NXP Semiconductors MMA1200D

Overview

MMA1200D from Freescale Semiconductor is a surface-mount, silicon capacitive, micromachined Z-axis accelerometer with ±250g full-scale range, factory-calibrated sensitivity of 8.0 mV/g/V at 5.0 V supply, and integrated 4th-order Bessel low-pass filter (f_–3dB = 400 Hz). It delivers ratiometric linear output, self-test verification, and operates across –40°C to +125°C for vibration and impact monitoring in harsh environments.

For engineers reviewing the MMA1200D datasheet, MMA1200D pinout, MMA1200D application, or MMA1200D equivalent, key selection considerations include its SOIC-16 package, ST/STATUS digital control and fault reporting interface, zero-g offset stability (±0.15 V), and calibrated self-test output of 55 g - all critical for safety-critical mechanical integrity validation.

Technical Context

The MMA1200D integrates a wafer-level hermetically sealed polysilicon g-cell transducer with a CMOS ASIC containing switched-capacitor signal conditioning, temperature compensation, and EPROM-trimmed calibration. Its analog front-end includes an integrator, gain stage, and 4-pole Bessel filter preserving pulse shape integrity without external components.

Self-test activation applies electrostatic force to the movable plate via dedicated ST pin, inducing known deflection; STATUS pin latches high on LVD (<3.25 V), clock monitor failure (<50 kHz), or EPROM parity error, and resets only upon ST pulse if faults are cleared.

Key Specifications

Pinout & Package

Package: 16-lead SOIC (Case 475-01), surface-mount, RoHS-compliant, with wafer-level hermetic seal for reliability in humid or thermally cycling environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXL202E and MMA8452Q, the MMA1200D uniquely combines ±250 g analog output, factory-calibrated self-test, Bessel-filtered bandwidth, and fault-latched STATUS signaling - making it irreplaceable for high-reliability, high-shock, analog-integrated industrial and automotive safety applications.

Availability

MMA1200D is available at Aetrix Electronics and suitable for vibration monitoring, impact recording, crash event detection, and drop-test validation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MMA1200D 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 aerospace-grade analog and mixed-signal ICs.

The MMA series was engineered specifically for high-reliability mechanical sensing in safety-critical systems - delivering calibrated analog acceleration data with built-in diagnostics, robust packaging, and wide-temperature operation.

FAQ

What is the full-scale acceleration range and axis orientation of the MMA1200D?

The MMA1200D is a single-axis Z-direction accelerometer with a full-scale range of ±250 g. When mounted per the datasheet side-view orientation, positive Z-axis acceleration (e.g., upward impact) increases the VOUT voltage above VDD/2, while negative Z acceleration decreases it. This directional sensitivity is fixed and cannot be reconfigured.

How does the self-test function work on the MMA1200D, and what output does it produce?

The MMA1200D self-test applies electrostatic force to the movable g-cell plate via the ST pin, generating a calibrated 55 g equivalent output step on VOUT. The response time is ≤10 ms to 90% of final value. This verifies both mechanical integrity (g-cell deflection) and electronic signal chain (ASIC conditioning and output stage) in one test.

What is the purpose and behavior of the STATUS pin on the MMA1200D?

The STATUS pin on the MMA1200D is an open-drain output that latches high upon occurrence of Low Voltage Detect (VDD < 3.25 V), clock monitor failure (<50 kHz), or EPROM parity error. It remains high until a ≥100 µs ST pulse resets it - provided no active fault persists. This enables persistent fault logging in safety-critical systems.

Does the MMA1200D require external passive components for basic operation?

The MMA1200D requires only two external components for reliable operation: a 0.1 µF ceramic capacitor between VDD and VSS for supply decoupling, and a 1 kΩ resistor + 0.01 µF capacitor RC filter on VOUT to suppress 70 kHz clock noise. No external filter components are needed for the 400 Hz Bessel response - it is fully integrated.

What is the operating temperature range and supply voltage specification for the MMA1200D?

The MMA1200D operates from –40°C to +125°C and is specified for supply voltages between 4.75 V and 5.25 V. Within this range, it maintains full calibration and linearity. Operation outside this voltage window may yield linear output but without guaranteed calibration accuracy - critical for precision measurement applications using the MMA1200D.