My Inquiry
My Account
NXP Semiconductors MMA5106LCWR2
- Part No.:
- MMA5106LCWR2
- Manufacturer:
- NXP Semiconductors
- Category:
- Accelerometers
- Package:
- 16-QFN Exposed Pad
- Datasheet:
-
MMA5106LCWR2.pdf
- Description:
- ACCELEROMETER 60G PCM/SPI 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,111
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMA5106LCWR2 from NXP Semiconductors is a Z-axis PSI5-compatible inertial sensor designed for automotive airbag crash detection. It delivers ±60 g full-scale range, 400 Hz 3-pole/4-pole selectable low-pass filtering, 16 μs internal sample rate with 1 μs interpolation resolution, and operates across –40 °C to +125 °C per AEC-Q100 Grade 1.
For engineers reviewing the MMA5106LCWR2 datasheet, MMA5106LCWR2 pinout, MMA5106LCWR2 application, or MMA5106LCWR2 equivalent, this page provides verified technical context, PSI5 v1.3 interface timing, daisy-chain capability, offset cancellation performance, and validated alternative accelerometers for front/side impact sensing systems.
Technical Context
The MMA5106LCWR2 integrates an overdamped Z-axis g-cell with natural frequency of 7–8 kHz and damping ratio of 1.87–4.61, paired with a ΣΔ ADC and programmable DSP signal chain. Its PSI5 v1.3 interface supports 125 kBaud or 190.5 kBaud, 8- or 10-bit data length, even parity or 3-bit CRC error detection, and programmable time slots with 0.5 μs resolution.
Internal regulation includes independent VBUF (3.6–4.0 V), VREG (2.425–2.575 V), and VREGA (2.425–2.575 V) supplies, each requiring external decoupling capacitors. The device implements two-stage offset cancellation with configurable HPF cutoffs (0.04 Hz / 0.1 Hz / 0.3 Hz) and supports optional daisy chaining via BUS_SW-driven external low-side FET.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Full-Scale Range | ±60 g - calibrated output range optimized for front/side crash acceleration profiles without clipping below 425 g positive or –1205 g negative mechanical overload. |
| PSI5 Interface | Version 1.3 compliant - supports synchronous/asynchronous modes, programmable time slots, 125/190.5 kBaud, and optional daisy chain via BUS_SW pin. |
| Low-Pass Filter | Selectable 400 Hz 3-pole or 4-pole - suppresses high-frequency noise while preserving crash pulse fidelity up to ~300 Hz. |
| Sample Rate | 16 μs internal (62.5 kSPS), interpolated to 1 μs resolution - enables precise timing alignment of acceleration peaks in safety-critical event capture. |
| Operating Temperature | –40 °C to +125 °C - qualified to AEC-Q100 Grade 1, ensuring reliability in under-hood and cabin-mounted airbag control units. |
| Supply Voltage | VCC = 4.2–17.0 V - compatible with automotive battery rail including cold-crank (4.2 V) and load-dump (up to 17 V) transients. |
| Quiescent Current | 4.0–8.0 mA - enables low-power operation during vehicle standby while maintaining PSI5 readiness. |
Pinout & Package
Pb-free 16-pin QFN package, 6 mm × 6 mm × 1.98 mm, with exposed thermal pad internally connected to VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | PSI5 Power & Data Line Supply | Connects to PSI5 bus through external resistor; powers internal circuitry and enables current-modulated communication on IDATA. |
| IDATA | PSI5 Response Current Output | Modulates current onto PSI5 bus for digital data transmission; requires external pull-up resistor to VCC. |
| VBUF | Buffer Regulator Input | Supplies regulated voltage to VREG/VREGA; provides EMC immunity and dropout resilience; requires 500–1500 nF capacitor to VSS. |
| VREG / VREGA | Digital / Analog Supply Outputs | Provide stable 2.5 V ±75 mV for digital logic and analog signal chain; each requires dedicated 1 μF X7R capacitor to respective ground (VSS/VSSA). |
| BUS_SW | Daisy Chain Gate Driver | Drives gate of external N-channel FET to enable VSS_OUT switching in multi-sensor daisy chain configurations. |
| PCM | Test PCM Output | 4 MHz pulse-code modulated signal proportional to acceleration; enabled via OTP; must be left unconnected if unused. |
