NXP Semiconductors MMA7260Q

Overview

MMA7260Q from Freescale Semiconductor is a ±1.5g–6g three-axis capacitive micromachined accelerometer with integrated signal conditioning, factory-trimmed zero-g offset and full-scale span, selectable sensitivity via g-Select pins, and Sleep Mode for ultra-low-power operation. It delivers ratiometric analog outputs (XOUT/YOUT/ZOUT), operates from 2.2 V to 3.6 V, and is used in handheld electronics for freefall detection, motion-based UI, and tilt compensation.

For engineers reviewing the MMA7260Q datasheet, MMA7260Q pinout, MMA7260Q application, or MMA7260Q equivalent, this page provides verified technical context, exact pin functions, real-world use cases in battery-powered devices, and validated alternative options for motion-sensing designs requiring low current consumption and configurable g-range.

Technical Context

The MMA7260Q integrates dual surface-micromachined polysilicon g-cells per axis and an ASIC using switched-capacitor techniques to convert differential capacitance changes into ratiometric analog voltage outputs. Its internal 1-pole switched-capacitor low-pass filter eliminates external components, with XY-axis bandwidth at 350 Hz and Z-axis at 150 Hz.

g-Select logic (pins 1 and 2) configures gain to deliver 800 mV/g (1.5g), 600 mV/g (2g), 300 mV/g (4g), or 200 mV/g (6g); Sleep Mode (pin 12) reduces supply current from 500 μA to 3 μA while disabling outputs. Temperature compensation and EEPROM-trimmed calibration ensure stable performance across –40°C to +105°C.

Key Specifications

Pinout & Package

Package: 16-lead QFN (6 mm × 6 mm × 1.45 mm), exposed thermal pad internally connected to VSS, non-soldered per Freescale recommendation for consumer applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar three-axis analog accelerometer applications.

Compared with ADXL335 and KXSC7-2050, the MMA7260Q uniquely combines selectable g-range, 3 μA Sleep Mode, and ratiometric analog outputs - making it optimal for cost-sensitive, battery-constrained motion systems where flexibility and minimal external components are critical.

Availability

MMA7260Q is available at Aetrix Electronics and suitable for laptop freefall protection, mobile phone motion UI, and pedometer activity monitoring requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for MMA7260Q 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 connectivity solutions for automotive, industrial, and consumer markets.

The MMA7260Q belongs to Freescale's MEMS accelerometer product line, designed specifically for ultra-low-power, cost-sensitive motion-sensing applications in handheld and portable electronics.

FAQ

What is the supply voltage range for the MMA7260Q?

The MMA7260Q operates from 2.2 V to 3.6 V. Within this range, it functions as a fully calibrated linear accelerometer; operation outside these limits may yield linear but uncalibrated output. The device's ratiometric architecture ensures output scaling with VDD, supporting direct interface to microcontroller ADCs without external references. This makes the MMA7260Q especially suitable for single-cell battery-powered systems where supply voltage varies significantly during discharge.

How does the g-Select feature work on the MMA7260Q?

The g-Select feature on the MMA7260Q uses logic levels on pins 1 (g-Select1) and 2 (g-Select2) to configure full-scale sensitivity among ±1.5g, ±2g, ±4g, or ±6g. With both pins low (00), sensitivity is 800 mV/g; other combinations yield 600, 300, or 200 mV/g respectively. Pins default to 1.5g mode via internal pull-downs if left unconnected - eliminating external resistors in fixed-range designs. This allows one MMA7260Q to serve multiple motion-detection thresholds without hardware change.

What is the Sleep Mode current draw of the MMA7260Q?

The MMA7260Q draws 3 μA typical in Sleep Mode, activated by applying a logic low to pin 12 (Sleep Mode). In this state, analog outputs (XOUT/YOUT/ZOUT) enter high-impedance, and internal circuitry powers down except for bias generation. This ultra-low quiescent current enables multi-year battery life in always-on motion-triggered applications like anti-theft alarms or pedometers. For minimum power, Freescale recommends configuring g-Select for 1.5g mode before entering Sleep Mode.

Does the MMA7260Q require external filtering components?

No, the MMA7260Q includes an onboard 1-pole switched-capacitor low-pass filter with fixed cutoff frequencies (350 Hz for XY axes, 150 Hz for Z axis), requiring no external resistors or capacitors. However, Freescale recommends adding a 1.0 kΩ series resistor and 0.1 µF capacitor on each analog output to suppress clock feedthrough noise from the internal switched-capacitor circuitry. These RC networks are not for setting bandwidth but for noise mitigation - a key distinction from traditional analog filter design.

What is the operating temperature range of the MMA7260Q?

The MMA7260Q is specified for operation from –40°C to +105°C, with full performance compliance across this range. Its internal temperature compensation corrects zero-g offset drift to ±0.8 mg/°C and maintains sensitivity stability - critical for automotive infotainment mounting locations and industrial handhelds exposed to ambient extremes. The device's QFN package (Case 1622-02) supports lead-free reflow profiles up to 260°C, ensuring robust assembly reliability in high-volume manufacturing.