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NXP Semiconductors MMA3202KEGR2
- Part No.:
- MMA3202KEGR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Accelerometers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MMA3202KEGR2.pdf
- Description:
- ACCEL 112.5G/56.3G ANALOG 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,715
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Product details
Overview
MMA3202KEGR2 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 ±100g X-axis / ±50g Y-axis full-scale range. 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 +125°C) for automotive and industrial vibration monitoring.
For engineers reviewing the MMA3202KEGR2 datasheet, MMA3202KEGR2 pinout, MMA3202KEGR2 application, or MMA3202KEGR2 equivalent, key selection criteria include its dual-axis sensitivity asymmetry, self-test verification capability, status fault latching, SOIC-20 package compatibility, and absence of external filter components due to on-chip switched-capacitor architecture.
Technical Context
The MMA3202KEGR2 implements a micromachined polysilicon g-cell transducer hermetically sealed at wafer level, paired with a CMOS ASIC that performs capacitive sensing via switched-capacitor techniques. Its 4-pole Bessel filter ensures linear phase response (360–440 Hz –3 dB bandwidth) to preserve pulse shape integrity without external RC networks.
It features calibrated self-test actuation via electrostatic force on a dedicated test plate, zero-g offset and sensitivity trimmed in EPROM, and fault detection for low-voltage (2.7–4.0 V trip), clock frequency deviation (50–260 kHz), and EPROM parity errors - all reported through the open-drain STATUS pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| X-axis range | ±100 g - supports high-shock impact detection without saturation |
| Y-axis range | ±50 g - optimized for lower-range motion sensing with higher resolution |
| Sensitivity (X) | 20 mV/g typical - enables direct interface to 12-bit ADCs with ~2.5 g LSB at 5 V supply |
| Sensitivity (Y) | 40 mV/g typical - doubles voltage per g for improved Y-axis SNR |
| Bandwidth | 360–440 Hz - captures mechanical vibration up to audio sub-band without aliasing |
| Supply current | 6–10 mA - compatible with low-power embedded systems using 5 V rails |
| Operating temp | –40°C to +125°C - meets AEC-Q100 Grade 2 for under-hood automotive use |
Pinout & Package
Package: 20-lead SOIC (Case 475A-02), Pb-free, tape-and-reel packaging (R2 suffix). Body dimensions: 12.8 mm × 7.5 mm × 2.35 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 5 ST | Digital input | Active-high self-test initiation; internal pull-down prevents false triggering |
| 6 XOUT | Analog output | Ratiometric voltage proportional to X-axis acceleration (0.46–0.54 × VDD at 0 g) |
| 7 STATUS | Open-drain fault indicator | Latches high on LVD, clock fail, or EPROM parity error; reset by ST pulse ≥100 µs |
| 8 VSS | Digital ground | Reference for logic inputs and digital core; separate from AVDD return path |
| 9 VDD | Digital supply | Primary 4.75–5.25 V power for control logic and EPROM; decoupled with 0.1 µF |
| 10 AVDD | Analog supply | Dedicated analog rail for sensor front-end; improves PSRR and noise immunity |
| 11 YOUT | Analog output | Ratiometric voltage proportional to Y-axis acceleration; independent scaling from XOUT |
| 20 GND | Analog ground | Return path for analog circuitry; recommended as PCB ground plane beneath device |
Key Features
| Feature | Design Value |
|---|---|
| Dual-axis asymmetric range | Enables simultaneous high-dynamic-range (X) and high-resolution (Y) sensing in one package |
| On-chip 4th-order Bessel filter | Eliminates need for external RC filters while preserving transient fidelity in impact detection |
| Factory-trimmed zero-g offset & sensitivity | Removes requirement for system-level calibration; supports drop-in integration into legacy designs |
| Hermetic wafer-level seal | Ensures long-term reliability in humid, dusty, or thermally cycling environments (e.g., engine bays) |
| Self-test with mechanical + electrical verification | Validates g-cell deflection and signal chain integrity before deployment or during periodic diagnostics |
Applications
| Vibration Monitoring System | Hard Disk Drive Protection |
|---|---|
Use Scenario: Continuous measurement of motor housing vibration in HVAC compressors to detect bearing wear. IC Role / Device Role / Timing Role: Dual-axis analog sensor providing real-time acceleration data to microcontroller ADC inputs. Use Value: ±100g X-axis range captures high-frequency shock events; 440 Hz bandwidth resolves harmonics up to 7th order. | Use Scenario: Free-fall detection in laptop computers to park read/write heads before impact. IC Role / Device Role / Timing Role: Low-latency inertial trigger feeding interrupt to system controller upon sudden vertical acceleration. Use Value: Self-test confirms readiness at boot; STATUS pin provides fault visibility without polling. |
| Appliance Control Interface | Automotive Airbag Diagnostic Module |
Use Scenario: Tilt and motion sensing in smart washing machines to adjust drum rotation based on load distribution. IC Role / Device Role / Timing Role: Static and dynamic acceleration monitor delivering ratiometric analog outputs to MCU's internal ADC. Use Value: Ratiometric output eliminates supply drift errors; ±50g Y-axis provides precision for tilt angle calculation. | Use Scenario: Periodic functional verification of airbag sensor subsystem integrity over vehicle lifetime. IC Role / Device Role / Timing Role: Calibrated self-test and fault-latched STATUS output used for ISO 26262 ASIL-B diagnostic coverage. Use Value: EPROM parity check and clock monitor ensure sensor health reporting meets automotive safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-axis analog accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADXL203CE | Single-supply 5 V operation; ±1.7 g range; no self-test; 0.5–500 Hz bandwidth | Targeted at low-g precision inclinometry, not high-shock impact monitoring | Select ADXL203CE only when ±100g range and self-test are unnecessary and cost is primary constraint |
| MMA8452Q | I²C digital output; ±2/4/8 g selectable ranges; embedded FIFO; 12-bit resolution | Requires host processor with I²C interface; lacks analog immediacy and self-test voltage verification | Choose MMA8452Q for systems needing configurable ranges, low-power wake-on-motion, or digital bus integration |
Compared with ADXL203CE and MMA8452Q, the MMA3202KEGR2 uniquely combines asymmetric dual-axis full-scale ranges, analog ratiometric outputs with integrated Bessel filtering, and hardware-verified self-test - making it optimal for deterministic, high-reliability analog-sensing applications where timing-critical fault visibility is required.
