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NXP Semiconductors MMA5206KW
- Part No.:
- MMA5206KW
- Manufacturer:
- NXP Semiconductors
- Category:
- Accelerometers
- Package:
- 16-QFN Exposed Pad
- Datasheet:
-
MMA5206KW.pdf
- Description:
- IC SENSOR ACCELEROMETER 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,362
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Product details
Overview
MMA5206KW from NXP Semiconductors (formerly Freescale) is an X-axis satellite accelerometer with PSI5 interface, ±60g full-scale range, AEC-Q100 Grade 1 qualification (−40°C to +125°C), and 16-pin QFN package. It delivers 10-bit digital output at 16 μs internal sample rate with interpolation to 1 μs resolution, designed for airbag crash detection in automotive safety systems.
For engineers reviewing the MMA5206KW datasheet, MMA5206KW pinout, MMA5206KW application, or MMA5206KW equivalent, this page provides verified technical context, PSI5 timing parameters, low-pass/high-pass filter configuration options, daisy-chain capability, and validated alternative accelerometers for automotive inertial sensing.
Technical Context
The MMA5206KW implements a ΣΔ ADC with SINC filtering, followed by programmable DSP-based low-pass filters (400 Hz, 3-pole or 4-pole) and a single-pole high-pass filter with fast startup. Its PSI5 Version 1.3-compliant interface supports 125 kBaud or 190.5 kBaud, 8- or 10-bit data length, and configurable error detection (even parity or 3-bit CRC).
Internally regulated supplies include VBUF (3.6–4.0 V), VREG (2.425–2.575 V), and VREGA (2.425–2.575 V), each requiring external decoupling capacitors. The device features OTP-programmable registers for range, time slot, baud rate, and filter settings, with dedicated pins for daisy-chain bus switching (BUS_SW) and PCM test output (PCM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Full-Scale Range | ±60g - calibrated sensitivity of 8 LSB/g at 100 Hz, enabling precise front/side crash acceleration measurement |
| PSI5 Interface | Version 1.3 compliant - supports daisy chain, programmable time slots (0.5 μs resolution), and dual baud rates (125/190.5 kBaud) |
| Filter Configuration | Selectable 400 Hz low-pass (3-pole or 4-pole) + single-pole high-pass - enables dynamic response tailoring for crash pulse discrimination |
| Output Resolution | 10-bit digital output - provides 960 LSB full-scale range with ±1 LSB offset after cancellation |
| Operating Temperature | AEC-Q100 Grade 1 (−40°C to +125°C) - qualified for under-hood and passenger compartment automotive deployment |
| Package | 16-pin QFN, 6 mm × 6 mm, case 2086-01 - surface-mount compatible with automotive PCB assembly standards |
| Supply Current | Quiescent: 4–8 mA; Modulation: IIDLE + 22–30 mA - enables low-power standby and active PSI5 communication modes |
Pinout & Package
Pb-free 16-pin QFN (6 mm × 6 mm, case 2086-01) with exposed die attach pad internally connected to VSS. Pin 17 (PAD) and corner pads are grounded per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | PSI5 Power & Data Line Supply | Connects to PSI5 bus via series resistor; powers device and carries modulated current signal (IDATA) |
| IDATA | PSI5 Response Current Output | Modulates current on VCC line for PSI5 communication; requires external pull-up resistor |
| VBUF | Buffer Regulator Input | Supplies isolated analog/digital rails (VREG/VREGA); improves EMC immunity and supply dropout resilience |
| BUS_SW | Daisy Chain Switch Gate Drive | Drives external N-channel FET to enable VSS_OUT connection in multi-sensor daisy chain configurations |
| VREG / VREGA | Digital / Analog Internal Supply | Require 1 μF decoupling to VSS/VSSA; generate stable 2.5 V rails independent of noisy VCC |
Key Features
| Feature | Design Value |
|---|---|
| PSI5 Daisy Chain Support | Enables up to 3 sensors on one bus using BUS_SW-driven external FET and programmable time slots |
| Programmable Filter Architecture | Configurable 400 Hz LPF (3- or 4-pole) + fast-start HPF allows real-time adaptation to crash pulse profiles |
| On-Chip Offset Cancellation | Two-stage digital compensation reduces initial offset to ±1 LSB (10-bit mode), improving zero-g accuracy |
| Self-Test Capability | Active electrostatic self-test generates known acceleration (120 LSB @ ±60g range) for functional verification |
| OTP User Configuration | Factory- and user-programmable registers store range, baud rate, data size, CRC type, and time slot assignments |
Applications
| Airbag Front Crash Detection | Airbag Side Impact Detection |
|---|---|
Use Scenario: Mounted in vehicle dashboard or pillar to detect rapid forward deceleration during frontal collision. IC Role / Device Role / Timing Role: X-axis accelerometer providing 16 μs sampled acceleration data over PSI5 bus for ECU-triggered airbag deployment. Use Value: ±60g range and 400 Hz LPF reject road noise while preserving crash pulse fidelity; AEC-Q100 Grade 1 ensures reliability in harsh environments. | Use Scenario: Installed in door panel or B-pillar to sense lateral acceleration during side-impact collisions. IC Role / Device Role / Timing Role: Satellite X-axis sensor in daisy-chained PSI5 network delivering synchronized 10-bit data to central airbag controller. Use Value: BUS_SW pin enables compact multi-sensor topology; programmable time slots prevent bus contention in multi-node systems. |
| Seat Belt Pretensioner Activation | Occupant Classification System |
