NXP Semiconductors MMA6361LR2

Overview

MMA6361LR2 from Freescale Semiconductor is a low-power, dual-axis capacitive MEMS accelerometer with integrated signal conditioning, selectable ±1.5g/±6g range, 800 mV/g sensitivity at 1.5g, 400 μA active current, and Sleep Mode (3 μA). It serves as a motion-sensing front-end in battery-powered handheld devices for tilt, gesture, and event detection.

For engineers reviewing the MMA6361LR2 datasheet, MMA6361LR2 pinout, MMA6361LR2 application, or MMA6361LR2 equivalent, key selection criteria include its ratiometric analog outputs, g-Select logic-controlled range switching, fast 0.5 ms enable response, LGA-14 package footprint, and temperature-compensated offset stability across –40°C to +85°C.

Technical Context

The MMA6361LR2 implements a surface-micromachined polysilicon g-cell with differential capacitive sensing, paired with an ASIC using switched-capacitor measurement and filtering. Its internal 1-pole low-pass filter operates without external components, and output voltage scales ratiometrically with VDD (2.2–3.6 V).

Control logic interprets g-Select (Pin 10) and Sleep (Pin 7) inputs to switch full-scale range and enter ultra-low-power mode. Zero-g offset and sensitivity are factory-trimmed via NVM, eliminating external calibration; temperature compensation is applied per-axis for offset (±2 mg/°C) and sensitivity (±0.0075 %/°C).

Key Specifications

Pinout & Package

Package: 3 mm × 5 mm × 1.0 mm LGA-14 (Case 1977-01), bottom-terminal land grid array with exposed thermal pad (GND-connected).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-axis analog accelerometer applications.

Compared with LIS3LV02DL and ADXL322, the MMA6361LR2 uniquely combines ratiometric analog outputs, hardware-selectable range, sub-μA sleep current, and factory-trimmed offset-making it optimal for cost-sensitive, battery-constrained consumer motion interfaces where analog simplicity and rapid wake-up are critical.

Availability

MMA6361LR2 is available at Aetrix Electronics and suitable for handheld gaming controllers, laptop anti-theft systems, and mobile phone motion-dialing applications requiring stable component supply and RoHS-compliant packaging.

Supply support for MMA6361LR2 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 markets.

The MMA6361LR2 belongs to Freescale's Xtrinsic™ family of intelligent sensors, designed specifically for ultra-low-power motion awareness in portable electronics-emphasizing analog simplicity, minimal external components, and seamless integration with resource-constrained MCUs.

FAQ

What is the function of the g-Select pin on the MMA6361LR2?

The g-Select pin (Pin 10) is a logic input that selects full-scale range: low = ±1.5g (800 mV/g), high = ±6g (206 mV/g). The MMA6361LR2 includes an internal pull-down, so leaving g-Select unconnected defaults the device to ±1.5g mode. This hardware-selectable feature enables flexible motion detection without firmware reconfiguration.

How does the MMA6361LR2 achieve ratiometric output behavior?

The MMA6361LR2 achieves ratiometric output by scaling both zero-g offset and sensitivity linearly with VDD. At 3.3 V supply, zero-g is 1.65 V and sensitivity is 800 mV/g; at 2.5 V, both scale proportionally. This eliminates supply-induced errors when interfacing with an MCU's internal ADC, as the reference and signal track together-critical for accurate motion measurement in the MMA6361LR2.

What is the recommended external capacitance for the MMA6361LR2 outputs?

A 3.3 nF capacitor is recommended on each analog output (XOUT and YOUT) to minimize clock noise from the internal switched-capacitor filter. This value sets the output bandwidth to ~1.5 kHz, which exceeds the device's 400 Hz signal bandwidth while effectively suppressing internal sampling noise-ensuring clean analog signals from the MMA6361LR2 in real-world PCB layouts.

Can the MMA6361LR2 operate without external passive components?

Yes-the MMA6361LR2 requires only a 0.1 μF VDD decoupling capacitor and optional 3.3 nF output capacitors. Its onboard switched-capacitor filter, factory-trimmed offset/sensitivity, and ratiometric architecture eliminate the need for external resistors, trim pots, or calibration ICs. This minimizes BOM count and board space for the MMA6361LR2 in compact portable designs.

What is the maximum mechanical shock the MMA6361LR2 can survive?

The MMA6361LR2 is rated for ±5000 g mechanical shock across all axes, verified per JEDEC standards. This robustness enables reliable operation in handheld devices subject to frequent drops or impacts-such as smartphones, tablets, and gaming peripherals-without performance degradation or failure of the MMA6361LR2.