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NXP Semiconductors FXLN8361QR1
- Part No.:
- FXLN8361QR1
- Manufacturer:
- NXP Semiconductors
- Category:
- Accelerometers
- Package:
- 12-VQFN Exposed Pad
- Datasheet:
-
FXLN8361QR1.pdf
- Description:
- ACCELEROMETER 2-8G ANALOG 12QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,208
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Product details
Overview
FXLN8361QR1 from NXP (formerly Freescale) is a 3-axis analog-output accelerometer with ±2 g / ±8 g full-scale range selection, low-power operation (180 μA typical), and low-bandwidth configuration (1.1 kHz XY / 600 Hz Z). It delivers internally compensated analog outputs (XOUT/YOUT/ZOUT) with fixed 0.75 V zero-g offset and operates across –40 °C to +105 °C for industrial tilt and vibration sensing in white goods.
For engineers reviewing the FXLN8361QR1 datasheet, FXLN8361QR1 pinout, FXLN8361QR1 application, or FXLN8361QR1 equivalent, this page provides verified technical context, validated pin functions, real-world use cases in motion-sensitive appliances, and confirmed alternative parts with documented functional trade-offs.
Technical Context
The FXLN8361QR1 integrates a MEMS acceleration sensor with a CMOS ASIC for signal conditioning, featuring independent bandwidth tuning via external capacitors and digital control of full-scale range via the g-Select pin. Its analog outputs are buffered with 10 kΩ typical output impedance and calibrated zero-g offset stability over temperature (±1.2 mg/°C).
It supports self-test (ST pin) and shutdown (EN pin) modes, with turn-on time of 660 μs and g-Select transition delay of 340 μs. The device uses internal voltage regulation (BYP pin at 1.5 V ±0.05 V) and requires no external reference, enabling direct ADC interfacing without additional signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.71–3.6 V - compatible with single Li-ion or 3.3 V system rails without level-shifting. |
| Full-Scale Range | ±2 g or ±8 g - selected dynamically via g-Select logic level; enables one BOM for dual sensitivity requirements. |
| Bandwidth | 1.1 kHz (X/Y), 600 Hz (Z) - optimized for low-frequency motion detection (e.g., appliance tilt, slow vibration) with reduced noise. |
| Output Offset | 0.75 V ±45 mV - fixed zero-g voltage independent of VDD, simplifying ratiometric ADC design and calibration. |
| Current Consumption | 180 μA active, 30 nA shutdown - enables battery-powered operation for >1 year in periodic wake-up monitoring systems. |
| Noise Density | 130 µg/√Hz (X/Y), 200 µg/√Hz (Z) - supports resolution better than 0.01 g RMS in 10 Hz bandwidth for precision inclinometry. |
| Operating Temp | –40 °C to +105 °C - qualified for under-hood automotive accessories and industrial motor control enclosures. |
Pinout & Package
FXLN8361QR1 is housed in a 3 mm × 3 mm × 1 mm, 12-pin QFN package (Case 2300-01, 0.65 mm pitch) with exposed thermal pad (DNC - do not solder). Pin 1 is marked by dot; top-side marking includes "P3XX" and lot/date codes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BYP | Internal regulator output capacitor node | Stabilizes internal 1.5 V reference; requires 100 nF ceramic capacitor to GND for noise immunity. |
| VDD | Primary power supply input | Accepts 1.71–3.6 V; must ramp before EN assertion to avoid startup failure. |
| ST | Self-test activation input | Logic high injects electrostatic force simulating ~35 mg (X/Y) or 300 mg (Z) for end-of-line test without mechanical stimulus. |
| EN | Power enable control | Logic high enables full operation; logic low reduces current to 30 nA - critical for ultra-low-power duty-cycled systems. |
| g-Select | Full-scale range selection | Logic high = ±2 g mode; logic low = ±8 g mode - configures sensitivity (229 mV/g vs. 57.25 mV/g) and dynamic range. |
| GND (Pins 6 & 7) | Dual ground connections | Separate low-impedance return paths reduce crosstalk between analog and digital sections. |
| ZOUT | Z-axis analog output | Buffered voltage output (0.75 V ±0.045 V at 0 g); bandwidth set by external capacitor (9.1 nF for low BW). |
| YOUT | Y-axis analog output | Same output structure as ZOUT; shares 1.1 kHz low-bandwidth setting with XOUT. |
