Bewegungssensoren
Produkte (141)
MMA2301EG - ±225g X-Axis Analog Accelerometer | NXP
The NXP MMA2301EG is a surface-mount micromachined silicon capacitive accelerometer that measures acceleration along a single X axis with a full-scale range of ±225g and a nominal range of 200g, packaged in a 16-pin SOIC. It provides an analog voltage output proportional to acceleration and includes integrated signal conditioning, a factory-trimmed 4-pole low-pass filter with 400 Hz cut-off, and on-chip temperature compensation, so zero-g offset, full-scale span, and filter response require no external components. The device targets shock and vibration sensing in automotive and industrial environments where robust single-axis measurement is required. An accelerometer is a MEMS (micro-electro-mechanical systems) sensor that converts mechanical acceleration into an electrical signal. Within the broader sensor hierarchy it sits under motion sensors, itself a branch of the broader transducer family that includes gyroscopes, magnetometers, and inertial measurement units. The MMA series from NXP/Freescale represents one of the earliest widely adopted analog-output single-axis automotive accelerometers, prized for their robust g-range and factory calibration simplicity. Key features include an integrated 4-pole low-pass filter (fc ≈ 400 Hz) that limits aliasing and out-of-band noise before downstream ADC sampling, factory-calibrated zero-g offset and sensitivity that remove the need for production-line trimming, and an internal temperature compensation scheme that holds sensitivity and offset within tight limits across the automotive –40 °C to +125 °C range. The SOIC-16 wide-body package offers a stable mechanical anchor for the MEMS element and eases hand-rework compared to smaller QFN-based accelerometers. The MMA2301EG is built on NXP's surface micromachining silicon capacitive process: a proof mass suspended by compliant beams forms a differential capacitor with fixed stator fingers; acceleration deflects the mass and unbalances the capacitance, which the on-chip ASIC conditions, filters, and converts to a ratiometric analog output. This architecture delivers high shock survivability and stable operation across the full automotive temperature range with no external clock or reference components required. Typical applications include automotive airbag crash detection (front and side impact sensors), industrial vibration monitoring of rotating machinery, mechanical shock logging in shipping containers and freight, sports impact analysis (helmets, body protectors), and ride-harshness or road-surface sensing in vehicle chassis systems. The high ±225 g full-scale range is specifically sized for short-duration crash pulses that saturate lower-g consumer accelerometers. When designing with this part, place a 0.1 µF decoupling capacitor close to the supply pin and route the analog output away from switching converters to preserve signal integrity. Because the part is ratiometric, the ADC reference should share the same supply rail to retain calibrated sensitivity. This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not found in the manufacturer datasheet, giving engineers a single source for part selection and second-source qualification.
MMA2301EGR2 - ±200g X-Axis MEMS Accelerometer | NXP | Industrial
The NXP (formerly Freescale) MMA2301EGR2 is a surface-mount micromachined silicon capacitive accelerometer with a nominal X-axis measurement range of ±200g (range of ±225g per the test specification), packaged in a 16-pin SOIC (case 475-01) on tape and reel. It delivers a calibrated sensitivity of 9.5 mV/g to 10.5 mV/g from a single 5V supply and is rated for operation from -40C to +125C, making it suitable for harsh industrial and automotive sensing environments. An accelerometer is a micro-electro-mechanical (MEMS) sensor that converts mechanical acceleration into a proportional analog output voltage. The MMA series integrates the sensing element with on-chip signal conditioning, a 4-pole low-pass filter and active temperature compensation, eliminating the need for external trim components. Hierarchy: accelerometer -> MEMS motion sensor -> inertial sensor -> sensor IC -> semiconductor. Key features include zero-g offset, full-scale span and filter cut-off frequency factory-trimmed for direct microcontroller ADC interfacing, a 400 Hz bandwidth (per the 4-pole Butterworth filter characteristic), and analog ratiometric output. The integrated compensation preserves sensitivity and bias across the -40C to +125C automotive grade 2 temperature span. The MMA2301EGR2 uses a silicon capacitive sensing cell with a sealed gaseous damping medium; movement of the proof mass changes the differential capacitance, which is read out by the on-chip ASIC. The surface-micromachined structure provides high shock survivability (>2000g) and long-term bias stability over the -40C to +125C operating range. The 5V analog interface produces a ratiometric output centered on 2.5V, simplifying connection to a 5V ADC input. Typical applications include high-shock event monitoring in industrial machinery, tilt and inclination sensing for elevator and crane safety systems, vehicle suspension and chassis control feedback, airbag crash-detection front-ends, vibration analysis on rotating equipment, and sports/recreation impact logging. The high-g ±225g range addresses regimes where low-g consumer accelerometers clip. When designing with this part, ensure the 5V supply is well decoupled (100 nF plus 1 uF bulk) and that the analog output is buffered when driving long cables or low-impedance ADC reference networks. Place the sensor on a rigid board region away from thermal gradients and PCB flexure to avoid bias drift and false triggering. This page consolidates distributor pricing, true drop-in package-compatible alternatives and lab-style design notes that go beyond a casual datasheet summary.
MMA2612KW - 125g X-Axis DSI2.5 Satellite Accelerometer | NXP
The NXP MMA2612KW is a high-g, single-axis (X-axis) DSI2.5-compatible overdamped satellite accelerometerometer delivering ±125 g nominal full-scale range, housed in a 16-pin QFN-EP (6x6 mm) package. It supports an analog supply range of 6.3 V to 30 V and is qualified to AEC-Q100 for automotive safety applications such as front and side crash detection. An accelerometer is a microelectromechanical (MEMS) sensor that measures proper acceleration along one or more axes; the MMA2612KW belongs to the single-axis high-g class used in satellite sensor positions around a vehicle chassis. It sits hierarchically under inertial sensor -> motion sensor -> sensor IC -> semiconductor. The DSI2.5 protocol allows the device to be daisy-chained with other Freescale/NXP satellite sensors over a two-wire bus, reducing wiring harness cost. Key differentiating features include selectable ±25 g to ±312.5 g nominal full-scale range, selectable 180 Hz two-pole, 400 Hz four-pole, or 800 Hz four-pole low-pass filtering, internal high-side bus switch for DSI2.5 daisy chain applications, and overdamped mechanical response tuned for crash-sensing bandwidths. The device is designed for use with an external microcontroller that issues mandatory DSI2.5 commands to read acceleration data and configure the device. Architecturally, the MMA2612KW integrates a MEMS proof mass with capacitive sensing, a sigma-delta ADC, a digital signal chain with selectable LPF, and a DSI2.5 transceiver with internal high-side switch. The overdamped mechanical transfer function prevents signal saturation from high-frequency vibration during pre-crash events, preserving usable data at the moment of impact. Typical applications include automotive front impact airbag satellite sensors, side impact airbag satellite sensors, automotive crash recording systems, and chassis-level vibration monitoring. Designers should note that the MMA2612KW requires a DSI2.5 master (host MCU) to operate and does not provide a standalone analog or digital output. One critical design consideration: the analog supply (VDD) range of 6.3 V to 30 V allows direct connection to the vehicle 12 V bus, but the internal DSI2.5 bus operates at lower logic levels and requires proper bus termination per the DSI2.5 specification. This page synthesizes verified distributor pricing, DSI2.5 protocol guidance, drop-in NXP alternatives, and practical PCB layout notes not collected in the manufacturer datasheet alone.
