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NXP Semiconductors MMA6261Q
- Part No.:
- MMA6261Q
- Manufacturer:
- NXP Semiconductors
- Category:
- Accelerometers
- Package:
- 16-QFN Exposed Pad
- Datasheet:
-
MMA6261Q.pdf
- Description:
- ACCELEROMETER 1.5G ANALOG 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,291
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Product details
Overview
MMA6261Q from Freescale Semiconductor is a ±1.5 g dual-axis capacitive micromachined accelerometer with 300 Hz bandwidth, 3.5 mVRMS noise (0.1 Hz–1 kHz), and ratiometric linear output. It integrates signal conditioning, a factory-set 1-pole low-pass filter, and self-test capability in a QFN-16 package. Used in tilt monitoring and impact detection where fast response and stable DC-coupled acceleration measurement are required.
For engineers reviewing the MMA6261Q datasheet, MMA6261Q pinout, MMA6261Q application, or MMA6261Q equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and confirmed alternative options for motion sensing designs requiring 300 Hz bandwidth and sub-2 mA supply current.
Technical Context
The MMA6261Q employs a surface-micromachined polysilicon g-cell with back-to-back capacitive sensing elements and an ASIC using switched-capacitor techniques for capacitance-to-voltage conversion. Its internal clock generator operates at 16 kHz for low-current mode, enabling precise timing of sampling and filtering without external components.
Signal path includes X/Y-axis integrators, temperature-compensated gain stages, and a single-pole switched-capacitor low-pass filter set to 300 Hz. The self-test function applies electrostatic force via a dedicated fourth plate, producing a calibrated output shift detectable on XOUT or YOUT-verifying both mechanical and electronic integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Acceleration Range | ±1.5 g full-scale - supports tilt sensing up to ±90° and moderate shock detection without saturation |
| Bandwidth (−3 dB) | 300 Hz - enables accurate capture of dynamic motion events such as drop impact or vibration up to 300 Hz |
| Output Noise (RMS) | 3.5 mVRMS (0.1 Hz–1 kHz) - defines minimum resolvable acceleration change (~4.4 mg RMS at 800 mV/g sensitivity) |
| Supply Current | 1.2 mA typical - allows battery-powered operation for >1 year in low-duty-cycle portable applications |
| Power-Up Response Time | 2.0 ms - ensures rapid system readiness after wake-up, critical for event-triggered sensing |
| Ratiometric Output | VOUT scales linearly with VDD - eliminates need for separate voltage reference when interfacing to ADCs |
| Self-Test Output Shift | 0.9 × VDD - provides unambiguous pass/fail verification without external calibration equipment |
Pinout & Package
Package: 16-lead QFN (Case 1477-02), 6 mm × 6 mm × 1.98 mm, exposed thermal pad (flag) connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XOUT (Pin 15) | Analog output for X-axis acceleration | DC-coupled ratiometric voltage (VDD/2 ± 0.8 V at ±1.5 g); requires RC filter (1 kΩ + 0.1 µF) to suppress switching noise |
| YOUT (Pin 14) | Analog output for Y-axis acceleration | Identical electrical behavior to XOUT; enables simultaneous dual-axis measurement without multiplexing |
| ST (Pin 12) | Digital input for self-test activation | Logic-high (>0.7 × VDD) initiates electrostatic deflection; internal 57 kΩ pull-down prevents false triggering |
| VDD (Pin 3) | Positive power supply | 2.7–3.6 V operation; 0.1 µF decoupling capacitor required adjacent to pin for stable internal oscillator performance |
| VSS (Pin 4) | Ground reference | Must connect directly to PCB ground plane; exposed flag underneath package is electrically tied to VSS |
| N/C (Pins 1, 2, 5–7, 8–11, 13, 16) | No internal connection | Leads 2, 8–11 used for factory trim only; all N/C pins must remain unconnected to avoid parasitic coupling or ESD paths |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1-pole low-pass filter | Factory-set 300 Hz cutoff eliminates need for external RC networks and reduces board space and BOM count |
| Full-system self-test | Validates g-cell movement and ASIC signal chain in situ-no external test fixtures or recalibration needed |
| Ratiometric output architecture | Offset and sensitivity track VDD, enabling direct interface to microcontroller ADCs without precision voltage references |
| Temperature-compensated sensitivity | 0.015 %/°C drift ensures stable scale factor across –20°C to +85°C operating range |
| Robust mechanical design | Withstands ±2000 g shocks and survives 1.2 m concrete drop tests-suitable for handheld and industrial environments |
Applications
| Tilt Monitoring in Industrial Level Sensors | Freefall Detection in Portable Electronics |
|---|---|
Use Scenario: Real-time inclination measurement of machinery frames or solar panel mounts under ambient vibration. IC Role / Device Role / Timing Role: Dual-axis analog output provides independent X/Y gravitational vector components for arctangent-based angle calculation. Use Value: 300 Hz bandwidth rejects high-frequency mounting resonance while preserving slow tilt dynamics; ratiometric output maintains accuracy across battery voltage decay. |
Use Scenario: Detecting sudden vertical acceleration loss in laptops or tablets to park HDD heads before impact. IC Role / Device Role / Timing Role: Fast power-up (2.0 ms) and deterministic self-test enable pre-boot validation; analog outputs feed comparator or ADC for threshold-triggered interrupt. Use Value: Low 1.2 mA supply current extends standby time; ±2000 g shock survivability ensures reliability after repeated drops. |
| Vibration Monitoring in Appliance Motors | Impact Event Logging in Smart Meters |
Use Scenario: Capturing motor housing vibration spectra in washing machines to detect imbalance or bearing wear. IC Role / Device Role / Timing Role: Analog X/Y outputs sampled by MCU ADC at ≥600 SPS resolve harmonics up to 300 Hz; internal filter prevents aliasing. Use Value: 3.5 mVRMS noise floor enables detection of sub-10 mg vibration amplitudes; QFN package withstands high-humidity, high-vibration environments. |
