NXP Semiconductors MMA2201D

Overview

MMA2201D from Freescale Semiconductor is a single-axis (X-axis), ±40g silicon capacitive micromachined accelerometer with integrated signal conditioning, 4th-order Bessel low-pass filter, and factory-calibrated self-test. It delivers ratiometric linear output (50 mV/g/V typical sensitivity), operates from 4.75–5.25 V, draws 5.0 mA typical supply current, and supports –40°C to +105°C industrial temperature range - used in hard drive protection and appliance control systems.

For engineers reviewing the MMA2201D datasheet, MMA2201D pinout, MMA2201D application, or MMA2201D equivalent, this page provides verified technical context, SOIC-16 pin mapping, real-world use scenarios, and validated alternative options for vibration monitoring, mechanical bearing diagnostics, and motion-sensitive input devices.

Technical Context

The MMA2201D implements a surface-micromachined polysilicon g-cell transducer hermetically sealed at wafer level, paired with a CMOS ASIC that performs switched-capacitor sensing, temperature compensation, and 360–440 Hz bandwidth filtering. Its ratiometric architecture ensures output offset and sensitivity scale linearly with VDD, enabling robust A/D interfacing without external reference voltage.

Self-test functionality applies electrostatic force via a dedicated fourth plate to deflect the movable mass, producing a calibrated 10–12 g output response. Fault detection includes low-voltage detect (2.7–4.0 V trip), clock monitor (150–400 kHz), and EPROM parity check - all latched to the STATUS pin and resettable via ST pulse.

Key Specifications

Pinout & Package

Package: 16-lead SOIC (Case 475-01), surface-mount, RoHS-compliant. Dimensions: 9.65 mm × 5.97 mm × 1.45 mm (L × W × H). Thermal pad not present; no exposed die attach pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMA2201D, ADXL322 offers higher bandwidth but sacrifices diagnostic features and temperature range, while MMA2202D maintains identical architecture and footprint at half the range - enabling direct substitution only where ±20g suffices.

Availability

MMA2201D is available at Aetrix Electronics and suitable for hard drive protection, appliance control, and computer peripheral design requiring stable component supply across extended temperature and shock environments.

Supply support for MMA2201D 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 company specializing in embedded processing, sensors, and analog solutions before its acquisition by NXP in 2015; its legacy sensor portfolio remains widely deployed in industrial and automotive systems.

The MMA series was designed specifically for cost-sensitive, high-reliability motion sensing in consumer electronics and industrial controls - emphasizing factory-calibrated performance, self-test capability, and robust packaging without external components.

FAQ

What is the sensing axis orientation of the MMA2201D?

The MMA2201D is a single-axis accelerometer with defined X-axis sensitivity. When mounted in standard top-view orientation (pin 1 top-left), positive acceleration along the +X direction increases the VOUT voltage above VDD/2. Gravity applied in the +X direction produces a +1g output, confirming mechanical alignment per datasheet Figure 6.

Does the MMA2201D require external passive components for basic operation?

No - the MMA2201D integrates signal conditioning, temperature compensation, and a 4-pole switched-capacitor Bessel filter. Only two external components are recommended: a 0.1 µF ceramic capacitor on VDD for decoupling and a 1 kΩ + 0.01 µF RC filter on VOUT to suppress clock noise. No external gain, offset, or filter tuning components are needed.

How does the self-test function verify system integrity in the MMA2201D?

The MMA2201D self-test applies electrostatic force to the movable g-cell plate via a dedicated fourth electrode, inducing a calibrated 10–12 g mechanical deflection. This generates a proportional analog output on VOUT, confirming both transducer mobility and signal chain functionality - including ASIC sensing, filtering, and output driver stages - without requiring external test equipment.

What fault conditions trigger the STATUS pin on the MMA2201D?

The STATUS pin on the MMA2201D goes high and latches when any of three internal faults occur: supply voltage drops below the LVD threshold (2.7–4.0 V), internal clock frequency falls outside 150–400 kHz, or EPROM parity becomes odd. The latch resets only after a valid ST pulse ≥100 µs - unless the fault persists.

Is the MMA2201D RoHS-compliant and lead-free?

Yes - the MMA2201D is RoHS-compliant and Pb-free (EG suffix variant exists), with identical electrical performance and functionality to non-RoHS versions. The SOIC-16 package (Case 475-01) meets JEDEC standards for lead-free reflow profiles, and no performance derating applies for Pb-free assembly.