My Inquiry
My Account
NXP Semiconductors MMA7361LCT
- Part No.:
- MMA7361LCT
- Manufacturer:
- NXP Semiconductors
- Category:
- Accelerometers
- Package:
- 14-TFLGA
- Datasheet:
-
MMA7361LCT.pdf
- Description:
- ACCEL 1.5-6G ANALOG 14LGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,294
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMA7361LCT from Freescale Semiconductor is a 3-axis capacitive MEMS accelerometer with integrated signal conditioning, selectable ±1.5g/±6g range, 0g-detect for freefall protection, self-test capability, and sleep mode. It delivers 800 mV/g sensitivity at ±1.5g, operates from 2.2–3.6 V, and draws only 400 μA active or 3 μA in sleep-ideal for battery-powered motion sensing in portable electronics.
For engineers reviewing the MMA7361LCT datasheet, MMA7361LCT pinout, MMA7361LCT application, or MMA7361LCT equivalent, key selection criteria include its ratiometric analog outputs (XOUT/YOUT/ZOUT), g-Select logic-controlled range switching, 0g-Detect interrupt output, Sleep Mode enable timing (0.5 ms), and LGA-14 package compatibility with space-constrained PCB layouts.
Technical Context
The MMA7361LCT integrates a surface-micromachined polysilicon g-cell sensor with an ASIC that performs switched-capacitor C-to-V conversion, temperature-compensated gain control, and a single-pole switched-capacitor low-pass filter (f−3dB = 400 Hz XY / 300 Hz Z). Its internal NVM trims zero-g offset and sensitivity during factory calibration.
It features dedicated digital I/Os: Sleep (active-low enable), g-Select (logic-level range selection), 0g-Detect (open-drain logic-high output when all axes read ~0g), and Self Test (electrostatic actuation input). All analog outputs are ratiometric to VDD and require no external components for basic operation beyond recommended 3.3 nF output filtering and 0.1 µF VDD decoupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.2 V to 3.6 V - Enables direct interface with 2.5 V/3.3 V microcontrollers without level-shifting. |
| Active Current | 400 μA typical - Supports >1-year battery life in intermittent-sampling handheld devices. |
| Sleep Current | 3 μA typical - Reduces power by >99% versus active mode for ultra-low-power wake-on-motion designs. |
| Sensitivity (±1.5g) | 800 mV/g - Delivers ~1.3 V full-scale swing (0.15–2.85 V) at 3.3 V supply, easing ADC resolution requirements. |
| Bandwidth (XY) | 400 Hz - Sufficient for human-motion detection (e.g., pedometer, tilt UI) while rejecting high-frequency vibration noise. |
| 0g-Detect Output | Digital open-drain signal - Directly interfaces to MCU interrupt pins for freefall-triggered HDD park or laptop lock without external logic. |
| Self Test Response | 2.0 ms - Confirms mechanical integrity and signal chain functionality before system deployment or after shock events. |
Pinout & Package
Package: 3 mm × 5 mm × 1.0 mm LGA-14 (Case 1977-01), RoHS-compliant, surface-mountable with solder-mask-defined footprint per AN3484.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8, 11, 12, 14 | N/C | No internal connection - Must remain unconnected; floating or tied to ground may disrupt calibration. |
| 2 (XOUT) | Analog Output | Ratiometric voltage proportional to X-axis acceleration (1.65 V @ 0g, ±0.8 V full-scale in ±1.5g mode). |
| 3 (ZOUT) | Analog Output | Ratiometric voltage proportional to Z-axis acceleration - Used for vertical orientation detection and freefall confirmation. |
| 4 (YOUT) | Analog Output | Ratiometric voltage proportional to Y-axis acceleration - Completes 3D motion vector for tilt compensation or gesture recognition. |
| 5 (VSS) | Ground Reference | Primary analog/digital ground return - Requires low-impedance connection to solid ground plane beneath package. |
| 6 (VDD) | Power Input | 2.2–3.6 V supply - Must be decoupled with 0.1 µF ceramic capacitor placed <2 mm from pin. |
| 7 (Sleep) | Digital Control Input | Active-low enable - Driven low to enter 3 μA sleep; high to resume 400 μA active operation (0.5 ms response). |
| 9 (0g-Detect) | Digital Output | Open-drain logic-high when |X|, |Y|, |Z| < 0.4 g - Signals linear freefall to MCU interrupt without polling. |
| 10 (g-Select) | Digital Control Input | Logic level selects range: low = ±1.5g (800 mV/g), high = ±6g (206 mV/g); internal pull-down defaults to ±1.5g if left open. |