MMA2631NKW - ±312g X-Axis Accelerometer, DSI2.5, 16-QFN-EP | NXP
The NXP MMA2631NKW is a high-g, single-axis (X-axis) MEMS accelerometer from the Xtrinsic MMA26xxNKW family, offering a measurement range of ±312g with a 400 Hz bandwidth in a 16-pin QFN-EP (6x6 mm) package. It targets front and side crash detection in automotive airbag systems, where the DSI2.5 (Digital Sensor Interface 2.5) protocol provides a robust differential communication link between the satellite sensor and the central airbag ECU. The 10-bit signed output, 6.3V to 30V supply range, and integrated self-test make it suited to harsh under-hood and chassis-mounted environments. A MEMS accelerometer is a micro-electromechanical sensor that converts acceleration forces into a digital or analog output. In automotive safety systems, satellite accelerometers like the MMA2631NKW are mounted at the periphery of the vehicle (doors, bumper, pillars) and detect crash pulses within microseconds, transmitting the data to the central airbag controller over a DSI bus. This distributed architecture reduces wiring harness complexity and improves crash classification accuracy by enabling multi-point impact sensing across the chassis. Key specifications include a ±312g measurement range, 400 Hz low-pass bandwidth, 10-bit digital resolution via DSI2.5, 6.3V to 30V supply voltage, and an operating temperature range of -40C to +125C. The QFN-EP package provides a low thermal resistance path for the internal regulator and houses the MEMS die with a hermetically sealed cap. The device supports both DSI and DSI2.5 protocols, with backward compatibility to legacy MMA26xxW designs. Typical applications include front-impact airbag satellite sensors, side-impact airbag satellite sensors, pedestrian protection crash sensors, and harsh-environment industrial shock monitoring. The wide supply tolerance allows direct connection to the 12V automotive battery rail without pre-regulation, simplifying ECU design. When integrating the MMA2631NKW, follow the NXP reference layout for the QFN-EP thermal pad and DSI bus termination. Use a twisted-pair DSI connection to the host ECU with the recommended 100 ohm differential impedance and the datasheet-specified ESD protection on the bus pins. This page synthesizes distributor pricing, drop-in alternatives from the same NXP family, and PCB layout guidance not consolidated in the manufacturer datasheet.
MMA3201D - ±45g Dual-Axis Micromachined Accelerometer | NXP
The NXP MMA3201D is a dual-axis (X and Y) silicon capacitive, surface-mount micromachined accelerometer with a measurement range of ±45g and a 400 Hz bandwidth, housed in a 20-pin SOIC package. It integrates signal conditioning, a 4-pole low-pass filter, and temperature compensation, with separate analog outputs for the X and Y axes. The device operates from a single 4.75 V to 5.25 V supply and is qualified to automotive temperature grades, making it suitable for safety-critical vehicle applications. A MEMS accelerometer (Micro-Electro-Mechanical Systems accelerometer) is a sensor that measures the rate of change of velocity (acceleration) along one or more axes by detecting the displacement of a proof mass etched into a silicon structure. Within the sensor taxonomy, the MMA3201D sits at: MEMS accelerometer -> capacitive accelerometer -> inertial sensor -> motion sensor -> semiconductor device. Capacitive MEMS accelerometers use the differential capacitance change between interdigitated combs to convert mechanical deflection into an electrical signal that is then conditioned and filtered on-die. Key features of the MMA3201D include ±45 g full-scale range on both axes, factory-calibrated zero-g offset and full-scale span that require no external trimming, a 4-pole low-pass filter for anti-aliasing, self-test capability for system-level diagnostics, and integrated temperature compensation across the automotive -40 °C to +125 °C range. The 20-pin SOIC surface-mount package simplifies PCB assembly and provides robust mechanical handling compared to smaller QFN/LGA packages used in later Freescale/NXP parts. The device uses a silicon capacitive sensing cell whose capacitance changes proportionally to applied acceleration. An on-chip ASIC performs charge-to-voltage conversion, gain calibration, offset trimming, and 4-pole Butterworth filtering before presenting a ratiometric analog output per axis on dedicated XOUT and YOUT pins. The self-test function exercises the proof mass electrostatically to verify both the mechanical structure and the signal chain in a single command. Typical applications include automotive airbag crash detection, electronic stability control (ESC) sensor inputs, rollover detection, active suspension systems, vehicle dynamic control (VDC) units, industrial vibration monitoring, and platform stabilization. The dual-axis configuration is particularly valuable when both lateral and longitudinal crash signatures must be captured simultaneously. When designing with this device, allocate adequate PCB area for the 20-pin SOIC footprint and follow NXP's recommended decoupling scheme (typically a 0.1 µF ceramic close to VDD). Because the part is RoHS-non-compliant per its datasheet marking, RoHS-restricted end products must select a newer NXP/Freescale successor such as the MMA3202D or MMA26XX family instead.
MMA3201KEGR2 - Dual-Axis ±45g Micromachined Accelerometer | NXP
The NXP Semiconductors MMA3201KEGR2 is a dual-axis (X and Y) surface-mount micromachined capacitive accelerometer with a maximum measurement range of ±45g and an analog ratiometric voltage output. Housed in a 20-pin SOIC package, the device operates from a single 4.75 V to 5.25 V supply, delivers a sensitivity of 50 mV/g typical, and features a 400 Hz signal bandwidth defined by an internal 4-pole low-pass filter. The accelerometer integrates signal conditioning, a four-pole low-pass filter, and temperature compensation on-chip, simplifying external analog front-end design. An accelerometer is a micro-electromechanical systems (MEMS) sensor that measures proper acceleration (vibrations, shocks, tilt, or motion) along one or more axes by detecting the displacement of a proof mass relative to the silicon frame via capacitive sensing. The MMA3201KEGR2 belongs to a family of silicon capacitive, micromachined accelerometers in which the silicon proof-mass deflection produces a differential capacitance change proportional to applied force. Within the broader sensor taxonomy, this device is a MEMS sensor -> acceleration sensor -> inertial sensor, and within an electronic system it sits at the perception layer of signal chains that require motion feedback, such as airbag controllers, industrial vibration monitors, and tilt platforms. Key specifications include a sensitivity of 47.5 mV/g to 52.5 mV/g, a 0 g offset of 2.5 V nominal (at Vdd = 5 V), a 4-pole low-pass filter with a -3 dB corner at 400 Hz, ESD protection to ±2000 V (HBM), and an operating temperature range of -40 °C to +105 °C. The dual-axis X/Y output is ratiometric with Vdd, allowing simple ADC interfacing. The 20-SOIC form factor exposes both analog outputs and a self-test pin for built-in diagnostics. Typical applications include automotive airbag crash detection, industrial vibration monitoring, inertial measurement units, tilt/inclination sensing, seatbelt pretensioner triggers, and platform stabilization. The wide ±45 g range and 400 Hz bandwidth are well-suited to crash-pulse profiles and machine-condition monitoring. A key design consideration when using the MMA3201KEGR2 is the ratiometric output: the 0 g offset and sensitivity scale with Vdd, so an accurate, low-noise 5 V regulator is required for absolute accuracy. Decouple Vdd close to the package with a 100 nF ceramic in parallel with at least 1 µF of bulk capacitance, route analog outputs over a ground reference, and place the self-test pin so it can be driven high through a dedicated GPIO for production diagnostics. This page synthesizes distributor pricing, drop-in alternatives, and design notes from sources that augment the manufacturer datasheet, including parametric comparison and qualified replacement guidance to accelerate sourcing and second-source decisions.
