NXP Semiconductors MMA2204KEGR2

Overview

MMA2204KEGR2 from NXP Semiconductors (formerly Freescale) is a surface-mount, silicon capacitive micromachined accelerometer with integrated signal conditioning, 4th-order Bessel low-pass filtering, and factory-calibrated ±100g full-scale range on the X-axis. It delivers ratiometric linear output (20 mV/g typical sensitivity), operates from 4.75–5.25 V, draws 5.0 mA typical supply current, and is qualified to AEC-Q100 Grade 2 (–40°C to +105°C) for automotive and industrial vibration monitoring.

For engineers reviewing the MMA2204KEGR2 datasheet, MMA2204KEGR2 pinout, MMA2204KEGR2 application, or MMA2204KEGR2 equivalent, this page provides verified technical context, SOIC-16 pin mapping, self-test and fault-detection behavior, real-world use cases in hard drive protection and bearing monitoring, and validated alternative parts for design continuity.

Technical Context

The MMA2204KEGR2 implements a monolithic CMOS ASIC with a wafer-level hermetically sealed polysilicon g-cell transducer. Its switched-capacitor architecture measures differential capacitance changes induced by acceleration, then conditions and filters the signal using an internal 70 kHz oscillator-driven 4-pole Bessel filter - preserving pulse shape integrity without external components.

It integrates self-test actuation via electrostatic force on a dedicated test plate, status latching for EPROM parity errors or clock monitor failure (f_min = 150 kHz), and low-voltage detection (trip at 3.25 V). All calibration parameters - zero-g offset, full-scale span, and filter cutoff - are factory-trimmed and stored in on-chip EPROM.

Key Specifications

Pinout & Package

Package: 16-lead SOIC (Case 475-01), 7.5 mm × 10.3 mm body, 1.27 mm pitch, Pb-free (KEG suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXL326BCPZ-RL7 and MMA8452Q, the MMA2204KEGR2 uniquely combines analog ratiometric output, factory-trimmed calibration, self-test verification, and fault-latched STATUS signaling in a single SOIC-16 package - making it optimal for safety-critical industrial and automotive analog-sensing nodes where deterministic diagnostics are mandatory.

Availability

MMA2204KEGR2 is available at Aetrix Electronics and suitable for vibration monitoring and recording, computer hard drive protection, and appliance control requiring stable component supply across automotive and industrial production cycles.

Supply support for MMA2204KEGR2 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

NXP Semiconductors acquired Freescale in 2015 and continues its legacy of high-reliability sensor ICs for automotive and industrial markets.

The MMA2204KEGR2 belongs to Freescale's legacy MMA series of analog-output accelerometers, designed specifically for robust, calibrated, single-axis motion sensing in safety-critical mechanical systems where analog interface simplicity and diagnostic integrity are prioritized over digital flexibility.

FAQ

What is the operating voltage range for the MMA2204KEGR2?

The MMA2204KEGR2 operates within a strict 4.75 V to 5.25 V supply range. Operation outside this window invalidates factory calibration and may cause nonlinearity or output saturation. A 0.1 µF ceramic capacitor must be placed directly between VDD and VSS, within 5 mm of the package, to ensure stable internal oscillator and filter performance. The MMA2204KEGR2 does not support 3.3 V operation.

How does the self-test function work on the MMA2204KEGR2?

The MMA2204KEGR2 self-test applies electrostatic force to the movable g-cell plate via a dedicated test electrode, inducing a calibrated 10–14 g mechanical deflection. This produces a corresponding step change in VOUT, verifying both mechanical integrity and full analog signal chain functionality. Activation requires a logic-high pulse ≥100 µs on the ST pin; the STATUS pin reflects test initiation and latches faults independently.

What does the STATUS pin indicate on the MMA2204KEGR2?

The STATUS pin on the MMA2204KEGR2 is an open-drain output that latches high upon occurrence of any fault: EPROM parity error, internal clock frequency falling below 150 kHz, or supply voltage dropping below 3.25 V (LVD trip). It remains high until a rising edge is applied to ST - but only if the underlying fault condition has been resolved. During normal operation with no faults, STATUS floats high only when ST is asserted.

Is the MMA2204KEGR2 compatible with 3.3 V microcontrollers?

No - the MMA2204KEGR2 requires a 4.75–5.25 V supply and outputs a ratiometric analog voltage referenced to VDD (e.g., 2.5 V at 0g with 5 V supply). Interfacing with a 3.3 V MCU ADC requires level-shifting or scaling circuitry. Its STATUS pin is open-drain and can be pulled up to 3.3 V, but VDD must remain at 5 V. The MMA2204KEGR2 is not 3.3 V tolerant on any pin.

What packaging format does the MMA2204KEGR2 ship in?

The MMA2204KEGR2 ships in tape-and-reel format per EIA-481 standard, designated by the "R2" suffix. It uses a 16-lead SOIC package (Case 475-01), 7.5 mm × 10.3 mm body size, 1.27 mm lead pitch, and Pb-free (RoHS-compliant) finish. The "KEG" suffix explicitly denotes lead-free construction, and the device is qualified to AEC-Q100 Grade 2 for automotive use.