Availability
MMA3202KEGR2 is available at Aetrix Electronics and suitable for automotive crash diagnostics, industrial vibration monitoring, and consumer electronics impact protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MMA3202KEGR2 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 company formed from the spin-off of Philips' semiconductor division, now specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The MMA3202KEGR2 belongs to NXP's legacy Xtrinsic sensor portfolio, designed specifically for robust, analog-output inertial sensing in harsh-environment applications demanding AEC-Q100 qualification and field-proven reliability.
FAQ
What is the operating voltage range for the MMA3202KEGR2?
The MMA3202KEGR2 operates from 4.75 V to 5.25 V. Within this range, it functions as a fully calibrated linear accelerometer. Operation outside this window may yield linear output but without guaranteed calibration accuracy. The device includes a low-voltage detect (LVD) feature with a trip point between 2.7 V and 4.0 V, signaled via the STATUS pin. This ensures reliable operation in automotive and industrial 5 V systems where supply ripple or brownout conditions must be monitored.
How does the self-test function work on the MMA3202KEGR2?
The MMA3202KEGR2 self-test applies an electrostatic force to the micromachined center plate via a dedicated test electrode, causing controlled deflection equivalent to ~12 g acceleration. When ST pin is driven high, XOUT and YOUT shift predictably (ΔVOFF ≈ 9.6–14.4 g × sensitivity), verifying both mechanical g-cell integrity and analog signal chain functionality. The STATUS pin remains high during self-test, and faults like LVD or clock failure latch independently - allowing unambiguous pass/fail assessment without external instrumentation.
What is the purpose of separate VDD and AVDD pins on the MMA3202KEGR2?
The MMA3202KEGR2 uses separate VDD (digital supply) and AVDD (analog supply) pins to isolate noise-sensitive analog circuitry from digital switching transients. VDD powers the control logic, EPROM, and clock generator, while AVDD exclusively supplies the capacitive sensor front-end and output amplifiers. This separation improves PSRR and reduces coupling of digital noise into analog outputs - critical for maintaining 110 mVrms noise floor and accurate DC offset stability across temperature. Decoupling each rail with 0.1 µF ceramic capacitors is mandatory per layout guidelines.
Can the MMA3202KEGR2 be used in automotive under-hood applications?
Yes, the MMA3202KEGR2 is qualified to AEC-Q100 Grade 2 (–40°C to +125°C) and features wafer-level hermetic sealing, robust shock survivability (2000 g unpowered), and built-in fault detection - all essential for under-hood automotive use. Its 4.75–5.25 V operation matches standard automotive 5 V regulators, and the STATUS pin provides immediate visibility into LVD, clock failure, or memory corruption - supporting ISO 26262 diagnostic requirements. The SOIC-20 package also withstands reflow and thermal cycling per J-STD-020.
What is the significance of the "KEG" suffix in MMA3202KEGR2?
"KEG" denotes a Pb-free, RoHS-compliant version of the MMA3202 series in SOIC-20 packaging (Case 475A-02), manufactured at a Freescale facility certified for automotive-grade production. The "R2" suffix indicates tape-and-reel packaging (2000 units per reel), optimized for automated SMT assembly. Unlike the base "EG" variant, "KEG" guarantees lead-free terminations and complies with JEDEC J-STD-020 moisture sensitivity level 3 - ensuring reliability in high-volume manufacturing without post-assembly reflow concerns.
MMA3202KEGR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- MMA3202
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Analog
- Axis:
- X, Y
- Acceleration Range:
- ±112.5g (X), ±56.3g (Y)
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- 20 (X), 40 (Y)
- Bandwidth:
- 400Hz
- Output Type:
- Analog Voltage
- Voltage - Supply:
- 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
MMA3202KEGR2 FAQ
1.How can I place an order for MMA3202KEGR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMA3202KEGR2 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 MMA3202KEGR2 reliable?
The price and inventory of MMA3202KEGR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMA3202KEGR2 is usually 5 days.
3.What payment methods are accepted for MMA3202KEGR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMA3202KEGR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMA3202KEGR2?
MMA3202KEGR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMA3202KEGR2 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 MMA3202KEGR2?
For technical support, including MMA3202KEGR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMA3202KEGR2 requirements.
6.How does Aetrix verify that MMA3202KEGR2 is sourced from the original manufacturer or authorized distributors?
All MMA3202KEGR2 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 MMA3202KEGR2 meets industry standards.
7.What is the process for return or replacement of MMA3202KEGR2?
All MMA3202KEGR2 units undergo pre-shipment inspection (PSI). If there is an issue with MMA3202KEGR2, 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 MMA3202KEGR2 part is unused and in its original packaging.
Return procedure for MMA3202KEGR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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