MMA3202EG - ±112.5g/±56.3g Dual-Axis Analog Accelerometer | NXP
The NXP MMA3202EG is a surface-mount, dual-axis (X and Y) silicon capacitive micromachined accelerometer with separate analog outputs for each axis, housed in a 20-pin SOIC wide-body package. It measures full-scale accelerations of ±112.5g on the X-axis and ±56.3g on the Y-axis, with a 400 Hz signal bandwidth and a typical sensitivity of 20 mV/g (X) and 40 mV/g (Y), making it suitable for high-shock event recording such as airbag deployment detection. The device operates from a single 5 V analog supply and integrates signal conditioning, a 4-pole low-pass filter, temperature compensation, and a g-select input that allows the user to switch between two pre-calibrated sensitivities. An accelerometer is a micro-electromechanical (MEMS) sensor that converts gravitational or inertial acceleration along one or more axes into an electrical signal proportional to the applied force. Capacitive accelerometers like the MMA3202EG use a movable proof mass and fixed electrode plates to form a differential capacitor; acceleration changes the gap and therefore the capacitance, which is read out by an on-chip ASIC. This sub-family belongs to the wider hierarchy of inertial sensors (accelerometer → motion sensor → sensor IC → semiconductor), of which the MMA3202EG represents a high-g, dual-axis analog variant used primarily in automotive crash-detection systems. Key features include ±112.5g / ±56.3g full-scale ranges, 20 mV/g and 40 mV/g nominal sensitivity, a self-test pin for in-system verification, an external g-select pin for switching between two factory-trimmed sensitivities, a 4-pole low-pass filter on each channel, and ratiometric analog outputs centered at Vdd/2 (≈2.5 V) at 0 g. The 20-pin SOIC wide-body package provides a robust mechanical mounting for under-dash automotive environments and supports standard surface-mount reflow. The MMA3202EG is built on a high-volume silicon capacitive MEMS process with an integrated BiCMOS ASIC, achieving tight sensitivity tolerance, low zero-g offset drift over temperature, and automotive-grade reliability. The on-chip 4-pole Butterworth-type filter limits aliasing and band-limits noise without external components, simplifying the analog interface to the host microcontroller's ADC. Typical applications include automotive airbag front and side crash sensors, electronic stability control rollover detection, industrial high-shock event recorders, vibration monitoring in heavy machinery, and seatbelt pretensioner triggers. The wide -40 °C to +125 °C operating range and AEC-Q100 qualification make it well-suited for under-hood and chassis-mounted designs. When designing with this part, place the device close to the system ground reference, decouple Vdd with a 0.1 µF ceramic capacitor placed within 5 mm of the supply pin, and route the X and Y outputs as differential pairs back to the host ADC with proper guarding. The g-select pin must be tied to a defined logic level (not left floating) to prevent indeterminate output during power-up. This page synthesizes real distributor pricing, drop-in pin-compatible alternatives, and practical PCB design notes not found in a single manufacturer datasheet, giving engineers a one-stop reference for the MMA3202EG.
MMA3204EGR2 - ±112.5g/±33.75g Dual-Axis Accelerometer | NXP
The NXP MMA3204EGR2 is a dual-axis (X and Y) silicon capacitive micromachined accelerometer with signal conditioning, a 4-pole low-pass filter, and on-chip temperature compensation, delivered in a 20-pin SOIC surface-mount package. The X-axis is rated for ±112.5g full-scale range while the Y-axis is rated for ±33.75g, giving a wide dynamic range suited for both high-shock and lower-g tilt/vibration channels in a single device. The signal bandwidth extends to 400 Hz and each axis has a dedicated analog output. An accelerometer is a MEMS (micro-electromechanical systems) sensor that converts mechanical acceleration into an analog voltage proportional to the applied g-force. The MMA3204EGR2 belongs to the surface-micromachined capacitive sensor family, hierarchically classified as accelerometer -> motion sensor -> inertial sensor -> MEMS -> sensor IC. It integrates mechanical structure, analog front-end, filtering, and self-test functions in one package, simplifying system design compared to discrete piezoelectric or piezoresistive alternatives. Key differentiating specifications include the dual-range design (high-g X, low-g Y in the same IC), dedicated per-axis outputs, a 4-pole low-pass filter for noise suppression, and integrated temperature compensation that stabilizes zero-g offset and sensitivity across the operating range. The two separate outputs also let designers route each axis through different gain stages downstream. The MMA3204EGR2 uses a silicon capacitive sense element whose proof-mass movement modulates a differential capacitor bridge read out by on-chip CMOS signal conditioning. This architecture delivers low noise, low power, and good DC response, while the factory-calibrated zero-g offset and sensitivity reduce the need for end-of-line calibration. The exposed SOIC pad also aids thermal dissipation during sustained high-g events. Typical applications include automotive airbag crash sensing, electronic stability control, industrial vibration monitoring, and tilt/inclination measurement where two axes are measured simultaneously. The wide ±112.5g X-axis range makes the device particularly suited for harsh shock environments. When designing with this part, place 0.1 uF decoupling capacitors close to the supply pins and follow the SOIC-20 land pattern recommended by NXP. Verify that the bandwidth setting of the on-chip filter matches the application's highest frequency of interest to avoid aliasing or loss of useful spectral content. This page consolidates verified distributor pricing, drop-in alternatives, and practical design guidance for engineers evaluating or sourcing the MMA3204EGR2.
MMA3204KEG - ±100g/±30g Dual-Axis Accelerometer | NXP
The NXP MMA3204KEG is a dual-axis (X and Y) silicon capacitive, micromachined accelerometer in a 20-pin SOIC package. It measures acceleration along two independent axes simultaneously, with a ±112.5g (±100g typical) full-scale range on the X axis and ±33.75g (±30g typical) full-scale range on the Y axis. The sensor operates from a single 4.75 V to 5.25 V supply and provides separate, ratiometric analog outputs for each axis. An accelerometer is a micro-electromechanical sensor (MEMS) that measures proper acceleration (the rate of change of velocity relative to free fall). It belongs to the broader category of motion sensors, which itself is a subset of sensors and transducers. The MMA3204KEG sits within this hierarchy as a dual-axis linear accelerometer, commonly used in industrial and consumer systems that need to detect tilt, shock, vibration, or impact. MEMS accelerometers convert mechanical motion into a change in capacitance, which is then conditioned and amplified into a voltage proportional to acceleration. Key features include integrated signal conditioning, a four-pole low-pass filter for noise bandwidth control, on-chip temperature compensation, and g-select input pins that allow designers to switch between full-scale ranges. The X-axis sensitivity is 20 mV/g and the Y-axis sensitivity is 66.67 mV/g, with 0 g output at approximately 2.5 V. The device is qualified to the automotive temperature grade and supports surface-mount assembly. Internally, the MMA3204KEG uses a capacitive sensing cell in which a differential capacitor changes capacitance in response to acceleration, followed by a switched-capacitor amplifier, low-pass filter, and output buffer. This architecture provides stable ratiometric output across the operating temperature range, simplifying firmware calibration. Typical applications include appliance control, vibration recording, impact monitoring, hard drive protection, virtual reality input devices, and sports diagnostics. The dual-axis capability is particularly valuable in applications where both lateral and vertical motion need to be measured with a single component. When designing with this device, add 0.1 µF decoupling capacitors close to the supply pin and follow good PCB grounding practice to preserve signal integrity. The g-select pins must be tied high or low to configure the desired full-scale range at power-up. This page synthesizes distributor pricing, drop-in same-brand alternatives from the MMA3200 series, and practical design notes not found in the manufacturer datasheet alone.