Use Scenario: Recording tamper-induced mechanical shocks on utility meters to trigger security alerts or firmware lockdown. IC Role / Device Role / Timing Role: Self-test verifies sensor functionality during periodic health checks; ST pin allows remote diagnostic activation via MCU GPIO. Use Value: Factory-trimmed zero-g offset (±0.165 V) ensures consistent trigger thresholds across production units without per-unit calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-axis capacitive accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMA6260Q | 50 Hz bandwidth, 1.8 mVRMS noise, same 1.2 mA supply current and QFN-16 package | Better suited for static tilt or low-frequency motion where noise floor dominates over bandwidth | Select MMA6260Q when system dynamics are <50 Hz and ultra-low noise is prioritized over responsiveness |
| MMA6263Q | 900 Hz bandwidth, 2.5 mVRMS noise, 2.2 mA supply current, identical pinout and package | Required for high-speed impact analysis or wideband vibration profiling beyond 300 Hz | Choose MMA6263Q when measuring transient events with rise times <1 ms or spectral content up to 900 Hz |
Compared with MMA6260Q, the MMA6261Q trades lower noise for higher bandwidth and faster response-ideal for mid-frequency motion events. Against MMA6263Q, it reduces power by 45% while retaining sufficient bandwidth for most drop, tilt, and appliance vibration use cases.
Availability
MMA6261Q is available at Aetrix Electronics and suitable for tilt monitoring, freefall detection, and vibration monitoring applications requiring stable component supply, long-term manufacturability, and qualified automotive-grade traceability.
Supply support for MMA6261Q 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
Freescale Semiconductor (now part of NXP Semiconductors) is a fabless semiconductor company specializing in embedded controllers, sensors, and analog ICs for industrial, automotive, and consumer systems.
The MMA6260Q series was designed as a cost-optimized, fully calibrated dual-axis accelerometer family targeting motion-aware portable and industrial electronics with minimal external component requirements.
FAQ
What is the bandwidth and noise performance of the MMA6261Q?
The MMA6261Q has a −3 dB bandwidth of 300 Hz and delivers 3.5 mVRMS output noise over the 0.1 Hz–1 kHz band. This combination supports reliable detection of dynamic motion events such as drops or vibrations while maintaining adequate resolution for tilt estimation. The MMA6261Q achieves this without external filtering components due to its integrated switched-capacitor low-pass filter.
How does the self-test function work on the MMA6261Q?
The MMA6261Q self-test applies an electrostatic force to the movable g-cell plate via the ST pin. When driven high (>0.7 × VDD), it generates a known deflection, resulting in a predictable output shift of approximately 0.9 × VDD on XOUT or YOUT. This validates both mechanical integrity and signal chain functionality without external equipment-critical for field-deployed devices requiring periodic health checks.
Is the MMA6261Q ratiometric, and why does that matter?
Yes, the MMA6261Q is fully ratiometric: both zero-g offset and sensitivity scale linearly with VDD. This means that if VDD changes from 3.0 V to 3.3 V, the output voltage at 0 g shifts proportionally from 1.5 V to 1.65 V. When paired with an MCU's internal ADC reference tied to the same VDD, supply-induced errors cancel-eliminating the need for a precision voltage reference in battery-powered systems.
What is the power-up response time of the MMA6261Q, and how does it affect system design?
The MMA6261Q achieves 90% of final output stability in 2.0 ms after power-on. This fast wake-up enables low-power systems to activate the sensor only when motion events are expected-such as in wake-on-motion configurations. Designers can minimize idle current by powering the MMA6261Q from a controlled LDO and initiating measurements within milliseconds of enabling VDD.
Can the MMA6261Q be used in high-shock environments like power tools or industrial equipment?
Yes-the MMA6261Q is rated for ±2000 g mechanical shock and survives 1.2 m concrete drop tests. Its monolithic MEMS structure and robust QFN packaging make it suitable for high-vibration applications including power tool condition monitoring and industrial machine health sensing. The device maintains calibration post-shock, and its self-test function allows in-field verification after exposure to extreme mechanical stress.
MMA6261Q Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- MMA6200
- Package/Case:
- 16-QFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Analog
- Axis:
- X, Y
- Acceleration Range:
- ±1.5g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 800
- Bandwidth:
- 300Hz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -20°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN-EP (6x6)
MMA6261Q FAQ
1.How can I place an order for MMA6261Q through Aetrix?
Please submit a Request for Quotation (RFQ) for MMA6261Q 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 MMA6261Q reliable?
The price and inventory of MMA6261Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMA6261Q is usually 5 days.
3.What payment methods are accepted for MMA6261Q?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMA6261Q transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMA6261Q?
MMA6261Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMA6261Q 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 MMA6261Q?
For technical support, including MMA6261Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMA6261Q requirements.
6.How does Aetrix verify that MMA6261Q is sourced from the original manufacturer or authorized distributors?
All MMA6261Q 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 MMA6261Q meets industry standards.
7.What is the process for return or replacement of MMA6261Q?
All MMA6261Q units undergo pre-shipment inspection (PSI). If there is an issue with MMA6261Q, 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 MMA6261Q part is unused and in its original packaging.
Return procedure for MMA6261Q:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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