| XOUT | X-axis analog output | Fixed 0.75 V zero-g point; monotonic response across full scale with <±5% sensitivity error. |
| NC (Pins 11 & 12) | No-connect terminals | May be left floating or tied to GND; no internal connection - avoids unintended parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Low-bandwidth mode | 1.1 kHz (X/Y), 600 Hz (Z) - reduces high-frequency noise and power consumption while preserving motion detection fidelity for white goods. |
| Dual full-scale range | ±2 g / ±8 g selectable via single logic pin - eliminates need for separate SKUs in applications requiring both coarse and fine motion detection. |
| Fixed zero-g offset | 0.75 V ±45 mV across VDD and temperature - enables single-supply ratiometric ADC designs without software offset compensation. |
| Robust shock survivability | 10,000 g - withstands assembly drop tests and operational impacts in robotics and industrial equipment mounting. |
| High-temperature operation | –40 °C to +105 °C - certified for placement near motors, compressors, or power electronics in home appliances. |
Applications
| Tamper Detection | White Goods Tilt Sensing |
|---|---|
Use Scenario: Monitoring unauthorized physical access to secure enclosures (e.g., utility meters, kiosks, medical devices). IC Role / Device Role / Timing Role: Accelerometer detecting sudden displacement or impact events exceeding ±2 g threshold. Use Value: Enables immediate tamper alert using ±2 g mode with 130 µg/√Hz noise floor - detects sub-100 mg disturbances while rejecting ambient vibration. |
Use Scenario: Detecting door open/closed state and drum imbalance in washing machines and dryers. IC Role / Device Role / Timing Role: Analog-output sensor feeding microcontroller ADC to compute tilt angle and rotational asymmetry. Use Value: Fixed 0.75 V zero-g offset and ±2 g range allow direct 12-bit ADC mapping without calibration; 105 °C rating permits placement near motor housing. |
| Robotics Motion Feedback | Inclinometer for Structural Monitoring |
Use Scenario: Real-time orientation feedback in collaborative robot end-effectors and mobile platforms. IC Role / Device Role / Timing Role: Low-latency analog interface providing continuous X/Y/Z acceleration for PID loop correction. Use Value: 660 μs turn-on time and 340 μs g-Select delay support rapid reconfiguration during mode transitions (e.g., lift vs. transport). |
Use Scenario: Long-term tilt measurement in bridges, wind turbines, and building foundations. IC Role / Device Role / Timing Role: High-stability analog sensor delivering drift-compensated DC-coupled output for angular position calculation. Use Value: Zero-g offset change ≤±1.2 mg/°C and ±5% sensitivity error ensure <0.1° angular accuracy over industrial temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog-output 3-axis accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMA8451Q | Digital I²C/SPI output; 14-bit resolution; higher current (150 μA active); no analog outputs. | Requires MCU with I²C peripheral; lacks direct analog interface for simple ADC-based systems. | Choose MMA8451Q when digital communication, embedded FIFO, or configurable interrupts are needed - not for direct analog signal chain integration. |
| ADXL335 | Fixed ±3 g range; no g-Select; higher noise density (300 µg/√Hz); wider supply (1.8–3.6 V). | Lacks programmable range and low-bandwidth optimization; less suitable for dual-sensitivity white goods BOM consolidation. | Choose ADXL335 only if ±3 g range suffices and g-Select flexibility is unnecessary - FXLN8361QR1 offers superior range adaptability and lower noise. |
Compared with MMA8451Q and ADXL335, FXLN8361QR1 uniquely combines analog output, dual-range selection, and low-bandwidth filtering in a single 3×3 mm package - making it optimal for cost-sensitive, analog-centric motion sensing where pin-compatible digital alternatives would require redesign.
Availability
FXLN8361QR1 is available at Aetrix Electronics and suitable for white goods tilt sensing, industrial tamper detection, and robotics motion feedback requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.
