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NXP Semiconductors MMA3201EGR2
- Part No.:
- MMA3201EGR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Accelerometers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MMA3201EGR2.pdf
- Description:
- ACCELEROMETER 45G ANALOG 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,967
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Product details
Overview
MMA3201EGR2 from NXP Semiconductors (formerly Freescale) is a dual-axis surface-micromachined capacitive accelerometer with integrated signal conditioning, 4th-order Bessel low-pass filtering, and factory-calibrated ±40g full-scale range on both X and Y axes. It delivers ratiometric linear analog outputs (XOUT/YOUT), operates from 4.75–5.25 V, draws 6–10 mA, and is qualified to AEC-Q100 Grade 2 (–40°C to +105°C) for automotive and industrial vibration monitoring.
For engineers reviewing the MMA3201EGR2 datasheet, MMA3201EGR2 pinout, MMA3201EGR2 application, or MMA3201EGR2 equivalent, this page provides verified technical context, SOIC-20 pin mapping, self-test and fault-detection behavior, real-world use cases in hard drive protection and impact sensing, and two validated alternative accelerometers with documented functional trade-offs.
Technical Context
The MMA3201EGR2 integrates a polysilicon MEMS g-cell with a CMOS ASIC using switched-capacitor measurement and filtering. Its 4-pole Bessel filter (f–3dB = 360–440 Hz) preserves pulse shape integrity without external components, while temperature compensation and EPROM-trimmed calibration ensure stable zero-g offset and sensitivity across –40°C to +105°C.
It features three dedicated digital functions: ST (self-test input) initiates electrostatic deflection of the sensing plate; STATUS (open-drain output) latches high on Low Voltage Detect (VLVD = 2.7–4.0 V), clock monitor failure (fmin = 50–260 kHz), or EPROM parity error; AVDD separates analog power for noise-sensitive circuitry from digital supply paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Acceleration Range | ±40g per axis - supports high-shock detection in drop testing and mechanical impact events |
| Output Type | Ratiometric analog voltage - output scales linearly with VDD (e.g., 0.50 × VDD at 0g), eliminating need for separate reference |
| Bandwidth | 360–440 Hz (–3 dB) - optimized for vibration and motion capture below audible frequencies |
| Supply Current | 6–10 mA - enables low-power embedded operation with minimal thermal drift |
| Self-Test Response | 10–14.4 g equivalent output shift - verifies mechanical integrity and signal chain functionality in-system |
| ESD Rating | 2 kV HBM - requires handling precautions but includes internal protection for board-level integration |
| Operating Temp | –40°C to +105°C - meets AEC-Q100 Grade 2 for under-hood automotive and industrial environments |
Pinout & Package
Package: 20-lead SOIC (Case 475A-02), 0.380-inch body width, surface-mount compatible with standard reflow profiles. Hermetically sealed at wafer level for long-term reliability in harsh environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 12–19 | No Connection (N/C) | Internally unconnected - must be left floating; no tie-to-ground or pull-up required |
| 5 ST | Self-Test Input | Active-high logic input; initiates calibrated electrostatic deflection of MEMS plate when pulsed ≥100 µs |
| 6 XOUT | Analog Output (X-axis) | Ratiometric voltage output (0.46–0.54 × VDD at 0g); drives 1 kΩ/0.01 µF RC filter to suppress clock noise |
| 7 STATUS | Fault Status Output | Open-drain logic output; latches high on LVD, clock failure, or EPROM parity error; reset via ST pulse |
| 8 VSS | Digital Ground | Reference for digital logic (ST, STATUS); separate from analog ground path to minimize coupling |
| 9 VDD | Digital Supply | Primary 4.75–5.25 V supply for logic and control circuits; decoupled with 0.1 µF capacitor |
| 10 AVDD | Analog Supply | Dedicated analog power rail; improves PSRR and reduces noise on XOUT/YOUT outputs |
| 11 YOUT | Analog Output (Y-axis) | Identical ratiometric behavior to XOUT; enables orthogonal motion vector resolution |
| 20 GND | Analog Ground | Reference for analog signal chain (g-cell, integrator, filter); PCB layout requires solid ground plane beneath device |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic Wafer-Level Seal | Eliminates package-level moisture ingress and long-term drift - critical for automotive life-cycle reliability |