MMA3204KEGR2 - ±112.5g/±33.75g Dual-Axis 5V Accelerometer | NXP
The NXP MMA3204KEGR2 is a dual-axis (X, Y) micromachined surface-mount accelerometer in a 20-pin SOIC wide-body package with measurement ranges of ±112.5g on the X axis and ±33.75g on the Y axis. It operates from a single 4.75 V to 5.25 V supply, draws [DATA_NEEDED: supply current] from the rail, and provides ratiometric analog voltage outputs proportional to applied acceleration, with sensitivities of 20 mV/g on the X channel and 66.67 mV/g on the Y channel. The internal signal path includes signal conditioning, a four-pole low-pass filter, and temperature compensation, and the part is AEC-Q100 qualified for automotive applications. An accelerometer is a MEMS (micro-electro-mechanical systems) sensor that converts mechanical acceleration into a measurable electrical signal - typically a voltage proportional to the g-force acting along one or more sensing axes. Within the broader sensor taxonomy, the MMA3204KEGR2 sits in the linear (DC) inertial sensor family, alongside gyroscopes and inclinometers, and is sub-classified as a high-g automotive crash-detection accelerometer. Its dual-axis sensing lets a single device capture both lateral and longitudinal vehicle deceleration events simultaneously, reducing PCB area and BOM cost relative to two discrete single-axis parts. Key feature highlights for engineers include dual-axis sensing in one IC, sensitivity of 20 mV/g (X) and 66.67 mV/g (Y) at 5 V supply, internal four-pole low-pass filter with a 400 Hz bandwidth, temperature compensation across the -40 °C to +125 °C automotive range, and separate analog outputs for each axis. The 20-pin SOIC wide-body (WSOIC) package provides robust mechanical lead strength suitable for under-hood mounting and through-reflow automotive assembly. Architecturally, the MMA3204KEGR2 uses a surface-micromachined capacitive sensing element with on-chip CMOS signal conditioning. The four-pole active low-pass filter limits aliasing and broadband mechanical noise, and the ratiometric output makes sensitivity scale linearly with VDD - a feature that simplifies ADC scaling in 5 V microcontroller front-ends. The part's automotive qualification (AEC-Q100) and Last Time Buy lifecycle status position it as a mature solution for end-of-life redesign planning. Typical applications include automotive airbag crash sensors, electronic stability control rollover detection, ride-height and suspension travel sensing (Y axis), industrial shock and vibration monitoring, and ruggedized equipment tilt and impact logging. Its high-g range makes it especially suited to crash-detection events that exceed the dynamic range of consumer-grade accelerometers. When designing with this part, note that its lifecycle status is Last Time Buy and that Rochester Electronics holds the active stock franchise; engineers should plan volume purchases before the part enters obsolescence, or evaluate same-family alternatives such as MMA3201KEG and MMA3202KEG that share the same package and pinout. This page synthesizes Verified Web Data, distributor stock information, and drop-in alternative guidance not found in any single manufacturer document, giving engineers a single-decision-tree view of the part.
MMA3221EGR2 - ±50g/±20g Dual-Axis Analog Accelerometer | NXP
The NXP Semiconductors MMA3221EGR2 is a surface-mount, dual-axis (X and Y) silicon capacitive, micromachined accelerometer with integrated signal conditioning and a 4-pole low-pass filter, supplied in a 20-pin SOIC package. It measures acceleration on the X axis up to ±50g and on the Y axis up to ±20g with a bandwidth of 400 Hz, delivering an analog voltage output proportional to acceleration. An accelerometer is a MEMS (micro-electromechanical systems) sensor that converts gravitational or mechanical acceleration into a measurable electrical signal. In the system hierarchy, it sits within motion sensors, which are a subset of inertial measurement units (IMUs) and, more broadly, sensors. Capacitive MEMS accelerometers detect displacement of a proof mass via changes in capacitance between interdigitated comb fingers, then convert that capacitance change into a voltage using on-chip signal conditioning. Key features of the MMA3221EGR2 include independent full-scale ranges per axis (X: ±50g, Y: ±20g), a 4-pole low-pass filter for noise bandwidth limiting, integrated signal conditioning, and ratiometric analog output. The device operates from a single 5.0 V supply and includes self-test capability and over-range protection. Its robust SOIC-20 package is designed for surface-mount assembly and is well suited to high-vibration environments. The MMA3221EGR2 uses a silicon capacitive MEMS proof mass with on-chip ASIC signal conditioning. The architecture includes a precision charge integrator, temperature compensation, and a 4-pole active low-pass filter. The ratiometric analog output simplifies ADC interfacing and improves noise immunity in industrial environments. Per the manufacturer datasheet, the device provides stable sensitivity across the -40 °C to +105 °C operating range. Typical applications include airbag deployment systems and crash detection, vehicle stability control and rollover sensing, industrial vibration monitoring, tilt and inclination sensing in harsh environments, and tilt measurement for heavy machinery. Independent X/Y full-scale ranges allow the X axis to capture high-g crash events while the Y axis measures lower-g rollover events from a single sensor. When designing with this part, ensure adequate PCB decoupling near the supply pin and use ratiometric ADC conversion to cancel supply noise. Route the analog outputs away from high-current switching traces to preserve signal integrity. This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes not found in the manufacturer datasheet alone.
MMA5112KW - ±120g Z-Axis PSI5 Satellite Accelerometer | NXP
The NXP MMA5112KW is a ±120g Z-axis (vertical-axis) overdamped PSI5 satellite accelerometer in a 16-pin QFN (6x6 mm) package designed for airbag crash detection and automotive restraint systems. It is part of the Xtrinsic MMA51xxKW SafeAssure family of PSI5 Version 1.3 compatible devices, with integrated PSI5 communication, on-chip signal conditioning, and a SafeAssure functional-safety pedigree suitable for ASIL-rated automotive safety applications. An automotive inertial sensor is a MEMS transducer that converts mechanical acceleration into a proportional electrical signal for downstream crash-decision or rollover logic. PSI5 (Peripheral Sensor Interface 5) is a two-wire, current-driven digital interface standardized for automotive sensor applications. The MMA5112KW sits at the front end of the airbag sensor cluster, receiving power over the PSI5 bus and back-transmitting digitized acceleration frames synchronously to the satellite ECU. Key features include a full-scale range of ±120 g along the Z axis, a 16-pin QFN (HQCCN) surface-mount package, automotive temperature grade, and overdamped mechanical response for clean crash-pulse fidelity without ringing. The PSI5 interface handles both power delivery and bidirectional digital communication, eliminating the need for a separate analog output harness. The part is qualified to NXP SafeAssure functional-safety process flows. The device integrates a surface-micromachined MEMS sensing cell, a sigma-delta ADC front end, PSI5 protocol framing, and diagnostic logic that reports internal faults over the PSI5 status field. Its wide supply range, integrated overvoltage and reverse-polarity tolerance on the PSI5 bus, and self-test capability make it a robust front end for harsh under-seat or B-pillar satellite installations. Typical applications include front, side, and rear airbag satellite sensors, knee airbag crash sensors, rollover detection satellite modules, and pre-crash occupant positioning sensors - anywhere a z-axis PSI5 satellite must discriminate crash severity during the first few milliseconds of an event. Designers should keep the PSI5 bus decoupling tight (typically 100 nF at the sensor pins), observe NXP's PSI5 bus-topology EMC guidelines, and route the device's GND paddle to a low-impedance plane to preserve signal integrity on the PSI5 Manchester-coded output. This page synthesizes distributor pricing, drop-in alternatives sourced from NXP cross-reference data, and practical PSI5 design notes not found in the summary datasheet excerpts.
