NXP Semiconductors MMA2300D

Overview

MMA2300D from Freescale Semiconductor is a surface-mount, silicon capacitive micromachined accelerometer with X-axis sensitivity, ±250g full-scale range, ratiometric linear output, and integrated 4th-order Bessel low-pass filter. It delivers calibrated self-test, temperature compensation, and hermetic wafer-level sealing for vibration monitoring and impact detection in harsh automotive and industrial environments.

For engineers reviewing the MMA2300D datasheet, MMA2300D pinout, MMA2300D application, or MMA2300D equivalent, key selection criteria include its SOIC-16 package, 360–440 Hz bandwidth, 7.6–8.4 mV/g sensitivity at 5.0 V supply, status-fault latching capability, and ESD-sensitive handling requirements.

Technical Context

The MMA2300D integrates a polysilicon g-cell transducer with a CMOS ASIC featuring switched-capacitor signal conditioning, on-chip EPROM trim, clock generator, and self-test control logic. Its ratiometric architecture ensures output offset and sensitivity scale linearly with VDD (4.75–5.25 V), enabling direct interface to microcontroller ADCs without external calibration.

It implements a factory-set 4-pole Bessel filter preserving pulse shape integrity, with no external components required. Fault detection includes low-voltage detect (trip at 2.7–4.0 V), clock monitor (50–260 kHz), and EPROM parity check - all reported via the open-drain STATUS pin.

Key Specifications

Pinout & Package

Package: 16-lead SOIC (Case 475-01), surface-mount, RoHS-compliant, with hermetically sealed wafer-level cap.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXL202E and MMA2260D, the MMA2300D uniquely combines X-axis ±250g range, calibrated self-test, and latched STATUS reporting in a single SOIC-16 package - making it the only option among the three qualified for automotive crash sensing and industrial drop-test verification where functional safety diagnostics are required.

Availability

MMA2300D is available at Aetrix Electronics and suitable for vibration monitoring systems, automotive crash sensors, industrial drop-test recorders, and heavy equipment impact loggers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MMA2300D 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, analog, and sensor solutions for automotive, industrial, and consumer markets.

The MMA series was designed specifically for high-reliability inertial sensing in safety-critical and harsh-environment applications - emphasizing calibrated self-test, hermetic sealing, and integrated signal conditioning to eliminate external component dependencies.

FAQ

What is the full-scale acceleration range of the MMA2300D?

The MMA2300D has a full-scale acceleration range of ±250 g along its designated X-axis. This range is factory-set and does not require external configuration. The device maintains linearity and specified performance across this range under operating conditions of –40°C to +105°C and supply voltage between 4.75 V and 5.25 V. Its 2000 g unpowered survivability rating further ensures robustness during handling and non-operational shock events.

Does the MMA2300D require external components for basic operation?

The MMA2300D requires minimal external components: a 0.1 µF decoupling capacitor on VDD and an RC filter (1 kΩ + 0.01 µF) on VOUT to suppress clock noise from the internal switched-capacitor filter. No external resistors or capacitors are needed to set zero-g offset, sensitivity, or filter cutoff - all are factory-trimmed and temperature-compensated. The STATUS pin may require a pull-up resistor for proper logic-level interpretation in the host system.

How does the self-test function work on the MMA2300D?

The MMA2300D self-test applies a calibrated electrostatic force to the movable g-cell plate via the ST pin, producing a 24 g equivalent output response. When a logic-high pulse ≥100 µs is applied to ST, the internal ASIC drives the test plate, deflecting the central mass and generating a proportional analog output on VOUT. This validates both mechanical integrity (g-cell) and electronic signal chain (ASIC, filter, output stage) - a capability confirmed in the Rev 5 datasheet and used in automotive airbag diagnostics.

What fault conditions trigger the STATUS pin on the MMA2300D?

The STATUS pin on the MMA2300D latches high upon detection of any of three fault conditions: supply voltage falling below the low-voltage detect (LVD) threshold (2.7–4.0 V), internal clock frequency dropping below 50 kHz, or EPROM parity becoming odd. The latch remains asserted until cleared by a valid ST pulse - unless the underlying fault persists. This behavior is documented in Table 2 and the "Status" section of the MMA2300D datasheet.

Is the MMA2300D RoHS-compliant and lead-free?

Yes, the MMA2300D is RoHS-compliant and lead-free, as explicitly stated in the Rev 5 datasheet (03/2006): "RoHS-compliant and/or Pb-free versions of Freescale products have the functionality and electrical characteristics of their non-RoHS-compliant and/or non-Pb-free counterparts." The EG suffix denotes the Pb-free variant, while the D suffix (as in MMA2300D) indicates the standard leaded version - both share identical electrical and mechanical specifications.