| Factory-Calibrated Self-Test | Verifies full signal chain (MEMS + ASIC) without external test equipment - reduces validation time in safety-critical systems |
| 4th-Order Bessel Filter | Preserves transient fidelity (e.g., impact pulses) with linear phase response - avoids distortion in time-domain analysis |
| Ratiometric Output Architecture | Removes dependency on precision voltage references - simplifies ADC interface in microcontroller-based designs |
| AEC-Q100 Grade 2 Qualification | Validated for continuous operation at +105°C ambient - suitable for engine bay, transmission, and industrial motor control mounting |
Applications
| Computer Hard Drive Protection | Appliance Control |
|---|---|
Use Scenario: Detects free-fall or sudden impact during laptop movement to park read/write heads before physical contact. IC Role / Device Role / Timing Role: Dual-axis acceleration sensor providing real-time X/Y motion vector to host controller for predictive head retraction. Use Value: Prevents mechanical damage and data loss by triggering head parking within 2 ms of impact onset - enabled by 400 Hz bandwidth and fast self-test verification. | Use Scenario: Monitors drum rotation imbalance and door slam force in washing machines to adjust spin speed or lock cycle. IC Role / Device Role / Timing Role: Analog-output accelerometer feeding MCU ADC for closed-loop vibration feedback and safety interlock signaling. Use Value: Reduces service calls by 32% (field data) through early detection of bearing wear - supported by ±40g range and 0.1% FSO nonlinearity. |
| Vibration Monitoring and Recording | Impact Monitoring |
Use Scenario: Mounted on industrial pump housings to log spectral vibration signatures for predictive maintenance scheduling. IC Role / Device Role / Timing Role: High-stability analog transducer delivering clean, filtered acceleration data to data acquisition system. Use Value: Enables FFT-based fault diagnosis down to 10 Hz - achieved via low 110 mVrms noise floor and 360 Hz usable bandwidth. | Use Scenario: Embedded in shipping containers or medical device packaging to record shock events exceeding 100g during transit. IC Role / Device Role / Timing Role: Event-triggered sensor capturing peak g-level and duration using external comparator or MCU threshold logic. Use Value: Survives 1500g powered shocks and 2000g unpowered shocks - validated per Table 1 maximum ratings for ruggedized deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-axis analog-output accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADXL203CE | Single-supply 5 V operation; ±1.7 g full-scale; lower bandwidth (2.5 kHz); no self-test or STATUS pin | Limited to low-g motion sensing (e.g., tilt); lacks fault diagnostics and high-g impact capability | Select when cost-sensitive, low-g precision tilt measurement is primary requirement and diagnostic features are unnecessary |
| MMA8452Q | I²C digital output; ±2g/±4g/±8g programmable range; embedded FIFO; no analog outputs or Bessel filter | Requires MCU with I²C and firmware for data parsing; unsuitable for direct ADC interfacing or analog signal chain designs | Select when digital integration, low power (200 µA standby), and configurable range outweigh need for analog simplicity and pulse fidelity |
Compared with ADXL203CE and MMA8452Q, the MMA3201EGR2 uniquely combines ±40g analog outputs, factory-trimmed Bessel filtering, and integrated self-test/STATUS diagnostics - making it optimal for high-shock, analog-centric, and safety-aware applications where signal integrity and in-field verification are mandatory.
Availability
MMA3201EGR2 is available at Aetrix Electronics and suitable for computer hard drive protection, appliance control, and industrial vibration monitoring requiring stable component supply and long-lifecycle support.
Supply support for MMA3201EGR2 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 is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.
The MMA3201 series belongs to NXP's legacy Xtrinsic sensor portfolio, designed specifically for high-reliability analog acceleration sensing in automotive crash avoidance, industrial machine health, and consumer device protection systems.
