NXP Semiconductors MMA2202KEGR2

Overview

MMA2202KEGR2 from Freescale Semiconductor is a surface-mount, silicon capacitive, micromachined accelerometer with integrated signal conditioning, 4th-order Bessel low-pass filter, and factory-calibrated ±50g full-scale range. It delivers ratiometric linear output (0.50 VDD mV/g/V), operates from –40°C to +105°C, and features self-test, status fault reporting, and AEC-Q100 Grade 2 qualification for automotive and industrial vibration monitoring.

For engineers reviewing the MMA2202KEGR2 datasheet, MMA2202KEGR2 pinout, MMA2202KEGR2 application, or MMA2202KEGR2 equivalent, this device requires attention to its SOIC-16 pin assignment (3 N/C pins, ST input, VOUT analog output, STATUS fault flag), supply voltage dependency (4.75–5.25 V), and clock-noise mitigation via RC filtering - critical for precision motion sensing in embedded control systems.

Technical Context

The MMA2202KEGR2 implements a micromachined polysilicon g-cell transducer hermetically sealed at wafer level, paired with a CMOS ASIC using switched-capacitor techniques for capacitance-to-voltage conversion. Its 4-pole Bessel filter (f_–3dB = 360–440 Hz) preserves pulse shape integrity without external components.

Self-test applies electrostatic force to deflect the center plate, generating a calibrated 10–12 g output response. Fault detection includes low-voltage detect (VLVD = 2.7–4.0 V), clock monitor (f_min = 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), Pb-free, RoHS-compliant, surface-mountable with standard reflow profile. Dimensions: 9.65 mm × 5.97 mm × 1.45 mm (L × W × H).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADXL202E and MMA8451Q, the MMA2202KEGR2 provides higher full-scale range (±50 g), analog ratiometric output compatible with legacy ADCs, and integrated fault reporting - making it uniquely suited for ruggedized single-axis vibration monitoring where reliability and self-diagnostics are mandatory.

Availability

MMA2202KEGR2 is available at Aetrix Electronics and suitable for vibration monitoring, appliance control, hard drive protection, and bearing health assessment requiring stable component supply across automotive, industrial, and computing applications.

Supply support for MMA2202KEGR2 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 connectivity solutions for automotive, industrial, and consumer markets.

The MMA series was designed as a family of robust, calibrated, single-axis accelerometers for mission-critical motion sensing - emphasizing wafer-level hermeticity, self-test, and AEC-Q100 compliance for under-hood and chassis-mounted automotive systems.

FAQ

What is the operating temperature range for the MMA2202KEGR2?

The MMA2202KEGR2 is qualified for operation from –40°C to +105°C and meets AEC-Q100 Grade 2 requirements. This range covers under-hood automotive environments and industrial enclosures where thermal stability is critical. The device includes on-chip temperature compensation to maintain sensitivity and offset accuracy across this full span, as verified in Table 2 of the Freescale technical data sheet.

Does the MMA2202KEGR2 require external passive components for filtering?

No, the MMA2202KEGR2 integrates a 4-pole switched-capacitor Bessel filter with factory-set cutoff frequency (360–440 Hz). However, an external RC filter (1 kΩ + 0.01 μF) is required on the VOUT pin to suppress clock noise from the internal oscillator - a mandatory design requirement specified in Figure 5 and Table 2 of the datasheet.

How does the self-test function work on the MMA2202KEGR2?

The MMA2202KEGR2 self-test applies electrostatic force to the micromachined g-cell center plate via a dedicated fourth electrode. When a logic-high pulse ≥100 μs is applied to the ST pin, the resulting deflection produces a calibrated 10–12 g equivalent output on VOUT. This verifies both mechanical integrity and full signal chain functionality - including ASIC conditioning, filtering, and output driver - without external stimulus.

What fault conditions does the STATUS pin indicate on the MMA2202KEGR2?

The STATUS pin on the MMA2202KEGR2 goes high to indicate any of three fault conditions: supply voltage falling below the low-voltage detect threshold (2.7–4.0 V), internal clock frequency dropping below 150–400 kHz, or EPROM parity becoming odd. The latch remains asserted until cleared by a valid ST pulse - enabling reliable system-level fault logging even during brown-out events.

Is the MMA2202KEGR2 pin-compatible with other devices in the MMA2202 family?

Yes, the MMA2202KEGR2 shares identical SOIC-16 pinout, electrical characteristics, and functional block diagram with MMA2202EG, MMA2202EGR2, and MMA2202KEG. The KEG suffix denotes Pb-free construction, and the R2 suffix indicates tape-and-reel packaging - both are footprint- and function-compatible replacements per Freescale's ordering information table.