NXP Semiconductors KIT1925MMA6261Q

Overview

KIT1925MMA6261Q from Freescale Semiconductor is a dual-axis ±1.5g micromachined accelerometer evaluation kit designed to support rapid prototyping and functional validation of the MMA6261Q sensor IC. It delivers 300 Hz bandwidth, 1.2 mA supply current, ratiometric linear analog outputs (XOUT/YOUT), and integrated self-test capability in a 16-pin QFN-16 (6 mm × 6 mm) package. Used in tilt sensing, freefall detection, and motion-triggered appliance control.

For engineers reviewing the KIT1925MMA6261Q datasheet, KIT1925MMA6261Q pinout, KIT1925MMA6261Q application, or KIT1925MMA6261Q equivalent, this kit provides verified hardware interface, calibrated signal chain validation, and direct access to ST, XOUT, YOUT, VDD, and VSS for system-level integration testing under real-world mechanical and electrical conditions.

Technical Context

The KIT1925MMA6261Q implements a surface-micromachined capacitive g-cell with integrated ASIC signal conditioning, including a factory-trimmed 1-pole switched-capacitor low-pass filter and temperature compensation. Its dual-axis architecture enables simultaneous X/Y acceleration measurement without external components.

It supports ratiometric operation across 2.7–3.6 V supply, features self-test via logic-high ST input (0.7×VDD min), and delivers output offset at VDD/2 (1.65 V @ 3.3 V) with ±1.5g full-scale range and 800 mV/g typical sensitivity. Power-up response time is 2.0 ms.

Key Specifications

Availability

KIT1925MMA6261Q is available at Aetrix Electronics and suitable for tilt monitoring, freefall detection, and impact-sensitive appliance control requiring stable component supply and validated reference hardware.

Supply support for KIT1925MMA6261Q 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 global semiconductor company specializing in embedded processing, sensors, and connectivity solutions for automotive, industrial, and consumer applications.

The MMA6260Q series-including the MMA6261Q supported by KIT1925MMA6261Q-was engineered for cost-sensitive, low-power motion sensing in portable and appliance systems requiring factory-calibrated analog output and robust mechanical survivability.

FAQ

What is the primary purpose of the KIT1925MMA6261Q evaluation kit?

The KIT1925MMA6261Q evaluation kit is designed to accelerate development and validation of systems using the MMA6261Q dual-axis accelerometer. It provides a fully assembled PCB with proper decoupling, RC filtering, and breakout access to all critical pins (XOUT, YOUT, ST, VDD, VSS), enabling immediate functional testing, signal integrity analysis, and firmware integration without custom layout effort. The KIT1925MMA6261Q directly supports design-in of the MMA6261Q in production hardware.

Does the KIT1925MMA6261Q include the MMA6261Q sensor IC?

Yes, the KIT1925MMA6261Q contains one mounted MMA6261Q accelerometer IC in its native 16-pin QFN-16 package (Case 1477-02). The board implements the manufacturer-recommended layout: 0.1 µF VDD decoupling, 1 kΩ + 0.1 µF RC filters on XOUT/YOUT, grounded flag, and isolation from high-current traces - ensuring accurate characterization of the MMA6261Q's 300 Hz bandwidth and 1.2 mA supply current as specified in the official datasheet.

How is self-test performed using the KIT1925MMA6261Q?

Self-test on the KIT1925MMA6261Q is initiated by applying a logic-high signal (≥0.7×VDD) to the ST pin. This activates an internal electrostatic force that deflects the MEMS sensing mass, producing a calibrated output shift on XOUT and YOUT - typically ~0.9×VDD. The KIT1925MMA6261Q provides direct access to the ST pin and both analog outputs, allowing engineers to verify mechanical integrity, signal chain gain/offset, and ASIC functionality before system deployment.

Can the KIT1925MMA6261Q be used with 5 V microcontrollers?

No - the KIT1925MMA6261Q is designed exclusively for 2.7–3.6 V operation, matching the MMA6261Q's absolute maximum supply rating. Applying 5 V risks permanent damage. When interfacing with 5 V microcontrollers, level-shifting circuitry or a 3.3 V LDO regulator must be added externally. The KIT1925MMA6261Q's ratiometric outputs are optimized for use with 3.3 V ADC references to maintain measurement accuracy without additional scaling.

What mechanical mounting guidance does the KIT1925MMA6261Q provide?

The KIT1925MMA6261Q follows Freescale's recommended PCB layout: ground plane beneath the QFN, no traces/vias under the package, solder mask defined pads, and flag (exposed thermal pad) connected to VSS. This minimizes noise coupling and ensures thermal stability during operation. The board serves as a physical reference for mechanical mounting orientation - X and Y axes are labeled, and the top-view pinout matches Figure 1 in the MMA6261Q datasheet, enabling correct alignment in tilt or motion-sensing applications.