| 13 (Self Test) | Digital Input | Pulse-high initiates electrostatic self-test - Causes calibrated deflection (X/Y: ~0.05 g, Z: ~0.8 g) to verify sensor and ASIC functionality. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-Calibrated Offset & Sensitivity | Zero-g offset trimmed to ±0.5% of VDD and sensitivity matched across axes - Eliminates need for end-user calibration or external trim components. |
| Ratiometric Output Architecture | Output offset and sensitivity scale linearly with VDD - Enables direct connection to microcontroller ADC reference (VDD) for supply-noise rejection. |
| Integrated Low-Pass Filtering | On-chip switched-capacitor filter (400 Hz XY / 300 Hz Z) - Removes internal clock noise without external RC networks or layout-sensitive passive components. |
| Linear Freefall Detection | 0g-Detect asserts when all three axes simultaneously read near-zero acceleration - Provides hardware-level trigger for HDD head parking or anti-theft lock activation. |
| Robust Shock Tolerance | Withstands ±5000 g mechanical shock - Survives drop tests (1.8 m onto concrete) and board-level reflow without performance degradation. |
Applications
| Laptop Freefall Protection | HDD MP3 Player Drop Detection |
|---|---|
Use Scenario: Laptop detects sudden loss of gravity during accidental drop. IC Role / Device Role / Timing Role: MMA7361LCT monitors all three axes continuously in low-power sleep mode, triggering 0g-Detect within milliseconds. Use Value: Enables hard disk drive head retraction before impact, preventing data loss and mechanical damage. |
Use Scenario: Portable music player experiences abrupt vertical acceleration change during pocket or bag drop. IC Role / Device Role / Timing Role: MMA7361LCT's 0g-Detect output drives immediate shutdown of flash memory writes and spin-down of mechanical components. Use Value: Prevents file corruption and extends device lifespan under real-world handling conditions. |
| Smartphone Motion UI | Pedometer Step Counting |
Use Scenario: User rotates phone to switch between portrait/landscape display or scrolls text via tilt. IC Role / Device Role / Timing Role: MMA7361LCT provides continuous 3-axis analog outputs sampled by MCU ADC at ≥100 Hz for real-time orientation calculation. Use Value: Enables responsive, low-latency UI interaction with minimal CPU overhead and no external sensor fusion required. |
Use Scenario: Wearable device detects repetitive vertical acceleration peaks during walking or running. IC Role / Device Role / Timing Role: MMA7361LCT operates in ±1.5g mode with 400 Hz bandwidth to capture foot-strike dynamics while rejecting high-frequency noise. Use Value: Delivers accurate step counts with <5% error over varied terrain using only on-device firmware processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-axis low-g accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADXL335ACPZ-RL7 | Wider supply range (1.8–3.6 V), higher noise floor (300 μg/√Hz vs. 350 μg/√Hz), no 0g-Detect or Sleep Mode. | Lacks hardware freefall interrupt and ultra-low-power sleep - Requires MCU polling and higher average current. | Select when broader voltage compatibility is critical and system-level freefall logic can be implemented in firmware. |
| KXSC7-2050 | Lower current (2.5 μA sleep), digital I²C/SPI output, built-in FIFO, but no analog outputs or 0g-Detect pin. | Requires digital interface and host processor support - Not drop-in for analog-output legacy designs. | Select for new designs prioritizing lowest sleep power and digital integration, where replacing analog signal chain is feasible. |
Compared with ADXL335ACPZ-RL7 and KXSC7-2050, the MMA7361LCT uniquely combines analog ratiometric outputs, dedicated 0g-Detect hardware interrupt, and sub-10 μA sleep power in a single LGA-14 package-making it optimal for cost-sensitive, battery-powered systems requiring immediate freefall response without MCU intervention.
Availability
MMA7361LCT is available at Aetrix Electronics and suitable for laptop freefall protection, portable media player drop detection, and smartphone motion UI applications requiring stable component supply and long-term industrial availability.