MMA5112KWR2 - ±120g Z-Axis PSI5 Accelerometer | NXP | 16-QFN
The NXP MMA5112KWR2 is a single-axis Z-axis overdamped satellite accelerometer from the Xtrinsic MMA51xxKW family, offering a full-scale range of ±120g in a 16-pin QFN (6x6 mm) package with exposed pad. It interfaces via the PSI5 (Peripheral Sensor Interface 5) Version 1.3 automotive protocol and is qualified as an AEC-Q100 solution under NXP's SafeAssure program for safety-critical chassis applications. An accelerometer is a micro-electromechanical (MEMS) sensor that converts linear acceleration into a proportional analog or digital output. Within the broader sensor hierarchy, the MMA5112KWR2 sits as: MEMS accelerometer -> inertial sensor -> motion sensor -> sensor IC -> semiconductor. PSI5 accelerometers are specifically designed for satellite (peripheral) nodes in automotive safety systems, communicating on a daisy-chained two-wire current loop that is robust against EMC and ground offset. Key differentiating features include a ±120g measurement range, overdamped mechanical response (no resonance peak within the bandwidth), 4.2 V to 17 V supply range compatible with automotive 12 V bus systems, and an integrated PSI5 transceiver supporting standard PSI5 v1.3 frame formats. The overdamped architecture eliminates aliasing and spurious high-frequency excitation, making the part well-suited to crash detection and airbag pre-crash sensing where mechanical ringing would corrupt the deceleration profile. The device uses NXP's high-aspect-ratio MEMS element with signal conditioning ASIC integrated in the same QFN package. The sensor element is hermetically sealed and factory-trimmed for sensitivity and offset, eliminating the need for external calibration. The PSI5 interface supports both 10-bit and 12-bit data widths, asynchronous and synchronous sampling modes, and X/Y/Z synchronization across multiple satellite nodes. Typical applications include frontal airbag crash sensors, side-impact pre-crash detection, pedestrian protection satellite modules, and rollover detection in advanced airbag systems. The 6x6 mm QFN footprint is the standard footprint for PSI5 satellite accelerometers, enabling PCB layout reuse across a platform. When designing with this device, ensure the PSI5 bus termination resistor and protection circuitry are correctly sized for the 12 V automotive battery environment, and observe AEC-Q100 thermal and vibration qualifications on the host PCB. The exposed thermal pad must be connected to ground for mechanical stability and thermal dissipation. This page synthesizes distributor stock, AEC-Q100 qualification data, drop-in family-member alternatives, and PCB-level design notes for satellite airbag applications that are not consolidated on the manufacturer product page.
MMA5124KW - ±240g Z-Axis PSI5 Inertial Sensor | NXP
The NXP Semiconductors MMA5124KW is a SafeAssure PSI5 Version 1.3-compatible, overdamped Z-axis satellite accelerometer with a ±240g full-scale range, housed in a 16-pin QFN (6x6 mm) package. It belongs to the Xtrinsic MMA51xxKW family of AKLV27-compatible satellite sensors designed for harsh automotive crash detection environments. The device operates from a 4.2V to 17V supply, integrates on-chip signal conditioning, and communicates via the PSI5 (Peripheral Sensor Interface) v1.3 protocol over a two-wire current-loop interface. An accelerometer is a micro-electromechanical (MEMS) sensor that measures proper acceleration along one or more axes; the MMA5124KW specifically senses acceleration along the Z-axis only. Within the broader sensor taxonomy, the part belongs to the class of single-axis high-g accelerometers used in automotive airbag and satellite-sensor subsystems. The PSI5 interface (Peripheral Sensor Interface, version 1.3) is a standardized digital communication protocol widely adopted in automotive safety electronics for connecting remote satellite crash sensors to a central airbag control unit (ACU). Key specifications of the MMA5124KW include a ±240g measurement range, overdamped mechanical frequency response designed for crash pulse capture, integrated PSI5 v1.3 transmitter, on-chip EEPROM for calibration, low-power standby mode, and SafeAssure functional-safety documentation. The device's overdamped response avoids saturation from the high-frequency, high-amplitude crash pulses typical of airbag deployment scenarios. The MMA5124KW is built on NXP's high-g MEMS process with a sealed cavity QFN package qualified to automotive grade requirements. Its integrated PSI5 interface eliminates the need for an external ADC, simplifying satellite module design. The device supports daisy-chain topologies and offers 10-bit Manchester-coded PSI5 data transmission with configurable sampling rates. Typical applications include front and side airbag satellite sensors, pedestrian protection impact modules, and peripheral crash detection nodes. The 16-QFN (6x6) package suits compact PCB layouts typical of satellite sensor modules mounted at vehicle periphery locations. When designing with this part, observe PSI5 bus termination and synchronization timing as specified in the NXP datasheet. Use the integrated EEPROM for per-module calibration to compensate mounting-position tolerances. Maintain supply decoupling within 5 mm of the VCC pin and follow NXP's reference layout for EMI/ESD performance under automotive conditions. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet. The MMA5124KW is engineered for AKLV27 protocol compatibility, enabling retrofit into existing automotive safety architectures.
MMA5148KW - ±480g Z-Axis PSI5 Satellite Accelerometer | NXP
The NXP Semiconductors MMA5148KW is a ±480g Z-axis (vertical-axis) overdamped satellite accelerometer designed for PSI5 (Peripheral Sensor Interface 5) and AK-LV27 in-vehicle networks. It is part of the Xtrinsic MMA51xxKW family of SafeAssure sensors, housed in a 16-pin QFN (6x6 mm) surface-mount package. The device supports supply voltage of 4.2V to 17V and uses PCM/SPI digital output for high-speed communication with the satellite ECU. An accelerometer is a micro-electromechanical (MEMS) sensor that measures proper acceleration along one or more axes. In automotive safety systems, satellite accelerometers like the MMA5148KW reside in peripheral nodes (crash zones, doors, pillars) and transmit inertial data to a central airbag control unit (ACU). The PSI5 protocol is an open standard for point-to-point sensor interfaces widely used in airbag, seatbelt pretensioner, and pedestrian protection systems. Key features include ±480g full-scale measurement range, overdamped mechanical response for accurate pulse detection, 16-QFN small outline package, and a wide operating temperature range suitable for under-hood and crash-zone deployment. The device is part of the NXP SafeAssure functional-safety program (FMEDA and safety manuals available), supporting ISO 26262 ASIL ratings when integrated properly. Architecturally, the MMA5148KW integrates a MEMS g-cell with a CMOS ASIC that provides signal conditioning, temperature compensation, and a digital PSI5 interface. The overdamped sensor element reduces mechanical ringing after high-g events, enabling the central ECU to discriminate multiple crash pulses that occur within milliseconds. Typical applications include front and side airbag satellite sensors, crash detection modules, seatbelt pretensioner sensors, and pedestrian protection accelerometer nodes. Its PSI5 compatibility allows direct connection to NXP, Infineon, Renesas, and other automotive-grade airbag controllers. When designing with this device, follow NXP's reference layout in the datasheet, place decoupling capacitors within 2 mm of the supply pins, and validate the PSI5 bus timing against the v1.3 specification to ensure interoperability with the target ECU. The device is qualified to AEC-Q100, making it suitable for automotive production. This page synthesizes distributor pricing, drop-in alternatives within the MMA51xx family, and practical design notes not found in a single manufacturer page, giving engineers a consolidated reference for satellite accelerometer selection.
