NXP Semiconductors MMA2260EG

Overview

MMA2260EG from Freescale Semiconductor is a ±1.5g, X-axis silicon capacitive micromachined accelerometer with integrated signal conditioning, 2nd-order Bessel low-pass filter (50 Hz typical), and factory-calibrated self-test. It delivers ratiometric linear output (1200 mV/g typical), operates from 4.75–5.25 V, draws 2.2 mA typical, and targets tilt sensing and vibration monitoring in industrial and automotive aftermarket systems.

For engineers reviewing the MMA2260EG datasheet, MMA2260EG pinout, MMA2260EG application, or MMA2260EG equivalent, this page provides verified technical context, SOIC-16 pin mapping, real-world use scenarios, and validated alternative options for inclinometer and mechanical monitoring designs.

Technical Context

The MMA2260EG implements a surface-micromachined polysilicon g-cell with back-to-back capacitors, read via switched-capacitor ASIC circuitry. Its signal path includes temperature-compensated gain, integrator, and a 2-pole switched-capacitor Bessel filter - eliminating external RC components.

Self-test is activated by a logic-high ST input, electrostatically deflecting the central plate to generate a calibrated output shift (ΔVST = 0.4 V typical). The STATUS pin latches high on EPROM parity error and resets only upon rising edge of ST if no fault persists.

Key Specifications

Pinout & Package

Package: 16-lead SOIC (Case No. 475-01), Pb-free (EG suffix), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMA2260EG, ADXL320ARZ offers wider dynamic range but omits built-in diagnostics, while MMA2260D shares full functionality but violates modern environmental compliance - making MMA2260EG the sole choice for new RoHS-compliant designs requiring self-test and fault reporting.

Availability

MMA2260EG is available at Aetrix Electronics and suitable for tilt monitoring, inclinometer systems, and trailer brake controls requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MMA2260EG 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 and sensors, specializing in automotive, industrial, and consumer ICs with robust qualification and longevity focus.

The MMA2260EG belongs to Freescale's micromachined accelerometer product line, engineered for high-reliability static and low-frequency dynamic sensing in mechanically demanding environments like vehicle chassis and heavy equipment.

FAQ

What is the operating voltage range for the MMA2260EG?

The MMA2260EG operates within a supply voltage range of 4.75 V to 5.25 V. Operation outside this window may yield linear output but invalidates factory calibration. A 0.1 µF ceramic capacitor must be placed directly between VDD and VSS pins to suppress power supply noise, as specified in the Freescale MMA2260D datasheet Rev. 3. The MMA2260EG draws 2.2 mA typical current at 5.0 V, supporting low-power industrial monitoring applications.

Does the MMA2260EG include a self-test function, and how is it activated?

Yes, the MMA2260EG includes a calibrated self-test feature. It is activated by applying a logic-high signal to the ST pin (Pin 8), which electrostatically deflects the internal g-cell and produces a measurable output shift of approximately 0.4 V at VOUT. This verifies both mechanical integrity and signal chain functionality. The STATUS pin reflects test initiation and latches on faults; a rising edge on ST resets it if no persistent error exists. This capability is integral to the MMA2260EG design and requires no external components.

What is the bandwidth and filter type used in the MMA2260EG?

The MMA2260EG incorporates an onboard 2-pole switched-capacitor Bessel filter with a typical –3 dB bandwidth of 50 Hz. Unlike Butterworth or Chebyshev filters, the Bessel response prioritizes linear phase characteristics, preserving waveform shape for time-domain vibration analysis. Because it uses switched-capacitor architecture, no external resistors or capacitors are needed to set the cutoff frequency - a key advantage confirmed in the MMA2260EG functional block diagram and Table 2 of the datasheet.

Is the MMA2260EG RoHS-compliant, and what does the 'EG' suffix indicate?

Yes, the MMA2260EG is RoHS-compliant and Pb-free, as explicitly stated in the Freescale documentation: "RoHS-compliant and/or Pb-free versions [...] have the functionality and electrical characteristics of their non-RoHS-compliant counterparts." The 'EG' suffix denotes the Pb-free SOIC-16 package (Case 475-01), distinguishing it from the leaded MMA2260D variant. Both share identical electrical performance, but only the MMA2260EG meets modern environmental compliance standards for new designs.

How is the output of the MMA2260EG referenced, and what is its zero-g voltage?

The MMA2260EG output is ratiometric and centered at VDD/2. At zero acceleration and VDD = 5.0 V, the nominal output voltage (VOFF) is 2.50 V, with a specified range of 2.3 V to 2.7 V. Positive acceleration increases VOUT above 2.5 V; negative acceleration decreases it below 2.5 V - enabling direct interpretation of direction and magnitude. This midsupply referencing simplifies analog-to-digital conversion and eliminates need for external level-shifting circuitry in the MMA2260EG signal chain.