Key Features
| Feature | Design Value |
|---|---|
| PSI5 v1.3 Compliance | Enables direct integration into modern automotive safety ECUs with standardized timing, error detection (even parity or 3-bit CRC), and daisy-chain support. |
| Two-Stage Offset Cancellation | Reduces zero-g drift to ±1 LSB (10-bit) over temperature and lifetime, critical for reliable crash/no-crash decision thresholds. |
| Programmable Time Slots | 0.5 μs resolution allows precise synchronization of multiple sensors on shared PSI5 bus, eliminating inter-sensor timing conflicts. |
| Overdamped Z-Axis Sensing Element | Damping ratio 1.87–4.61 ensures minimal resonance-induced measurement error during high-slew crash events. |
| Self-Test Capability | Validates sensor functionality at power-on or on-demand; outputs known acceleration values (e.g., 120–280 LSB for ±60 g range) for diagnostic confirmation. |
Applications
| Front Airbag Crash Detection | Side Impact Sensor Node |
|---|---|
Use Scenario: Mounted in vehicle dashboard to detect rapid longitudinal deceleration during frontal collision. IC Role / Device Role / Timing Role: Z-axis accelerometer providing real-time acceleration data via PSI5 to airbag control unit for deployment decision within <10 ms. Use Value: ±60 g range and 400 Hz LPF match typical crash pulse bandwidth; AEC-Q100 Grade 1 ensures operational integrity at 125 °C ambient. | Use Scenario: Integrated into door module or B-pillar to sense lateral acceleration during side-impact collisions. IC Role / Device Role / Timing Role: Single-axis inertial sensor delivering synchronized PSI5 data in daisy-chained configuration with other cabin sensors. Use Value: BUS_SW pin enables hardware-level daisy chain without additional controller logic; 0.5 μs time slot resolution prevents bus contention. |
| Rollover Detection Auxiliary | Occupant Classification System |
Use Scenario: Used alongside yaw-rate sensors to augment rollover prediction algorithms by detecting vertical acceleration anomalies. IC Role / Device Role / Timing Role: Secondary Z-axis reference sensor feeding supplemental data to chassis domain controller via PSI5. Use Value: 16 μs internal sampling with 1 μs interpolation enables accurate phase alignment with primary inertial measurements. | Use Scenario: Embedded in seat structure to detect occupant presence, position, and weight-class via low-frequency Z-axis motion signatures. IC Role / Device Role / Timing Role: High-stability accelerometer supporting slow-sampling (e.g., 10 Hz) offset-canceled mode for static load differentiation. Use Value: Configurable HPF (0.04 Hz) and two-stage offset cancellation maintain accuracy over extended dwell times without drift accumulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar inertial sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP MMA5112LCWR2 | ±120 g full-scale range; identical PSI5 interface, pinout, and package; higher mechanical overload tolerance (±1205 g negative). | Suitable for higher-deceleration crash zones (e.g., rear-impact or heavy-vehicle applications) where ±60 g is insufficient. | Select when system-level crash pulse modeling exceeds ±60 g but retains same ECU interface and layout. |
| Analog Devices ADXL313WBRMZ-RL | I²C/SPI digital output; 3-axis; ±0.5–±16 g range; no PSI5 support; 3 mm × 5 mm LFCSP package. | Requires protocol translation or MCU firmware adaptation; suited for non-automotive or legacy ECU designs lacking PSI5 infrastructure. | Choose only if PSI5 is unavailable in target platform; not drop-in compatible due to interface, axis count, and package mismatch. |
Compared with MMA5112LCWR2 and ADXL313WBRMZ-RL, the MMA5106LCWR2 offers optimal balance of sensitivity, AEC-Q100 compliance, and native PSI5 integration for cost-sensitive front/side airbag nodes-avoiding protocol conversion overhead while meeting strict automotive timing and reliability requirements.