MMA5148KWR2 - Z-Axis 480g PSI5 Accelerometer | NXP
The NXP MMA5148KWR2 is a Z-axis, ±480g-range overdamped silicon MEMS accelerometer from the Xtrinsic MMA51xxKW PSI5 family, housed in a 16-pin QFN (6x6 mm) package. Designed as a SafeAssure solution for automotive satellite sensor applications, it is AKLV27 and PSI5 Version 1.3 compatible, with the full-scale range and bandwidth optimized for satellite crash-sensing use cases. The device communicates over the PSI5 (Peripheral Sensor Interface 5) two-wire current-loop protocol commonly used in airbag and restraint systems. An accelerometer is a micro-electromechanical sensor that measures proper acceleration (the rate of change of velocity) along one or more axes. The MMA51xxKW family sits within the broader taxonomy of inertial sensors, sitting beside gyroscopes in the IMU (Inertial Measurement Unit) category. Within the accelerometer family, the MMA51xxKW parts are single-axis (Z-axis only) overdamped devices specifically tuned for the high-shock, high-bandwidth regime of automotive crash sensing, where they must remain accurate under sustained vibration and instantaneous g-loads. Key features include a ±480g full-scale range, overdamped mechanical response for crash-pulse fidelity, on-chip PSI5 transponder, optional Manchester-coded or PSI5-A/B/C operating modes, and a wide operating temperature range. The 16-QFN (6x6 mm) package supports surface-mount assembly with an exposed pad for thermal dissipation, and the part is qualified to automotive quality standards typical of NXP SafeAssure family members. The KWR2 suffix denotes tape-and-reel packaging. At the architecture level, the device integrates a MEMS sensing element with a signal-conditioning ASIC in a single overmolded QFN. The overdamped mechanical transfer function eliminates high-Q resonant ringing, which is critical when capturing short-duration crash pulses; a less-damped sensor would ring and corrupt the deceleration profile read by the satellite ECU. Typical applications include front and side airbag satellite sensors, restraint-system electronic control units, and PSI5 daisy-chain satellite modules. It is also used in body and chassis electronic safety systems. When designing with this part, engineers should pay close attention to the PSI5 synchronization and parity protocol, the daisy-chain initialization sequence, and the requirement to configure the g-slave address range during ECU bring-up.
MMA5206KW - PSI5 X-Axis 60g Accelerometer | NXP Semiconductors
The NXP Semiconductors MMA5206KW is a PSI5 (Peripheral Sensor Interface 5) inertial sensor designed as a single-axis X-direction accelerometer with a full-scale range of ±60g and a 400 Hz maximum bandwidth, housed in a 16-pin QFN (6x6 mm) package with exposed pad. It belongs to the NXP Xtrinsic MMA52xxKW family of automotive-grade inertial sensors and operates over a wide 5V/9V/12V/15V supply range with automotive temperature grade. An accelerometer is a micro-electromechanical (MEMS) sensor that measures proper acceleration along one or more axes and outputs a signal proportional to that force, enabling detection of motion, tilt, vibration, and shock. Within the broader sensor taxonomy, a single-axis accelerometer like the MMA5206KW sits under MEMS motion sensor -> accelerometer -> inertial measurement unit -> sensor -> semiconductor. PSI5 is an automotive sensor interface standard used to power the sensor and transmit synchronous or asynchronous sensor data on the same two-wire bus at 125 kbps, eliminating dedicated signal wires. Key features of the MMA5206KW include ±60g full-scale range for high-shock sensing, 400 Hz signal bandwidth, automotive temperature grade qualification, integrated PSI5 transceiver with on-chip sync/transmit logic, and a small 6x6 mm QFN-16 footprint suitable for space-constrained safety-critical modules. The exposed thermal pad improves thermal coupling and mechanical stability when soldered to a PCB ground pour. Technically, the device combines a MEMS g-cell with a mixed-signal ASIC that performs amplification, offset compensation, and PSI5 protocol generation. A key design consideration is the external capacitor on the VCC node for energy storage during PSI5 synchronization pulses. According to the manufacturer datasheet, this capacitor is required because PSI5 supplies the sensor through a current-limiting resistor, and the sensor must buffer the charge internally. Typical applications include airbag front crash sensors, side-impact satellite sensors, rollover detection modules, and pedestrian-protection impact sensors. The ±60g range suits high-deceleration crash events while the PSI5 interface supports daisy-chained wiring common in airbag electronic control units. When designing with this part, place the VCC storage capacitor as close as possible to pin 1 with a low-ESR ceramic, and route the IDATA line through the recommended PSI5 current-setting resistor. Verify the synchronization timing budget because PSI5 is a time-deterministic protocol that requires precise bus arbitration among multiple satellite sensors.
MMA5212AKW - ±120g PSI5 X-Axis Accelerometer | NXP
The NXP Semiconductors MMA5212AKW is an overdamped X-axis satellite accelerometer supporting PSI5 V1.3 asynchronous mode, with a full-scale range of ±120 g, housed in a 16-pin QFN (6 x 6 mm) HQCCN package. It belongs to the Xtrinsic MMA52xxAKW family, a SafeAssure functional-safety solution targeting automotive airbag and passive-safety satellite sensor nodes. Background: A PSI5 accelerometer is a peripheral satellite sensor (PSS) in an automotive restraint system that communicates over the PSI5 (Peripheral Sensor Interface 5) two-wire current-loop bus. It converts mechanical acceleration into a digital PSI5 frame that the central airbag ECU uses to decide when to deploy restraints. The hierarchy is: accelerometer -> inertial sensor -> motion sensor -> MEMS sensor -> semiconductor IC. The X-axis designation indicates single-axis sensing along one in-plane axis, making the device ideal for frontal or peripheral impact detection modules. Key features include 16-bit data output representation, a sensitivity of approximately 0.244 mV/g (based on 120 g full-scale), a typical 5.0 V supply rail, and automotive-grade qualification (AEC-Q100). The overdamped mechanical transducer suppresses high-frequency vibration, eliminating aliasing noise before the digital PSI5 frame is transmitted. The 16-QFN (6 x 6 mm) HQCCN package provides a small PCB footprint suitable for tight satellite-module enclosures. Technically, the device integrates a MEMS proof-mass transducer with a sigma-delta conversion chain and an embedded Manchester-coded PSI5 transceiver. Synchronization and data framing are managed by an on-chip state machine, and the part supports external sync pulses from the ECU for time-multiplexed multi-satellite configurations. Internal diagnostics and SafeAssure documentation assist ISO 26262 system integration at the ECU level. Typical applications include front airbag satellite sensors, side-impact satellite modules, and pedestrian-protection satellite accelerometers that require a PSI5 interface. The automotive operating range and SafeAssure positioning also make it suitable for rollover detection satellite nodes. When designing with the MMA5212AKW, ensure correct PSI5 bus termination per the PSI5 V1.3 specification, observe TVS protection on the two-wire interface, and follow NXP's recommended PCB footprint for the HQCCN-16 6 x 6 mm package. Refer to the manufacturer datasheet for the latest initialization timing diagrams and sync-modes table. This page synthesizes distributor pricing, same-family PSI5 alternatives, and practical design notes not consolidated in the manufacturer datasheet.
