetic High Flag | Open-drain output asserted when field > MGHT threshold; enables dual-threshold diagnostics |
Key Features
| Feature | Design Value |
|---|---|
| Contactless Hall-based sensing | Eliminates mechanical wear; supports >10-year lifetime in motor and gearbox applications |
| On-chip NVM configuration storage | Persists zero-angle offset, ABZ pulse count, rotation direction, and magnetic thresholds across power cycles |
| Programmable magnetic field diagnostics | Two independent thresholds (MGLT/MGHT) with 5 mT accuracy enable shaft axial position monitoring and magnet health checks |
| Multi-interface concurrency | SPI, SSI, ABZ, and PWM operate simultaneously without resource contention or timing conflict |
| Side-shaft compensation capability | Bias current trimming (BCT, ETX, ETY) corrects nonlinearity in off-axis configurations without external calibration |
Applications
| Electric Power Steering (EPS) | Automotive Throttle Position Sensing |
|---|---|
|
Use Scenario: Real-time steering angle measurement in column-assist EPS systems with redundant safety path requirements. IC Role / Device Role / Timing Role: Primary absolute angle sensor feeding torque assist algorithms; ABZ output feeds ECU for dynamic speed/direction validation. Use Value: 12-bit resolution and <1.1° INL over −40°C to +125°C ensure ASIL-B compliance without external linearization; MGL/MGH flags detect magnet detachment or misalignment. |
Use Scenario: Closed-loop throttle valve position feedback in gasoline direct injection engines. IC Role / Device Role / Timing Role: Absolute position transducer interfacing directly to engine control unit via PWM and SPI; ABZ provides fast directional change detection during transient events. Use Value: 8–10 µs latency and 980 kHz refresh rate support 10 ms control loop updates; 30–60 mT field tolerance accommodates magnet aging over 150k km. |
| Industrial Servo Motor Feedback | Robotic Joint Position Sensing |
|
Use Scenario: High-bandwidth rotor angle acquisition in PMSM servo drives requiring field-oriented control (FOC). IC Role / Device Role / Timing Role: Rotor position source for FOC algorithm; SPI delivers high-resolution angle to MCU; PWM provides deterministic timing for gate driver sync. Use Value: Sub-µs sampling jitter and 1100 kHz refresh rate enable <1% torque ripple at 6000 rpm; side-shaft mounting flexibility simplifies motor redesign. |
Use Scenario: Compact joint angle measurement in collaborative robot arms where space and reliability are critical. IC Role / Device Role / Timing Role: Contactless absolute encoder replacing potentiometers; ABZ output interfaces to motion controller FPGA; NVM stores zero offset per joint. Use Value: QFN-16 (3×3 mm) footprint minimizes PCB area; −40°C to +125°C rating supports sealed gearmotor environments; MGL flag detects magnet displacement during impact events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute angle sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMS AS5055A-BQFT | 12-bit SPI-only output; no ABZ or PWM; requires external ADC for analog field monitoring | Lacks integrated diagnostics and multi-output concurrency; unsuitable for safety-critical ABZ redundancy paths | Select when only SPI readout is needed and magnetic diagnostics are handled externally |
| Texas Instruments TMAG5170-Q1 | 16-bit resolution; I²C/SPI; 3-axis field vector output; no native ABZ/PWM generation | Requires host MCU to synthesize ABZ waveforms; higher computational load and latency vs. MA702GQ-P's hardware ABZ | Select when 3D field analysis or higher resolution is required, and ABZ generation can be offloaded to firmware |
Compared with AMS AS5055A-BQFT and TMAG5170-Q1, the MA702GQ-P uniquely integrates ABZ, PWM, and SPI/SSI in one die with on-chip magnetic diagnostics - reducing BOM count, eliminating host-side waveform synthesis, and enabling direct connection to legacy encoder interfaces without glue logic.
Availability
MA702GQ-P is available at Aetrix Electronics and suitable for electric power steering, industrial servo feedback, and robotic joint position sensing requiring stable component supply, automotive-grade temperature resilience, and long-term lifecycle continuity.
Supply support for MA702GQ-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 design centers across Asia and North America.
The MagAlpha® product line delivers contactless angle sensing ICs optimized for automotive, industrial, and robotics applications where reliability, multi-interface flexibility, and magnetic diagnostics are essential - not just position reporting.
FAQ
What is the maximum rotational speed supported by the MA702GQ-P?
