NXP Semiconductors KIT3109MMA7260QE

Overview

KIT3109MMA7260QE from NXP Semiconductors (formerly Freescale) is an evaluation board designed for the MMA7260QT 3-axis analog accelerometer, supporting selectable g-ranges of 1.5g/2g/4g/6g via DIP switch configuration. It provides on-board RC filtering, 3.3 V power interface, ON/OFF and sleep-mode controls, and direct X/Y/Z analog output pads for rapid prototyping and sensor characterization.

For engineers reviewing the KIT3109MMA7260QE datasheet, KIT3109MMA7260QE pinout, KIT3109MMA7260QE application, or KIT3109MMA7260QE equivalent, this board enables fast validation of g-select range switching, sleep mode current consumption (3 µA), static acceleration response (e.g., ZOUT @ +1g = 2.45 V), and mounting orientation effects without custom PCB design.

Technical Context

The KIT3109MMA7260QE implements a dedicated hardware interface for the MMA7260QT QFN-16 accelerometer, integrating decoupling capacitors, per-axis RC filters to suppress switched-capacitor clock noise, and dual control paths for sleep mode activation-via either DIP switch or external 3.3 V signal applied to the SLEEP pad. The board supports all four g-ranges defined by g-Select1/g-Select2 logic states.

It delivers calibrated analog outputs referenced to 1.65 V zero-g offset (XOUT/YOUT/ZOUT @ 0g), with full-scale voltage spans determined by selected sensitivity: e.g., 800 mV/g at 1.5g range yields ±1.2 V swing around 1.65 V. Power sequencing is managed through a main ON/OFF switch and independent sleep-mode enable, with visual status indication via PWR and SLEEP LEDs.

Key Specifications

Availability

KIT3109MMA7260QE is available at Aetrix Electronics and suitable for motion-sensing prototyping, industrial tilt detection, consumer electronics gesture evaluation, and educational sensor labs requiring stable component supply and RoHS-compliant development tools.

Supply support for KIT3109MMA7260QE 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

NXP Semiconductors acquired Freescale in 2015 and maintains legacy sensor product lines including the MMA7260 series. NXP is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.

KIT3109MMA7260QE belongs to NXP's legacy accelerometer evaluation kit family, developed to accelerate adoption of g-select analog accelerometers in cost-sensitive, low-power motion-sensing designs where configurable range and rapid physical validation are critical.

FAQ

What is the function of the SLEEP dip switch on the KIT3109MMA7260QE?

The SLEEP dip switch on the KIT3109MMA7260QE directly controls the SLEEP pin (pin 12) of the onboard MMA7260QT accelerometer. When set to ON, it applies VDD to the pin, disabling sleep mode and enabling full operation with 500 µA current draw. When OFF, the device enters 3 µA standby. The green SLEEP LED illuminates only when the switch is ON and the accelerometer is active.

How do I configure the KIT3109MMA7260QE for 4g measurement range?

To configure the KIT3109MMA7260QE for 4g range, set the g-Select DIP switches so that g-Select2 = 1 and g-Select1 = 0 - matching Table 1 in AN3109. This configures the MMA7260QT for 300 mV/g sensitivity, yielding ±1.2 V output swing around the 1.65 V zero-g baseline. Confirm switch positions before powering the board.

Does the KIT3109MMA7260QE require external components to operate?

No, the KIT3109MMA7260QE requires no external components for basic operation. It includes recommended decoupling capacitors at the power input and RC filters on all three analog outputs. Only a 3.3 V power source (via solder pads) and optional wiring to a microcontroller ADC are needed to acquire X/Y/Z acceleration data.

What is the zero-g output voltage for each axis on the KIT3109MMA7260QE?

Each axis (X, Y, Z) on the KIT3109MMA7260QE has a nominal zero-g output voltage of 1.65 V, as specified for the MMA7260QT. This mid-supply reference remains consistent across all g-ranges and is used to calculate acceleration: e.g., ZOUT = 2.45 V indicates +1g along the Z-axis, while ZOUT = 0.85 V indicates –1g.

Can the KIT3109MMA7260QE be powered by a battery?

Yes, the KIT3109MMA7260QE can be powered by a 3.3 V battery connected to the VDD and VSS solder pads. The main ON/OFF switch (S1) must be set to ON for power delivery, and the SLEEP dip switch should be configured per desired operating mode. Battery operation is optimized by using the SLEEP function to reduce current draw to 3 µA during idle periods.