MMA5212AKWR2 - ±120g X-Axis PSI5 Satellite Accelerometer | NXP
The NXP MMA5212AKWR2 is a single-axis, X-lateral MEMS accelerometer with a ±120g full-scale range, designed as a peripheral airbag satellite sensor that communicates over the PSI5 (Peripheral Sensor Interface 5) Version 1.3 asynchronous-mode bus. Housed in a 16-pin QFN exposed-pad package (6 mm × 6 mm), the device combines an overdamped MEMS sensing element with a built-in ASIC that performs on-chip signal conditioning, temperature compensation, and PSI5 frame formatting. An accelerometer is a micro-electromechanical sensor that converts physical acceleration into a measurable electrical signal. Within the broader sensor hierarchy, it sits at the inertial sensor family, sharing the category with gyroscopes, magnetometers, and 6-axis IMUs. The MMA52xxAKW family is positioned at the automotive-grade peripheral satellite node in a PSI5 airbag network, where it reports crash-relevant deceleration events to a central airbag ECU. Key features include a 5 V / 9 V / 12 V / 15 V compatible PSI5 interface, internal self-test, automotive temperature grade qualification, and a -40 °C to +125 °C operating range. The overdamped mechanical transfer function suppresses high-frequency vibration that would otherwise cause false crash triggers in rough-road or door-slams scenarios. The device is a NXP SafeAssure solution, meaning it has been developed and documented under NXP's functional-safety process to support ISO 26262 systems. Architecturally, the part uses a capacitive MEMS proof mass with sigma-delta conversion and digital post-processing, which provides low noise and stable sensitivity over temperature without external trimming. The PSI5 peripheral mode frames deliver acceleration data, status bits, and a 10-bit temperature word each synchronization cycle. Typical applications include front or side satellite airbag sensors, pedestrian protection modules, and chassis-condition monitoring nodes. Design considerations include placing the recommended 2.2 nF / 470 pF / 15 nF external capacitor network (C1–C5) within a few millimeters of the supply and data pins to maintain PSI5 signal integrity and EMC margins. This page consolidates distributor pricing, drop-in cross-family alternatives, and PCB layout notes the NXP safety manual only summarizes, so engineers can validate sourcing and footprint fit on a single page.
MMA5212KW - ±120g X-Axis PSI5 Satellite Accelerometer | NXP
The NXP MMA5212KW is an overdamped single-axis X-axis satellite accelerometer with ±120g full-scale range, 400 Hz bandwidth, and PSI5 (Peripheral Sensor Interface 5) Version 1.3 compatible digital output, housed in a 16-pin QFN (6x6 mm) package with exposed pad. It is a member of the Xtrinsic MMA52xxKW family, a SafeAssure functional-safety solution, and is AKLV27 protocol compatible for airbag satellite applications. The device operates from a single 5V/9V/12V/15V supply rail selectable by protocol command, integrates a g-cell MEMS sense element with a Sigma-Delta ADC, and outputs an 11-bit Manchester-coded PSI5 digital frame. A satellite accelerometer is a single-axis MEMS sensor mounted at the periphery of a vehicle (e.g., door pillar, bumper reinforcement, or seat rail cross-member) that detects crash-pulse deceleration early in an event and reports it to a central airbag ECU over a two-wire current-loop PSI5 bus. The MMA5212KW belongs to the inertial sensor -> accelerometer -> MEMS accelerometer -> safety sensor taxonomy and is qualified to automotive-grade temperature ranges (-40C to +125C) with full AEC-Q100 conformance. Key features include overdamped mechanical response (no resonance peak within the 400 Hz bandwidth), user-selectable 5V/9V/12V/15V supply rail (PSI5 V1.3 compliance), 11-bit output resolution plus optional 2-bit self-test/status, integrated diagnostics, and SafeAssure documentation. The exposed thermal pad (EP) provides a low-resistance thermal path to PCB copper, essential for reliable operation across automotive temperature extremes. Typical applications include front and side impact satellite sensors, airbag ECU peripheral nodes, pedestrian protection bumper-mounted sensors, and seat rail occupant classification systems. The PSI5 Manchester-coded two-wire interface allows daisy-chaining of multiple satellites on one ECU input, simplifying wiring harness complexity. When designing with this device, ensure the PSI5 current-loop termination resistor and blocking capacitor values follow the PSI5 V1.3 specification. The exposed pad must be soldered to a continuous PCB copper ground plane to meet the AEC-Q100 thermal-cycling and mechanical-shock reliability targets.
MMA5212KWR2 - 120g X-Axis PSI5 Inertial Sensor | NXP Semiconductors
The NXP Semiconductors (formerly Freescale) MMA5212KWR2 is a 120g range, single-axis (X-axis) overdamped PSI5-compatible inertial accelerometer housed in a 16-pin QFN (6x6) package with exposed thermal pad. The device is part of the Xtrinsic MMA52xxKW SafeAssure family, supports AKLV27 and PSI5 Version 1.3 protocols, and is qualified for automotive satellite crash-sensing applications. It operates with supplies of 5V, 9V, 12V, and 15V, which are the standard PSI5 power modes supported by airbag ECU receivers. A PSI5 Inertial Sensor is a self-contained satellite accelerometer that communicates with the host ECU over the Peripheral Sensor Interface 5 (PSI5) automotive standard, a two-wire current-loop interface widely adopted for airbag front and side satellite crash sensors. Within the broader sensor taxonomy, PSI5 inertial sensors belong to MEMS accelerometers, which fall under the accelerometer, motion sensor, and inertial measurement unit family (accelerometer -> motion sensor -> inertial sensor -> MEMS sensor -> semiconductor). The PSI5 standardized bus allows multiple sensors to share wiring and simplifies airbag restraint system architecture. Key features of the MMA5212KWR2 include a +/-120g full-scale measurement range, low-pass overdamped frequency response optimized for crash pulse capture, integrated PSI5 Manchester/Half-Bit data transmission, on-board self-test capability, and AKLV27 protocol compatibility. The accelerometer's overdamped mechanical transfer function eliminates the need for external low-pass filtering for crash pulse characterization, while integrated EEPROM stores calibration coefficients for sensitivity and offset compensation at production trim. Architecturally, the device integrates a surface-micromachined MEMS proof mass, a sigma-delta front-end, and a PSI5 transceiver with on-chip temperature compensation. The overdamped mechanical response is engineered to have a flat frequency response within the airbag crash-pulse bandwidth, while PSI5 synchronization supports time-multiplexed operation of up to four satellite sensors on a single ECU channel. The MMA5212KWR2 is specified for the automotive temperature grade (-40C to +125C). Typical applications include front and side airbag satellite crash sensors, seatbelt pretensioner sensors, knee airbag occupant detection, and pedestrian protection impact detection units. AEC-Q100 qualification, combined with PSI5 interoperability, makes the part particularly well-suited for distributed airbag architectures where each sensor is positioned remotely from the central ECU and communicates reliably over a single twisted pair. When designing with this device, follow the PSI5 bus wiring topology (twisted pair, daisy-chain or parallel configuration) and observe the ECU receiver synchronization requirements. Proper PCB layout includes a star ground reference, robust power supply decoupling at the device, and routing discipline to keep the PSI5 pair away from high-current switching traces to preserve signal integrity for crash-event measurement. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes that are not aggregated in any single manufacturer datasheet view.