Availability
MMA5106LCWR2 is available at Aetrix Electronics and suitable for automotive safety systems, airbag control units, and chassis domain controllers requiring stable component supply, AEC-Q100 qualification, and PSI5 interface compatibility.
Supply support for MMA5106LCWR2 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 MMA51xxL product line is engineered specifically for automotive safety-critical inertial sensing, with PSI5 v1.3 compliance, AEC-Q100 Grade 1 qualification, and robust mechanical overload tolerance to meet ASIL-B functional safety requirements.
FAQ
What is the full-scale range and sensitivity of the MMA5106LCWR2?
The MMA5106LCWR2 has a factory-programmed full-scale range of ±60 g. Its sensitivity is 8 LSB/g (10-bit output at 100 Hz), with total sensitivity error ≤ ±5% over temperature and supply voltage. This range and resolution are optimized for front and side airbag crash detection where peak accelerations typically fall between ±20 g and ±60 g.
Does the MMA5106LCWR2 support daisy-chaining, and how is it implemented?
Yes, the MMA5106LCWR2 supports optional daisy chaining via its BUS_SW pin, which drives the gate of an external N-channel MOSFET to switch VSS to VSS_OUT. This enables multiple sensors to share a single PSI5 bus without requiring additional controller resources. Configuration is done via PSI5 programming commands, and time slot assignment prevents bus contention.
What are the key power supply requirements for the MMA5106LCWR2?
The MMA5106LCWR2 requires three regulated supplies: VCC (4.2–17.0 V), VBUF (3.6–4.0 V, decoupled with 500–1500 nF), and separate VREG (2.425–2.575 V) and VREGA (2.425–2.575 V) outputs, each needing a 1 μF X7R capacitor. VSS and VSSA must be kept isolated for analog/digital noise separation.
How does the offset cancellation function work in the MMA5106LCWR2?
The MMA5106LCWR2 implements two-stage offset cancellation: Stage 1 (startup) uses a 0.3 Hz HPF; Stage 2 (runtime) supports selectable HPF cutoffs (0.04 Hz / 0.1 Hz / 0.3 Hz). After cancellation, digital offset is reduced to ±1 LSB (10-bit), ensuring stable zero-g reference over temperature and time-critical for reliable crash/no-crash decisions.
Is the MMA5106LCWR2 qualified for automotive use, and what standards does it meet?
Yes, the MMA5106LCWR2 is qualified to AEC-Q100 Revision G, Grade 1 (–40 °C to +125 °C), and is part of NXP's SafeAssure functional safety solution. It meets PSI5 Version 1.3 specifications and supports diagnostic features including self-test, continuous offset monitoring, and CRC/even parity error detection-enabling ASIL-B compliance in end-system designs.
MMA5106LCWR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- MMA
- Package/Case:
- 16-QFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- Digital
- Axis:
- Z
- Acceleration Range:
- ±60g
- Sensitivity (LSB/g):
- 8
- Sensitivity (mV/g):
- -
- Bandwidth:
- -
- Output Type:
- PCM, SPI
- Voltage - Supply:
- 4.2V ~ 17V
- Features:
- Selectable Low Pass Filter
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (6x6)
MMA5106LCWR2 FAQ
1.How can I place an order for MMA5106LCWR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMA5106LCWR2 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 MMA5106LCWR2 reliable?
The price and inventory of MMA5106LCWR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMA5106LCWR2 is usually 5 days.
3.What payment methods are accepted for MMA5106LCWR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMA5106LCWR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMA5106LCWR2?
MMA5106LCWR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMA5106LCWR2 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 MMA5106LCWR2?
For technical support, including MMA5106LCWR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMA5106LCWR2 requirements.
6.How does Aetrix verify that MMA5106LCWR2 is sourced from the original manufacturer or authorized distributors?
All MMA5106LCWR2 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 MMA5106LCWR2 meets industry standards.
7.What is the process for return or replacement of MMA5106LCWR2?
All MMA5106LCWR2 units undergo pre-shipment inspection (PSI). If there is an issue with MMA5106LCWR2, 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 MMA5106LCWR2 part is unused and in its original packaging.
Return procedure for MMA5106LCWR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMA5106LCWR2 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…
