NXP Semiconductors MMA6270Q

Overview

MMA6270Q from Freescale Semiconductor is a dual-axis capacitive micromachined accelerometer with selectable ±1.5 g / ±2 g / ±4 g / ±6 g full-scale ranges, 800 mV/g sensitivity at 1.5 g, low-power sleep mode (3 μA), and integrated signal conditioning including a 1-pole switched-capacitor low-pass filter - used in laptop freefall detection, mobile phone motion dialing, and gaming tilt sensing.

For engineers reviewing the MMA6270Q datasheet, MMA6270Q pinout, MMA6270Q application, or MMA6270Q equivalent, key selection criteria include g-range configurability via g-Select pins, ratiometric output scaling with VDD, zero-g offset stability over temperature, and QFN-16 package compatibility with handheld PCB layouts.

Technical Context

The MMA6270Q integrates two surface-micromachined polysilicon g-cells with an ASIC that performs capacitance-to-voltage conversion using switched-capacitor techniques. Its internal EEPROM trims zero-g offset and sensitivity across temperature, eliminating external calibration components.

Signal conditioning includes factory-set low-pass filtering (f_−3dB = 350 Hz typical), ratiometric output (offset and sensitivity scale linearly with VDD), and digital control logic for g-Select and Sleep Mode - all operating from a single 2.2–3.6 V supply without external passive components.

Key Specifications

Pinout & Package

Package: 16-lead QFN (Case 1622-02), 6 mm × 6 mm × 1.45 mm, Pb-free terminations, thermally enhanced exposed die pad internally connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXL322 and MMA8452Q, the MMA6270Q uniquely balances analog simplicity, configurable g-range, and industry-leading 3 μA sleep current - making it optimal for cost-sensitive, battery-constrained motion systems requiring minimal BOM and firmware complexity.

Availability

MMA6270Q is available at Aetrix Electronics and suitable for laptop freefall protection, mobile phone motion UI, and gaming controller applications requiring stable component supply and long-term manufacturability.

Supply support for MMA6270Q 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) was a leading designer of embedded processors, sensors, and analog ICs for automotive, industrial, and consumer markets.

The MMA6270Q belongs to Freescale's micromachined accelerometer product line, engineered specifically for low-cost, low-power motion sensing in battery-operated portable electronics.

FAQ

What is the supply voltage range for the MMA6270Q?

The MMA6270Q operates from 2.2 V to 3.6 V DC. Operation outside this range is not guaranteed to meet specifications, and supply voltage must rise to ≥2.2 V within 0.1 ms at the VDD pin to ensure reliable startup. The MMA6270Q's ratiometric output scales linearly with VDD, so both zero-g offset and sensitivity vary proportionally across this range.

How does the g-Select feature work on the MMA6270Q?

The MMA6270Q uses two logic inputs - g-Select1 (Pin 1) and g-Select2 (Pin 2) - to select among four full-scale ranges: 00 = ±1.5 g, 01 = ±2 g, 10 = ±4 g, 11 = ±6 g. These pins can be driven statically or changed dynamically during operation. If left unconnected, internal pull-downs default the MMA6270Q to ±1.5 g mode with 800 mV/g sensitivity.

What is the typical sleep current of the MMA6270Q and how is it enabled?

The MMA6270Q draws 3 μA typical current in Sleep Mode, achieved by asserting a logic-low signal on Pin 12 (Sleep Mode). In this state, analog outputs are disabled and internal circuitry enters ultra-low-power standby. To minimize total system power, Freescale recommends configuring g-Select for ±1.5 g mode before entering sleep - the MMA6270Q retains its g-range setting across sleep/wake cycles.

Does the MMA6270Q require external components for filtering or calibration?

No. The MMA6270Q integrates a factory-trimmed 1-pole switched-capacitor low-pass filter (350 Hz typical) and full temperature compensation - zero-g offset, sensitivity, and filter cutoff are set during manufacturing and require no external resistors, capacitors, or calibration firmware. Only local 0.1 µF VDD decoupling and optional 1 kΩ + 0.1 µF RC filters on XOUT/YOUT are recommended per datasheet layout guidance.

What package type and dimensions does the MMA6270Q use?

The MMA6270Q uses a 16-pin QFN package (Case 1622-02), measuring 6.0 mm × 6.0 mm × 1.45 mm with an exposed thermal pad internally connected to VSS. The footprint requires NSMD (non-solder-mask-defined) pads, 0.55 mm × 0.50 mm land pattern, and avoids soldering the die pad for consumer applications per Freescale's PCB design guidelines.