Supply support for MMA7361LCT 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 leader in embedded processing and sensor solutions, specializing in automotive, industrial, and consumer ICs with emphasis on reliability and system-level integration.
The MMA7361LCT belongs to Freescale's Xtrinsic™ family of intelligent sensors, designed specifically for ultra-low-power motion awareness in portable consumer electronics-balancing sensitivity, power efficiency, and ease of integration.
FAQ
What is the operating voltage range for the MMA7361LCT?
The MMA7361LCT operates from 2.2 V to 3.6 V DC. Within this range, it maintains full specification compliance-including factory-calibrated offset, sensitivity, and bandwidth. Operation below 2.2 V or above 3.6 V may yield functional but uncalibrated output, and exceeding 3.6 V risks permanent damage per the absolute maximum rating.
How does the g-Select pin configure the MMA7361LCT's measurement range?
The g-Select pin (Pin 10) sets the MMA7361LCT's full-scale range: logic low selects ±1.5g (800 mV/g sensitivity), and logic high selects ±6g (206 mV/g). An internal pull-down ensures ±1.5g operation if the pin is left unconnected-enabling simple single-range designs without external biasing.
Can the MMA7361LCT detect freefall without microcontroller polling?
Yes-the MMA7361LCT's 0g-Detect pin (Pin 9) asserts a logic-high signal when all three axes simultaneously register acceleration magnitudes below ±0.4 g. This hardware interrupt eliminates the need for continuous ADC sampling, reducing MCU load and power consumption in freefall-critical applications like HDD protection.
What is the purpose of the Self Test pin on the MMA7361LCT?
The Self Test pin (Pin 13) initiates an electrostatic actuation sequence that deflects the MEMS sensing element-producing known output shifts (~0.05 g on X/Y, ~0.8 g on Z). This verifies both mechanical integrity and signal chain functionality before deployment or after field shock events, ensuring reliable operation in safety-critical motion systems.
Does the MMA7361LCT require external components for basic operation?
The MMA7361LCT requires only two external components for robust operation: a 0.1 µF ceramic capacitor between VDD and VSS (placed <2 mm from Pin 6), and 3.3 nF capacitors on each analog output (XOUT/YOUT/ZOUT) to suppress switched-capacitor filter clock noise. No resistors, op-amps, or trimming components are needed due to factory calibration.
MMA7361LCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 14-TFLGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Analog
- Axis:
- X, Y, Z
- Acceleration Range:
- ±1.5g, 6g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 800 (±1.5g) ~ 206 (±6g)
- Bandwidth:
- 400Hz (X,Y), 300Hz (Z)
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 2.2V ~ 3.6V
- Features:
- Selectable Scale, Sleep Mode
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-LGA (3x5)
MMA7361LCT FAQ
1.How can I place an order for MMA7361LCT through Aetrix?
Please submit a Request for Quotation (RFQ) for MMA7361LCT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MMA7361LCT reliable?
The price and inventory of MMA7361LCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMA7361LCT is usually 5 days.
3.What payment methods are accepted for MMA7361LCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMA7361LCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMA7361LCT?
MMA7361LCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMA7361LCT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MMA7361LCT?
For technical support, including MMA7361LCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMA7361LCT requirements.
6.How does Aetrix verify that MMA7361LCT is sourced from the original manufacturer or authorized distributors?
All MMA7361LCT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MMA7361LCT meets industry standards.
7.What is the process for return or replacement of MMA7361LCT?
All MMA7361LCT units undergo pre-shipment inspection (PSI). If there is an issue with MMA7361LCT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MMA7361LCT part is unused and in its original packaging.
Return procedure for MMA7361LCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMA7361LCT Tags
-
MXC4005XC
Memsic Inc.
-
MC3419
Memsic Inc.
-
MC3479
Memsic Inc.
-
MXC6655XA
Memsic Inc.
-
MC3630
Memsic Inc.
.jpg)
-
LIS2HH12TR
STMicroelectronics
-
KX122-1037
Kionix Inc.
-
LIS2DE12TR
STMicroelectronics
-
LIS2DH12TR
STMicroelectronics
-
MC3635
Memsic Inc.
-
LIS2DS12TR
STMicroelectronics
-
LIS3DHTR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
