NXP Semiconductors MMA1210D

Overview

MMA1210D from Freescale Semiconductor (formerly Motorola) is a surface-mount, silicon capacitive, micromachined Z-axis accelerometer with integrated signal conditioning, 4th-order Bessel low-pass filter, and factory-calibrated self-test. It delivers ±100g measurement range, ratiometric linear output, and operates from –40°C to +125°C on 4.75–5.25 V supply. Used in vibration and impact monitoring systems requiring high-shock survivability and hermetic reliability.

For engineers reviewing the MMA1210D datasheet, MMA1210D pinout, MMA1210D application, or MMA1210D equivalent, this page provides verified technical context, SOIC-16 package mapping, self-test timing (≤10 ms), status fault latching behavior, and calibrated sensitivity of 20.0 mV/g/V - all critical for automotive safety and industrial condition monitoring designs.

Technical Context

The MMA1210D integrates a polysilicon g-cell transducer sealed at wafer level and a CMOS ASIC performing switched-capacitor sensing, temperature compensation, and 4-pole Bessel filtering (f_–3dB = 360–440 Hz). Its ratiometric output scales linearly with V_DD, enabling supply-noise rejection when interfaced to microcontroller ADCs.

Self-test applies electrostatic force to the movable plate via dedicated ST pin, producing a calibrated 55–95 g output response; STATUS pin latches high on LVD trip (V_LVD = 3.25 V typ), clock monitor failure (<50 kHz), or EPROM parity error - resettable only by ≥100 µs ST pulse if fault persists.

Key Specifications

Pinout & Package

Package: 16-lead SOIC (Case 475-01), surface-mount, 10.15–10.45 mm × 7.40–7.60 mm × 3.30–3.55 mm body, 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXL202E and MMA8451Q, the MMA1210D uniquely combines ±100g analog range, wafer-level hermetic sealing, and calibrated electrostatic self-test - making it irreplaceable in automotive crash sensors and industrial shock recorders where analog signal integrity and mechanical verification are non-negotiable.

Availability

MMA1210D is available at Aetrix Electronics and suitable for vibration monitoring, impact recording, and automotive safety systems requiring stable component supply across extended temperature ranges and long lifecycle commitments.

Supply support for MMA1210D 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) was a leading designer of embedded controllers and sensors, known for automotive-grade reliability and robust analog/mixed-signal ICs.

The MMA series was engineered specifically for high-shock, high-temperature environments such as airbag control units and industrial condition monitoring - prioritizing hermeticity, self-test verifiability, and ratiometric analog output stability.

FAQ

What is the operating temperature range of the MMA1210D?

The MMA1210D operates across –40°C to +125°C, validated per its datasheet specifications. This extended range supports under-hood automotive use and industrial environments where thermal cycling exceeds standard commercial limits. The device maintains calibrated performance throughout this range due to on-chip temperature compensation circuitry, and the MMA1210D's wafer-level hermetic seal prevents moisture-related drift at high temperatures.

Does the MMA1210D require external components for basic operation?

The MMA1210D requires only two external components for functional operation: a 0.1 µF decoupling capacitor on VDD and an RC filter (1 kΩ + 0.01 µF) on VOUT to suppress switched-capacitor clock noise. No external trim resistors, calibration DACs, or filter passives are needed - zero-g offset, sensitivity, and filter cutoff are factory-set. All other pins (1–3, 9–16) are N/C and must remain unconnected to ensure MMA1210D specification compliance.

How does the self-test function verify both mechanical and electrical integrity of the MMA1210D?

The MMA1210D self-test applies a calibrated electrostatic force to the movable g-cell plate via the ST pin, inducing a known deflection equivalent to 55–95 g. The resulting output voltage on VOUT confirms ASIC signal chain functionality, while mechanical response validates g-cell suspension integrity. Simultaneously, STATUS pin behavior - latching high during test and resetting cleanly - verifies I/O logic and fault latch operation. This dual-path validation is documented in the MMA1210D datasheet Section 4 and is essential for ASIL-B compliance.

What fault conditions cause the STATUS pin of the MMA1210D to assert high?

The STATUS pin of the MMA1210D asserts high and latches when any of three internal faults occur: supply voltage drops below the Low Voltage Detect threshold (2.7–4.0 V), clock oscillator frequency falls below 50 kHz, or EPROM parity becomes odd. The pin remains high until a ≥100 µs ST pulse is applied - unless the fault persists. This behavior is explicitly defined in the MMA1210D Operating Characteristics table and enables single-wire system-level diagnostics without additional monitoring circuitry.

Is the MMA1210D pin-compatible with other devices in the MMA series?

The MMA1210D shares the same SOIC-16 (Case 475-01) package and pinout with MMA1210DR2, but differs from MMA1220D (±200g) and MMA1240D (±400g) in sensitivity and range - though all retain identical ST/VOUT/STATUS/VDD/VSS placement. Pin compatibility is limited to same-suffix variants; substituting different-range MMA parts requires recalibration and may exceed output voltage limits. The MMA1210D datasheet confirms pin assignment consistency only within the MMA1210x family.