Use Scenario: Integrated into seat structure to detect pre-crash braking or sudden deceleration triggering pretensioner retraction. IC Role / Device Role / Timing Role: Low-latency inertial sensor feeding real-time acceleration data to restraint control module via PSI5 interface. Use Value: 1 μs interpolated timing resolution supports precise event timing; ±60g range matches typical pretensioner activation thresholds. | Use Scenario: Used alongside pressure sensors to distinguish adult vs. child occupancy based on dynamic seat loading during vehicle maneuvers. IC Role / Device Role / Timing Role: High-stability X-axis accelerometer monitoring seat acceleration transients during turns, braking, and bumps. Use Value: On-chip offset cancellation (±1 LSB residual) ensures consistent baseline across temperature; 0.3 Hz HPF removes quasi-static posture effects. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar inertial sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics AIS2DWL | I²C/SPI interface only; no PSI5 support; ±2g to ±16g range; 12-bit output; operates down to −40°C but not AEC-Q100 qualified | Requires redesign of communication interface and host firmware; unsuitable for OEM automotive PSI5 bus architectures | Select when non-automotive industrial motion sensing is needed with standard digital interfaces and lower g-range requirements |
| NXP MMA5224KW | Same family, same package and pinout; ±240g full-scale range; higher sensitivity tolerance (±7% vs. ±5% for MMA5206KW); identical PSI5 timing and register map | Direct hardware replacement if system requires extended range for rollover or heavy-vehicle crash detection | Choose for higher-g applications where mechanical mounting or crash profile demands >±60g headroom |
Compared with MMA5206KW, the AIS2DWL lacks PSI5 compliance and automotive qualification, limiting use to non-OEM designs, while the MMA5224KW offers identical form-factor and interface compatibility but extends full-scale range-making it a drop-in option only when higher acceleration tolerance is required.
Availability
MMA5206KW is available at Aetrix Electronics and suitable for airbag control units, seat belt pretensioner modules, and occupant classification systems requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant inertial sensing.
Supply support for MMA5206KW 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The MMA5206KW belongs to NXP's Xtrinsic inertial sensor product line, engineered specifically for PSI5-based automotive safety systems including airbag and restraint control, with emphasis on EMC robustness, functional safety readiness, and daisy-chain scalability.
FAQ
What is the full-scale range and sensitivity of the MMA5206KW?
The MMA5206KW has a ±60g full-scale range with a nominal sensitivity of 8 LSB/g at 100 Hz in 10-bit mode. Total sensitivity error is ±5% over temperature (−40°C to +125°C) and supply voltage range. This calibration enables accurate crash pulse detection in automotive airbag systems where precise g-level thresholds determine deployment timing.
Does the MMA5206KW support daisy-chain configuration?
Yes, the MMA5206KW supports PSI5 daisy chaining via the BUS_SW pin, which drives an external N-channel MOSFET to connect VSS to VSS_OUT. When enabled, multiple MMA5206KW devices share one PSI5 bus using programmable time slots (0.5 μs resolution). Each device must be assigned a unique time slot address via OTP programming before deployment.
What are the power supply requirements for the MMA5206KW?
The MMA5206KW requires three regulated supplies: VCC (4.2–17.0 V, PSI5 bus line), VBUF (3.6–4.0 V, buffered input), and separate VREG (2.425–2.575 V) and VREGA (2.425–2.575 V) outputs. External 1 μF capacitors are mandatory on VREG/VREGA, and a 2.2 nF capacitor is required on VCC. Quiescent current is 4–8 mA; modulation current adds 22–30 mA during PSI5 transmission.
How is offset cancellation implemented in the MMA5206KW?
The MMA5206KW performs two-stage digital offset cancellation during initialization. Stage 1 uses a 0.3 Hz HPF and Stage 2 uses a 0.1 Hz HPF, reducing residual offset to ±1 LSB (10-bit mode) over temperature. The process is triggered automatically on power-up or via PSI5 command and is stored in OTP-configurable registers (DEVCFG5/DEVCFG6) for repeatable behavior across power cycles.
Is the MMA5206KW AEC-Q100 qualified, and what grade does it meet?
Yes, the MMA5206KW is qualified to AEC-Q100 Revision G, Grade 1, with operating temperature range −40°C to +125°C. This qualification covers stress tests including HTOL, TC, UHAST, and ESD (HBM ±4 kV, CDM ±1.5 kV), confirming suitability for safety-critical automotive applications such as front and side airbag crash detection systems.
MMA5206KW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 16-QFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- -
- Axis:
- X
- Acceleration Range:
- ±60g
- Sensitivity (LSB/g):
- -
- Sensitivity (mV/g):
- -
- Bandwidth:
- 400Hz
- Output Type:
- -
- Voltage - Supply:
- 4.2V ~ 17V
- Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (6x6)
MMA5206KW FAQ
1.How can I place an order for MMA5206KW through Aetrix?
Please submit a Request for Quotation (RFQ) for MMA5206KW 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 MMA5206KW reliable?
The price and inventory of MMA5206KW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMA5206KW is usually 5 days.
3.What payment methods are accepted for MMA5206KW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMA5206KW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMA5206KW?
MMA5206KW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMA5206KW 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 MMA5206KW?
For technical support, including MMA5206KW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMA5206KW requirements.
6.How does Aetrix verify that MMA5206KW is sourced from the original manufacturer or authorized distributors?
All MMA5206KW 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 MMA5206KW meets industry standards.
7.What is the process for return or replacement of MMA5206KW?
All MMA5206KW units undergo pre-shipment inspection (PSI). If there is an issue with MMA5206KW, 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 MMA5206KW part is unused and in its original packaging.
Return procedure for MMA5206KW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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