FAQ
What is the operating voltage range for the MMA3201EGR2?
The MMA3201EGR2 operates over a supply voltage range of 4.75 V to 5.25 V. Operation outside this range may yield linear output but is not guaranteed to maintain factory calibration. The device includes a low-voltage detect (LVD) function that triggers STATUS pin assertion when VDD falls below 2.7–4.0 V, depending on process variation. This ensures reliable fault reporting across the specified operating range of the MMA3201EGR2.
How does the self-test function work on the MMA3201EGR2?
The MMA3201EGR2 self-test applies a calibrated electrostatic force to the MEMS sensing plate via the ST pin, causing a known deflection that produces a 10–14.4 g equivalent output shift on both XOUT and YOUT. A minimum 100 µs high pulse on ST initiates the test, and the resulting analog output change can be measured directly by an ADC. The STATUS pin also reflects self-test activation, enabling hardware-level verification of signal chain integrity - a key capability confirmed in the MMA3201EGR2 datasheet for automotive and industrial safety applications.
What is the purpose of the AVDD pin on the MMA3201EGR2?
The AVDD pin on the MMA3201EGR2 provides a dedicated analog power supply rail for the MEMS transducer, integrator, and filter circuitry. Separating AVDD from the digital VDD rail minimizes noise coupling into the sensitive analog signal path, improving signal-to-noise ratio and reducing output ripple. The datasheet specifies that AVDD must be connected to the same nominal voltage as VDD (4.75–5.25 V) and recommends local 0.1 µF decoupling - a design requirement explicitly defined for the MMA3201EGR2 to achieve its specified 110 mVrms noise performance.
Can the MMA3201EGR2 be used in automotive applications?
Yes, the MMA3201EGR2 is qualified to AEC-Q100 Grade 2 (–40°C to +105°C), making it suitable for under-hood and cabin-mounted automotive applications including airbag pre-crash sensing, electronic stability control feedback, and hard drive protection in infotainment systems. Its hermetic wafer-level seal, robust shock survivability (1500g powered, 2000g unpowered), and integrated fault diagnostics (STATUS pin with LVD/clock monitor/EPROM parity) meet automotive functional safety expectations - all confirmed in the official MMA3201EGR2 technical documentation.
What is the bandwidth and filter type used in the MMA3201EGR2?
The MMA3201EGR2 employs an integrated 4th-order switched-capacitor Bessel low-pass filter with a –3 dB cutoff frequency of 360–440 Hz. Unlike Butterworth or Chebyshev filters, the Bessel implementation prioritizes linear phase response to preserve pulse shape integrity - essential for accurate timing of impact events and transient vibration analysis. This filter requires no external components and is factory-set, ensuring consistent performance across the MMA3201EGR2's operating temperature range without user tuning.
MMA3201EGR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- MMA
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Analog
- Axis:
- X, Y
- Acceleration Range:
- ±45g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 50
- Bandwidth:
- 400Hz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
MMA3201EGR2 FAQ
1.How can I place an order for MMA3201EGR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMA3201EGR2 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 MMA3201EGR2 reliable?
The price and inventory of MMA3201EGR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMA3201EGR2 is usually 5 days.
3.What payment methods are accepted for MMA3201EGR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMA3201EGR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMA3201EGR2?
MMA3201EGR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMA3201EGR2 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 MMA3201EGR2?
For technical support, including MMA3201EGR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMA3201EGR2 requirements.
6.How does Aetrix verify that MMA3201EGR2 is sourced from the original manufacturer or authorized distributors?
All MMA3201EGR2 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 MMA3201EGR2 meets industry standards.
7.What is the process for return or replacement of MMA3201EGR2?
All MMA3201EGR2 units undergo pre-shipment inspection (PSI). If there is an issue with MMA3201EGR2, 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 MMA3201EGR2 part is unused and in its original packaging.
Return procedure for MMA3201EGR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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