NXP Semiconductors MMA2260D

Overview

MMA2260D from Freescale Semiconductor is a ±1.5g, X-axis-only silicon capacitive micromachined accelerometer in SOIC-16 package, featuring integrated 2-pole Bessel filter, factory-calibrated sensitivity of 1200 mV/g (typ), and self-test capability. It delivers ratiometric analog voltage output referenced to VDD/2 at zero-g, with 50 Hz bandwidth and 3.5 mVrms noise (0.1–1.0 kHz), used in tilt monitoring and vibration recording systems.

For engineers reviewing the MMA2260D datasheet, MMA2260D pinout, MMA2260D application, or MMA2260D equivalent, key selection considerations include its unidirectional X-axis sensitivity, –40°C to +105°C operating range, 2.2 mA supply current, and status-fault latching behavior tied to EPROM parity integrity.

Technical Context

The MMA2260D implements a surface-micromachined polysilicon g-cell with back-to-back capacitors, read via switched-capacitor ASIC circuitry that provides temperature-compensated signal conditioning. Its 2-pole Bessel filter is fully integrated with no external components required, and cut-off frequency is fixed at 50 Hz (typ).

Self-test is activated by logic-high ST input, applying electrostatic force to deflect the central plate; resulting output shift (∆VST = 0.4 V typ) verifies mechanical and electrical functionality. The STATUS pin latches high on EPROM parity error and resets only upon rising edge of ST-unless fault persists.

Key Specifications

Pinout & Package

Package: 16-lead SOIC (Case 475-01), surface-mount, RoHS-compliant. Pin 1 marked with dot; pins 1–3 and 7 are redundant VSS connections; pins 9–13 are factory trim-only; pins 14–16 are NC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMA2260D, ADXL320ARZ offers higher bandwidth but omits fault detection and self-test validation, while MMA2260EG provides identical performance with Pb-free termination-making it a drop-in replacement where RoHS compliance is required.

Availability

MMA2260D is available at Aetrix Electronics and suitable for tilt monitoring, vibration recording, and trailer brake control applications requiring stable component supply across automotive aftermarket and industrial embedded programs.

Supply support for MMA2260D 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 was a global semiconductor manufacturer specializing in embedded processing, sensors, and analog solutions before its acquisition by NXP in 2015.

The MMA series was designed specifically for high-reliability industrial and automotive motion sensing, emphasizing factory-calibrated analog output, hermetic reliability, and integrated diagnostics for systems where field validation is critical.

FAQ

What is the full-scale acceleration range and axis orientation of the MMA2260D?

The MMA2260D is a single-axis (X-axis only) accelerometer with a full-scale range of ±1.5g. Its sensitivity is oriented exclusively along the X-axis as defined by the top-view package marking and pin 1 location. The device outputs a ratiometric analog voltage centered at VDD/2, increasing for positive X-axis acceleration and decreasing for negative acceleration. This specification is fixed at factory and requires no external configuration.

Does the MMA2260D require external components for basic operation?

Yes-the MMA2260D requires a 0.1 µF decoupling capacitor on VDD and an RC filter (1 kΩ + 0.01 µF) on VOUT to suppress switched-capacitor clock feedthrough. No external components are needed for filtering or calibration, as the 2-pole Bessel filter, zero-g offset, and sensitivity are factory-trimmed and stored in on-chip EPROM. Pins 9–13 are for factory trim only and must remain unconnected in end-user designs.

How does the self-test function work on the MMA2260D?

The MMA2260D self-test applies an electrostatic force to the micromachined g-cell via a dedicated self-test plate when ST (Pin 8) is driven high. This produces a calibrated mechanical deflection equivalent to ~0.33g acceleration, resulting in a 0.4 V (typ) shift in VOUT. The test verifies both mechanical integrity of the sensor and functionality of the signal chain-including ASIC, filter, and output driver-without external equipment.

What does the STATUS pin indicate, and how is it reset?

The STATUS pin on the MMA2260D is an open-drain output that latches high when EPROM parity becomes odd-indicating potential corruption of factory calibration data. It also goes high during active self-test. The latch resets only upon a rising edge applied to the ST pin, unless the underlying fault (e.g., persistent parity error) remains. This behavior enables deterministic fault detection and recovery in safety-critical monitoring systems.

Is the MMA2260D compatible with modern RoHS-compliant assembly processes?

Yes-the MMA2260D is RoHS-compliant and Pb-free, as confirmed in its 2006 datasheet revision. It uses lead-free terminations suitable for standard reflow profiles. For new designs requiring full documentation traceability, the MMA2260EG variant (identical specs, Pb-free marking) is also available. Both parts share the same SOIC-16 package (Case 475-01) and thermal profile compatibility.