NXP Semiconductors MMA6262QR2

Overview

MMA6262QR2 from Freescale Semiconductor is a ±1.5g dual-axis capacitive micromachined accelerometer with integrated signal conditioning, 150 Hz bandwidth, 2.2 mA supply current, and ratiometric linear output. It delivers X/Y-axis motion sensing for tilt, impact, and freefall detection in portable electronics and industrial control systems.

For engineers reviewing the MMA6262QR2 datasheet, MMA6262QR2 pinout, MMA6262QR2 application, or MMA6262QR2 equivalent, this device requires attention to self-test logic timing (2.0 ms response), QFN-16 thermal pad grounding, and ratiometric ADC interface design under 2.7–3.6 V operation.

Technical Context

The MMA6262QR2 implements a surface-micromachined polysilicon g-cell with back-to-back capacitors and an ASIC using switched-capacitor techniques for capacitance-to-voltage conversion. Its single-pole low-pass filter is fully internal-no external RC components needed-and cut-off is factory-trimmed to 150 Hz.

Signal path includes temperature-compensated X/Y integrators, gain stages, and EEPROM-trimmed offset/sensitivity calibration. Self-test applies electrostatic force to the movable plate via ST pin, producing a calibrated output shift of 0.9×VDD at XOUT/YOUT.

Key Specifications

Pinout & Package

Package: 16-lead QFN (Case 1477-02), 6 mm × 6 mm × 1.98 mm, exposed thermal pad connected to VSS.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-axis capacitive accelerometer applications.

Compared with MMA6261QR2 and ADXL322BCPZ-RL7, the MMA6262QR2 uniquely balances 150 Hz bandwidth, 2.2 mA active current, built-in self-test, and ratiometric linearity-making it optimal for cost-sensitive industrial and portable devices requiring verified reliability and minimal external components.

Availability

MMA6262QR2 is available at Aetrix Electronics and suitable for tilt monitoring, freefall detection, impact logging, and vibration analysis requiring stable component supply across automotive infotainment, industrial handhelds, and smart appliance programs.

Supply support for MMA6262QR2 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) specialized in embedded controllers and sensors for automotive, industrial, and consumer applications before its 2015 acquisition.

The MMA6260Q series was designed for cost-sensitive, space-constrained motion sensing in portable electronics-emphasizing integration, self-test, and ratiometric simplicity over programmability or digital interfaces.

FAQ

What is the operating voltage range for the MMA6262QR2?

The MMA6262QR2 operates from 2.7 V to 3.6 V DC. Within this range, it functions as a fully calibrated linear accelerometer with ratiometric output. Supply voltages outside this window may yield linear output but are not guaranteed to maintain factory calibration accuracy or specified noise performance. The MMA6262QR2 draws 2.2 mA typical at 3.3 V, and its zero-g output scales proportionally with VDD.

Does the MMA6262QR2 require external components for basic operation?

No, the MMA6262QR2 requires only a 0.1 µF ceramic decoupling capacitor on VDD and proper grounding of the exposed thermal pad to VSS. Its onboard switched-capacitor filter, signal conditioning, and temperature compensation eliminate the need for external op-amps, resistors, or capacitors. An optional 1.0 kΩ + 0.1 µF RC filter on XOUT/YOUT is recommended only to suppress clock feedthrough noise.

How does the self-test function work on the MMA6262QR2?

The MMA6262QR2 self-test applies an electrostatic force to the movable g-cell plate via the ST pin. When a logic-high pulse (≥0.7×VDD, ≥100 ns wide) is applied, the ASIC generates a calibrated voltage shift equal to 0.9×VDD at both XOUT and YOUT. This verifies mechanical deflection capability and end-to-end signal chain integrity. The internal 57 kΩ pull-down resistor prevents accidental activation.

What is the significance of ratiometric output in the MMA6262QR2?

Ratiometric output means both zero-g offset and sensitivity scale linearly with VDD. For example, at 3.0 V supply, zero-g is ~1.5 V and sensitivity is ~727 mV/g; at 3.6 V, they scale to ~1.8 V and ~873 mV/g. This allows direct connection to a microcontroller's ADC reference (e.g., AVCC) so supply-induced errors cancel out-no separate voltage reference or calibration software is needed for basic motion sensing.

Can the MMA6262QR2 be used for Z-axis motion detection?

The MMA6262QR2 is a dedicated X-Y planar accelerometer and does not measure Z-axis acceleration. However, Z-axis motion can be inferred indirectly by combining X and Y outputs to compute vector magnitude or tilt angle relative to gravity. For true 3-axis sensing, Freescale's MMA7260Q or similar triaxial devices would be required-MMA6262QR2's mechanical design and signal chain are optimized exclusively for in-plane detection.