NXP Semiconductors MMA1200EG

Overview

MMA1200EG from Freescale Semiconductor is a surface-mount, silicon capacitive, micromachined Z-axis accelerometer with ±250g full-scale range, ratiometric linear output, and integrated 4th-order Bessel low-pass filter (400 Hz typical –3 dB bandwidth). It features factory-calibrated zero-g offset and sensitivity, self-test capability, and operates across –40°C to +125°C in SOIC-16 package. Used in vibration and impact monitoring systems requiring high-shock survivability and hermetic reliability.

For engineers reviewing the MMA1200EG datasheet, MMA1200EG pinout, MMA1200EG application, or MMA1200EG equivalent, this page delivers verified technical context, validated pin functions, real-world use scenarios, and confirmed alternative options for industrial sensing designs where calibrated analog acceleration output and system-level fault detection are required.

Technical Context

The MMA1200EG implements a micromachined polysilicon g-cell transducer sealed at wafer level, paired with a CMOS ASIC that performs switched-capacitor signal conditioning, temperature compensation, and 4-pole Bessel filtering - all without external components. Its ratiometric output scales linearly with VDD (4.75–5.25 V), enabling supply-noise rejection when interfaced with ADCs.

Self-test applies electrostatic force to deflect the movable plate, producing a calibrated 55g–95g output response; status pin latches high on LVD trip (3.25 V typ), clock monitor failure (<50 kHz), or EPROM parity error, and resets only via ST pin pulse if faults clear.

Key Specifications

Pinout & Package

Package: 16-lead SOIC (Case 475-01), Pb-free, RoHS-compliant, surface-mountable with standard reflow profile.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar accelerometer applications.

Compared with ADXL206 and MMA8452Q, the MMA1200EG uniquely delivers high-g analog output with integrated fault diagnostics and self-test in a simple 2-wire (VDD/VSS) + signal + STATUS configuration - critical for safety-critical analog recording where digital bus latency or limited range would compromise functionality.

Availability

MMA1200EG is available at Aetrix Electronics and suitable for vibration monitoring, impact testing, automotive event data recording, and condition-based maintenance systems requiring stable component supply, long-lifecycle support, and RoHS-compliant Pb-free packaging.

Supply support for MMA1200EG 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 processing, sensors, and analog solutions for automotive, industrial, and consumer markets.

The MMA1200EG belongs to Freescale's micromachined accelerometer product line, designed specifically for high-reliability analog acceleration sensing in harsh environments where hermetic sealing, self-test validation, and deterministic analog output are mandatory.

FAQ

What is the full-scale acceleration range of the MMA1200EG?

The MMA1200EG has a full-scale acceleration range of ±250g along its sensitive Z-axis. This range is factory-set and does not require external calibration components. The device maintains linearity and specified performance across this range when operated within its supply voltage (4.75–5.25 V) and temperature (–40°C to +125°C) limits. Output saturates beyond ±250g but recovers fully within 0.2 ms after saturation.

Does the MMA1200EG require external passive components for filtering?

No, the MMA1200EG integrates a 4th-order switched-capacitor Bessel filter with a typical –3 dB bandwidth of 400 Hz; no external resistors or capacitors are needed to set cutoff frequency. However, an external RC filter (1 kΩ + 0.01 µF) is recommended on the VOUT pin to suppress residual clock noise from the internal switched-capacitor circuitry, as specified in the Freescale application notes.

How does the self-test function verify system integrity in the MMA1200EG?

The MMA1200EG self-test applies a calibrated electrostatic force to the movable g-cell plate via the ST pin, generating a 55g–95g-equivalent output response. This validates both mechanical deflection capability and full electronic signal path - including ASIC readout, gain stages, and analog output driver. The test can be performed at any time, and the STATUS pin reflects fault conditions independently, allowing concurrent health monitoring.

What does "ratiometric output" mean for the MMA1200EG, and why is it beneficial?

Ratiometric output means the MMA1200EG's zero-g offset (2.5 V typ at 5.0 V VDD) and sensitivity (8.0 mV/g/V typ) scale linearly with supply voltage. When interfaced with an ADC using the same VDD as its reference, supply fluctuations cancel out in the digitized result - eliminating the need for a separate precision voltage reference and improving system-level accuracy without added components.

Is the MMA1200EG pin-compatible with the MMA1200D?

Yes, the MMA1200EG is a Pb-free (RoHS-compliant) variant of the MMA1200D and shares identical pinout, electrical specifications, mechanical dimensions, and functional behavior. Both use Case 475-01 SOIC-16 packaging and have identical pin assignments, thermal characteristics, and operating ranges. The EG suffix denotes lead-free finish only - no design or layout changes are required when substituting MMA1200EG for MMA1200D.