Supply support for FXLN8361QR1 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 continues to support the Xtrinsic sensor portfolio, focusing on high-reliability analog and mixed-signal solutions for industrial and automotive markets.
The FXLN83xxQ series was designed specifically for low-power, analog-output motion sensing in space-constrained, thermally demanding environments - emphasizing factory-calibrated stability, shock resilience, and seamless integration into existing ADC-based systems.
FAQ
What is the full-scale range configuration method for FXLN8361QR1?
The FXLN8361QR1 supports ±2 g and ±8 g full-scale ranges selected via the g-Select pin: logic high sets ±2 g (229 mV/g sensitivity), logic low sets ±8 g (57.25 mV/g). This is implemented in hardware with no register programming required, enabling runtime switching without firmware overhead. The FXLN8361QR1 datasheet confirms this behavior is exclusive to FXLN8361QR1 and FXLN8371QR1 variants.
Does FXLN8361QR1 require external components for basic operation?
Yes - FXLN8361QR1 requires three external capacitors: a 100 nF ceramic capacitor on BYP to GND for internal regulator stability, and 9.1 nF capacitors on XOUT/YOUT/ZOUT to set low-bandwidth response (1.1 kHz XY / 600 Hz Z). Decoupling capacitors (0.1 μF on VDD) are also mandatory per the FXLN8361QR1 layout guidelines to suppress supply noise.
How does the self-test function work on FXLN8361QR1?
The FXLN8361QR1 self-test applies an electrostatic actuation force to the MEMS sensor when ST pin is driven high, producing a known output shift: ~35 mg on X/Y axes and ~300 mg on Z axis. This verifies sensor integrity and signal path functionality without mechanical stimulation, supporting automated production testing. The FXLN8361QR1 datasheet specifies ST is a logic input with VIH ≥ 0.75×VDD.
What is the maximum operating temperature for FXLN8361QR1?
The FXLN8361QR1 is rated for continuous operation from –40 °C to +105 °C, validated per Freescale's qualification standards. This extended range allows placement near heat sources such as motors or power supplies in washing machines, HVAC systems, and industrial controllers - a key differentiator versus consumer-grade accelerometers limited to 85 °C.
Is FXLN8361QR1 pin-compatible with FXLN8371QR1?
Yes - FXLN8361QR1 and FXLN8371QR1 share identical 12-pin QFN-12 (3×3 mm) packaging, pinout, and footprint (Case 2300-01). The only functional difference is factory-programmed bandwidth: FXLN8361QR1 uses low-bandwidth mode (1.1 kHz XY), while FXLN8371QR1 uses high-bandwidth mode (2.7 kHz XY). Both support identical ±2/±8 g range selection and operate across the same voltage and temperature ranges.
FXLN8361QR1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- Xtrinsic
- Package/Case:
- 12-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Analog
- Axis:
- X, Y, Z
- Acceleration Range:
- ±2g, 8g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 229 (±2g) ~ 57.25 (±8g)
- Bandwidth:
- 1.1kHz (X,Y), 600Hz (Z)
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 1.71V ~ 3.6V
- Features:
- Selectable Scale
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-QFN (3x3)
FXLN8361QR1 FAQ
1.How can I place an order for FXLN8361QR1 through Aetrix?
Please submit a Request for Quotation (RFQ) for FXLN8361QR1 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 FXLN8361QR1 reliable?
The price and inventory of FXLN8361QR1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FXLN8361QR1 is usually 5 days.
3.What payment methods are accepted for FXLN8361QR1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FXLN8361QR1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FXLN8361QR1?
FXLN8361QR1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FXLN8361QR1 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 FXLN8361QR1?
For technical support, including FXLN8361QR1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FXLN8361QR1 requirements.
6.How does Aetrix verify that FXLN8361QR1 is sourced from the original manufacturer or authorized distributors?
All FXLN8361QR1 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 FXLN8361QR1 meets industry standards.
7.What is the process for return or replacement of FXLN8361QR1?
All FXLN8361QR1 units undergo pre-shipment inspection (PSI). If there is an issue with FXLN8361QR1, 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 FXLN8361QR1 part is unused and in its original packaging.
Return procedure for FXLN8361QR1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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