The MA702GQ-P supports continuous operation up to 60,000 rpm with full 12-bit resolution and ABZ output integrity. At this speed, ABZ jitter remains ≤0.3°, and PWM duty cycle accuracy holds within specification due to hardware-based timing generation independent of host processor load.
Can the MA702GQ-P be used in side-shaft (off-axis) mounting configurations?
Yes - the MA702GQ-P explicitly supports side-shaft mounting via on-chip bias current trimming (BCT, ETX, ETY registers) and programmable zero-angle offset. This allows linearization of the mechanical-to-magnetic angle relationship without external calibration hardware or firmware compensation tables.
How does the magnetic field strength detection work, and what are its practical uses?
The MA702GQ-P monitors field amplitude in real time and asserts open-drain MGL (low field) or MGH (high field) outputs when thresholds (MGLT/MGHT) are crossed. These flags enable detection of magnet detachment, axial misalignment, or demagnetization - commonly used for functional safety diagnostics in automotive EPS and brake-by-wire systems.
Is the exposed thermal pad on the QFN-16 package required to be connected to ground?
While the MA702GQ-P will function with the exposed pad floating, MPS recommends connecting it to GND. Doing so improves thermal resistance (θJC = 12°C/W), reduces junction temperature rise under 12 mA load, and enhances mechanical stability and EMI immunity - especially critical in automotive under-hood environments.
Does the MA702GQ-P support both clockwise and counterclockwise rotation direction programming?
Yes - the Rotation Direction (RD) bit in Register 9 allows software-selectable positive direction. When RD = 0 (default), angle increases clockwise when viewed from the top of the package; setting RD = 1 reverses this to counterclockwise, enabling direct compatibility with legacy encoder conventions without mechanical reorientation.
What is the minimum time required between SPI register write commands?
A 20 ms delay is mandatory between the first (write request) and second (acknowledge) SPI frames when writing to non-volatile registers. This interval ensures reliable programming of on-chip EEPROM, which is rated for 1,000 write cycles at 25°C. Skipping this delay results in register content retention of the prior value.
How does the MA702GQ-P handle magnetic field variations across temperature?
The MA702GQ-P compensates for temperature-induced field drift internally, with magnetic threshold hysteresis (6 mT) and temperature coefficient (−600 ppm/°C) specified and tested. Over −40°C to +125°C, total INL remains ≤1.1°, and field detection accuracy stays within ±5 mT - enabling robust operation without external temperature sensors or lookup tables.
MA702GQ-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
- Output Signal:
- Programmable
- Actuator Type:
- External Magnet, Not Included
- Linearity:
- -
- Resistance:
- -
- Resistance Tolerance:
- -
- Voltage - Supply:
- 3.3V
- Mounting Type:
- Surface Mount
- Termination Style:
- SMD (SMT) Tab
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-QFN (3x3)
MA702GQ-P FAQ
1.How can I place an order for MA702GQ-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MA702GQ-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 MA702GQ-P reliable?
The price and inventory of MA702GQ-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MA702GQ-P is usually 5 days.
3.What payment methods are accepted for MA702GQ-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MA702GQ-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MA702GQ-P?
MA702GQ-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MA702GQ-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 MA702GQ-P?
For technical support, including MA702GQ-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MA702GQ-P requirements.
6.How does Aetrix verify that MA702GQ-P is sourced from the original manufacturer or authorized distributors?
All MA702GQ-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 MA702GQ-P meets industry standards.
7.What is the process for return or replacement of MA702GQ-P?
All MA702GQ-P units undergo pre-shipment inspection (PSI). If there is an issue with MA702GQ-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 MA702GQ-P part is unused and in its original packaging.
Return procedure for MA702GQ-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MA702GQ-P Tags
-
TLV493DA1B6HTSA2
Infineon Technologies
-
EVW-AE4001B14
Panasonic Electronic Components
-
3382G-1-103G
Bourns Inc.
-
TLE5501E0001XUMA1
Infineon Technologies
-
HAL830UT-A
TDK-Micronas GmbH
-
TLE5009E1000FUMA1
Infineon Technologies
-
TLE5501E0002XUMA1
Infineon Technologies
-
HAL3725DJ-A
TDK-Micronas GmbH
-
HAL3727DJ-A
TDK-Micronas GmbH
-
HMC1501-TR
Honeywell Aerospace
-
HMC1512-TR
Honeywell Aerospace
-
AAS33001LLEATR-5
Allegro MicroSystems
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
