NXP Semiconductors KIT3376MMA7361L

Overview

KIT3376MMA7361L from Freescale Semiconductor is an evaluation kit for the MMA7361L ±1.5g/±6g 3-axis capacitive micromachined accelerometer in LGA-14 package, featuring factory-trimmed zero-g offset, selectable sensitivity, 0g-detect for freefall protection, and sleep mode drawing only 3 μA. It enables rapid prototyping of motion-sensing functions in handheld battery-powered devices.

For engineers reviewing the KIT3376MMA7361L datasheet, KIT3376MMA7361L pinout, KIT3376MMA7361L application, or KIT3376MMA7361L equivalent, this kit provides validated hardware interface, self-test verification, g-select configuration, and analog output signal conditioning - critical for HDD freefall detection, laptop anti-theft, and mobile image stabilization designs.

Technical Context

The KIT3376MMA7361L implements a surface-micromachined g-cell sensor with integrated ASIC signal conditioning, including a switched-capacitor 1-pole low-pass filter (f_-3dB = 400 Hz XY / 300 Hz Z), ratiometric analog outputs (XOUT/YOUT/ZOUT), and digital control logic for Sleep, g-Select, Self Test, and 0g-Detect functions.

It supports dual-range operation (800 mV/g at ±1.5g; 206 mV/g at ±6g), operates from 2.2 V to 3.6 V, achieves 0.5 ms enable response time, and delivers temperature-compensated performance across –40°C to +85°C with <±0.5 mg/°C offset drift and <±0.0075 %/°C sensitivity drift.

Key Specifications

Availability

KIT3376MMA7361L is available at Aetrix Electronics and suitable for motion-sensing evaluation, freefall protection validation, and tilt-compensation prototyping requiring stable component supply and traceable development hardware.

Supply support for KIT3376MMA7361L 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 pioneer in MEMS sensor integration, delivering high-reliability, low-power motion sensing solutions for consumer and industrial applications.

The KIT3376MMA7361L belongs to Freescale's legacy motion sensor evaluation platform family, designed specifically to accelerate development of freefall detection, pedometer, e-compass tilt compensation, and motion-triggered UI features using the MMA7361L accelerometer.

FAQ

What is the primary purpose of the KIT3376MMA7361L?

The KIT3376MMA7361L is an evaluation kit designed to demonstrate and validate the functionality of the MMA7361L 3-axis accelerometer IC. It provides a ready-to-use PCB with proper decoupling, filtering, and interface circuitry - enabling engineers to verify analog output behavior, 0g-detect timing, self-test response, and g-select switching without custom layout. The KIT3376MMA7361L does not contain the MMA7361L as a replaceable component but integrates it as the core sensing element.

Does the KIT3376MMA7361L include the MMA7361L IC?

Yes, the KIT3376MMA7361L includes one pre-mounted MMA7361L IC in its 14-lead LGA package (Case 1977-01). The board implements all recommended connections per Freescale AN3447 and AN3484, including 0.1 µF VDD decoupling, 3.3 nF output filtering, ground plane layout, and pull-up/down resistors for Sleep, g-Select, and Self Test pins - ensuring accurate characterization of the MMA7361L under real-world conditions.

Can the KIT3376MMA7361L be used to evaluate both ±1.5g and ±6g ranges?

Yes, the KIT3376MMA7361L supports full evaluation of both sensitivity modes. Its onboard g-Select control line allows dynamic switching between ±1.5g (800 mV/g) and ±6g (206 mV/g) ranges, and the analog outputs (XOUT/YOUT/ZOUT) scale accordingly. Measured output voltages align with datasheet specifications: e.g., +1g yields ~2.45 V at 1.5g range and ~2.06 V at 6g range when VDD = 3.3 V - enabling precise range selection for applications like pedometer (high sensitivity) versus shock detection (wide range).

How does the 0g-Detect feature work on the KIT3376MMA7361L?

On the KIT3376MMA7361L, the MMA7361L's 0g-Detect pin outputs a logic-high signal when acceleration on all three axes falls within ±0.4 g - indicating linear freefall. This open-drain output is pulled up on the evaluation board and can directly drive a microcontroller interrupt pin. Engineers use this signal to trigger HDD head parking, laptop data backup, or anti-theft alerts. The KIT3376MMA7361L validates timing (response <2 ms) and noise immunity per Freescale's specified 0g threshold and hysteresis.

Is the KIT3376MMA7361L compatible with modern microcontrollers?

Yes, the KIT3376MMA7361L interfaces seamlessly with standard 3.3 V microcontrollers via ratiometric analog outputs and TTL/CMOS-compatible digital control lines (Sleep, g-Select, Self Test, 0g-Detect). Its 32 kΩ internal output impedance and recommended 10 MΩ+ input impedance on MCU ADC channels ensure minimal loading error. The board's layout follows best practices for noise reduction - making it suitable for direct connection to STM32, ESP32, nRF52, and similar platforms without signal conditioning.