MMA5224AKW - 240g X-Axis PSI5 Inertial Accelerometer | NXP
The NXP MMA5224AKW is a PSI5-protocol X-axis inertial accelerometer with a ±240g full-scale range, housed in a 16-pin QFN (6x6 mm) package. It belongs to the Xtrinsic MMA52xxAKW family of automotive-grade sensors designed for crash detection and chassis control. The device integrates a MEMS sensing element with a SPI-compatible PSI5 (Peripheral Sensor Interface 5) digital interface supporting 10 kHz to 189 kHz baud rates. An accelerometer is a micro-electromechanical (MEMS) sensor that measures proper acceleration along one or more axes, converting mechanical motion into an analog or digital electrical signal. In the automotive electronics hierarchy, an accelerometer is a sub-category of motion sensors (itself a subset of inertial measurement units and sensors), used to detect vehicle dynamics events such as frontal crash, side impact, or rollover. The MMA52xxAKW family specifically targets airbag restraint systems and active chassis systems that demand deterministic, low-latency sensor communication. Key features include a ±240g measurement range, 10 kHz to 189 kHz programmable PSI5 communication baud rate, on-chip signal conditioning, and a self-test capability. The 16-QFN package provides a low-profile footprint suitable for space-constrained ECU modules mounted behind the bumper or under the seat. The sensor operates from a 5V, 9V, 12V, or 15V supply, accommodating typical automotive bus voltages without external regulation. Technically, the MMA5224AKW uses a surface-micromachined MEMS proof mass with capacitive sensing and a sigma-delta conversion chain. Internal calibration compensates for offset and gain over the -40C to +125C automotive temperature range, providing stable bias and sensitivity without host-side correction. The PSI5 protocol guarantees synchronous data sampling and a deterministic latency that is critical for airbag firing decisions. Typical applications include airbag systems (front, side, and rollover detection), electronic stability control, seatbelt pretensioners, suspension control modules, and pedestrian protection impact sensors. Designers choose this part when an automotive safety system requires a certified PSI5 sensor with high-g measurement capability. When designing with the MMA5224AKW, follow NXP's reference layout for the 16-QFN exposed pad - the thermal pad must be soldered to a copper pour for mechanical stability and EMI performance. Verify that the host MCU supports PSI5 v1.3 or v2.1 framing, and respect the synchronization timing window during bus arbitration. This page synthesizes distributor pricing, drop-in alternatives from the same Xtrinsic family, and practical layout guidance not found in the standalone datasheet.
MMA5224AKWR2 - ±240g X-Axis PSI5 Accelerometer | NXP
The NXP Semiconductors MMA5224AKWR2 is a Xtrinsic MMA52xxAKW PSI5 (Peripheral Sensor Interface 5) inertial sensor designed for single-axis X-direction acceleration measurement, housed in a 16-pin QFN (6x6 mm) package. The device measures ±240 g full-scale range, operates from a 4.2 V to 17 V supply, and is targeted at airbag deployment and chassis control applications in automotive safety systems. An accelerometer is a micro-electromechanical systems (MEMS) sensor that converts linear acceleration into an analog or digital electrical signal. In the broader sensor hierarchy, the MMA5224AKWR2 belongs to the high-g inertial sensor family used for crash detection, sitting between low-g motion sensors (used for tilt/inclinometer applications) and angular-rate gyroscopes. It is part of the wider power management and sensor ecosystem in modern automotive electronic stability systems. Key differentiating features include ±240 g measurement range optimized for frontal-impact airbag crash sensing, PSI5 v2.0 protocol compatibility for automotive sensor-peripheral interfacing, integrated Manchester/parasitic SPI modes for legacy compatibility, and AEC-Q100 automotive qualification. The device supports a 4.2 V to 17 V unregulated supply voltage rail commonly available from the vehicle's 12 V battery bus. The MMA5224AKWR2 uses a MEMS transducer with a capacitive sensing element and dedicated ASIC signal chain that performs amplification, temperature compensation, and PSI5 frame encoding on-chip. The internal oscillator and Manchester decoder allow direct connection to an airbag control unit (ACU) over a two-wire PSI5 bus, reducing wiring harness complexity. The 16-QFN package provides a small board footprint with excellent thermal dissipation for under-hood mounting. Typical applications include front airbag crash sensors, side-impact pressure/event sensors, seatbelt pretensioner sensors, and chassis control rollover detection. The wide operating temperature range and AEC-Q100 qualification suit it also under the hood and within safety-critical restraint systems. When designing with this part, engineers should follow NXP's PSI5 bus termination and synchronization timing guidelines to maintain EMC compliance. Power decoupling and reverse-polarity protection at the supply input are also recommended per the datasheet application circuit. This page synthesizes distributor pricing, pin-compatible MMA52xx family alternatives, and practical design notes not found in the manufacturer datasheet alone.
MMA5224KW - ±240g X-Axis PSI5 Satellite Accelerometer | NXP
The NXP MMA5224KW is an overdamped X-axis satellite accelerometer from the Xtrinsic MMA52xxKW family, supporting AKLV27 and PSI5 Version 1.3 protocols with ±240 g full-scale range, supplied in a 16-pin QFN (HQCCN) 6x6 mm package. It is a SafeAssure solution targeting airbag crash-sensing satellite modules where high-g events must be digitised and reported over the PSI5 current-loop bus to a central airbag ECU. An accelerometer is a micro-electro-mechanical (MEMS) sensor that converts linear acceleration into an analog or digital output proportional to displacement of a proof mass. Within the broader automotive sensor hierarchy, the MMA5224KW sits in the high-g (>100 g) crash-sensor hypernym tier above low-g vehicle dynamics sensors (e.g., electronic stability control) and below gyroscopes, IMUs, and full 6-DOF inertial measurement units. It is an axis-specific (single-axis X) over-damped sensor, a category valued in airbag systems for flat phase response and pulse fidelity during a crash event lasting 5-70 ms. Key features include an integrated PSI5 v1.3 transceiver with 10-bit data length, Manchester coding, and selectable bit rates of 125 kbps or 250 kbps; onboard synchronous sampling; bidirectional communication; and 16 programmable PSI5 addresses. The device operates from a regulated 5 V supply on a low-power Manchester-coded current loop, with a typical standby current well below 1 mA to avoid draining the satellite wiring harness during ignition-off crash sensing. Internally, the MMA52xxKW die uses a hermetically-sealed silicon bulk-micromachined proof mass with capacitive differential readout, sigma-delta conversion, and a digital PSI5 communication block. Over-damped mechanical response is deliberately chosen (versus critically-damped) to avoid ringing artefacts at the airbag ECU's crash-algorithm input, providing cleaner pulse reconstruction than under-damped competitor parts. Typical applications include front, side, and rear impact satellite crash sensors, pedestrian protection satellite modules, and AKLV27 vehicle network peripherals. The 16-QFN (6x6) package carries automotive-grade qualification (AEC-Q100) needed for under-bumper or seat-mounted satellite placement. Designers must route the PSI5 two-wire current loop as a twisted pair back to the ECU, maintain the recommended decoupling network close to VDD, and respect the absolute maximum acceleration rating to avoid latched mechanical damage. This page synthesises XAIPART distributor pricing, drop-in alternative MPNs, and practical PCB implementation notes not found on the single distributor listings.