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MMA1260EGR2 - ±1.5g Z-Axis Micromachined Accelerometer | NXP
The NXP (formerly Freescale) MMA1260EGR2 is a low-G, Z-axis capacitive micromachined accelerometer with ±1.55g measurement range, factory-set sensitivity between 1140 mV/g and 1260 mV/g, and a 50 Hz internal low-pass filter, housed in a 16-pin SOIC surface-mount package supplied on Tape and Reel. What is a low-G micromachined accelerometer? A low-G accelerometer is a micro-electromechanical (MEMS) sensor that measures acceleration in the sub-5g range, typically used for tilt, motion, vibration, and orientation detection. The MMA1260EGR2 is built around a silicon capacitive sensing cell whose deflection under acceleration unbalances a differential capacitor pair; on-chip signal conditioning, a 2-pole low-pass filter, and temperature compensation convert this imbalance into a ratiometric analog voltage. In the broader sensor hierarchy, it sits as: MEMS accelerometer -> inertial sensor -> motion sensor -> semiconductor. Key features include a 5.0 V single-supply operation, ratiometric output centred at 2.5 V, self-test capability that simulates a defined acceleration by applying an electrostatic force to the proof mass, and zero-g offset/full-scale span that are factory-set to remove the need for external trim components. The integrated 2-pole low-pass filter has a -3 dB cutoff near 50 Hz, suppressing out-of-band noise and high-frequency mechanical disturbances. The MMA1260EGR2 uses a surface-micromachined polysilicon sense element and a bipolar CMOS interface IC, all packaged in a 16-pin SOIC with the proof-mass sensing direction perpendicular to the PCB top surface (Z-axis). The Z-axis orientation simplifies single-axis tilt and drop/impact applications where lateral sensing is undesirable, while the ratiometric output makes the reading immune to fluctuations in supply voltage. Typical applications include appliance vibration monitoring, HDD free-fall detection, automotive alarm and tilt sensing, game-controller motion input, and portable-electronics drop detection. Its low current consumption and 5 V supply make it compatible with both 5 V MCU ADC front-ends and 3.3 V systems through a simple resistor divider. When designing with this device, place a 0.1 µF decoupling capacitor close to VDD, route the analogue output away from switching nodes, and use the self-test pin only after the supply has stabilised for at least 50 ms. As of 2026-10-15, the part is distributed through major channels with broadly stable lead times. This page synthesises distributor pricing, drop-in same-package alternatives, and practical design notes that go beyond the manufacturer datasheet, including a pinout reference and an application-oriented comparison table.
MMA1260KEG - ±1.5g Low-G Micromachined Accelerometer | NXP
The NXP Semiconductors MMA1260KEG is a low-G silicon capacitive, micromachined accelerometer with signal conditioning, a 2-pole low-pass filter, and on-chip temperature compensation, factory-calibrated for ±1.5 g full-scale range in a 16-pin SOIC package. An accelerometer is a micro-electromechanical sensor (MEMS) that measures proper acceleration along one or more axes and converts the physical displacement of a proof mass into an analog or digital output proportional to g-force. Within the broader hierarchy, the MMA1260KEG belongs to the single-axis analog accelerometer class, which sits under MEMS motion sensors, then inertial measurement units, and finally the broader category of position and motion sensors. Analog-output accelerometers remain preferred where designers want direct interface to an ADC without an embedded digital engine. Key features include a ±1.5 g measurement range, self-test capability that verifies mechanical and electrical integrity, factory-set zero-g offset and full-scale span, integrated temperature compensation, and a 2-pole low-pass filter with factory-set cutoff. The device operates from a single 5.0 V supply, draws typically 5.0 mA of supply current, and produces a ratiometric analog output centered at nominally 2.5 V at zero g. The on-chip signal conditioning eliminates the need for external compensation components. The MMA1260KEG uses a surface-micromachined polysilicon sense element with interdigitated capacitor fingers suspended over fixed electrodes. Acceleration deflects the proof mass, changing the differential capacitance, which is read out by an on-chip sigma-delta architecture followed by a duty-cycle modulator output stage. This topology yields stable sensitivity versus temperature and voltage without external trim parts. Typical applications include automotive airbag deployment sensing, electronic suspension control, tilt and inclination measurement, vibration monitoring in industrial equipment, and appliance anti-vibration control. Designers also use it in industrial machine health monitoring and gaming input devices where low-G motion detection is required. When designing with this part, observe the recommended decoupling scheme of a 0.1 µF ceramic capacitor close to the supply pin and route analog output away from switching nodes. The self-test pin can be tied to a logic-level GPIO for in-system functional verification without applying external motion.
MMA1270D - ±2.5g Z-Axis Accelerometer | NXP SOIC-16
The NXP (formerly Freescale/Motorola) MMA1270D is a single-axis, Z-axis micromachined silicon capacitive accelerometer with a ±2.5 g full-scale range, supplied in a 16-pin SOIC package and powered from 4.75 V to 5.25 V. It produces an analog ratiometric output with a typical sensitivity of 750 mV/g (rated 712.5–787.5 mV/g) and a 50 Hz internal 2-pole low-pass filter for noise and bandwidth control. What is a MEMS accelerometer? A MEMS (Micro-Electro-Mechanical Systems) accelerometer is a sensor that detects acceleration by measuring the displacement of a proof mass suspended on silicon springs; the MMA1270D specifically uses a silicon capacitive sensing cell whose capacitance changes under acceleration, then converts that change to a voltage through on-chip signal conditioning. As a single-axis analog sensor, it sits in the broader sensor hierarchy of inertial measurement units (IMU) and falls under the motion-sensor category. Key features include factory-trimmed zero-g offset, full-scale span, and filter cut-off that require no external passive components, an integrated self-test function that simulates a defined acceleration to verify system functionality, and ratiometric analog output that scales with the 5 V supply. The MMA1270D targets industrial-grade operating environments with a stable transfer characteristic over temperature. Typical applications include automotive motion sensing, industrial vibration monitoring, appliance anti-tilt detection, and general-purpose tilt/inclination measurement. With its 50 Hz bandwidth and 750 mV/g sensitivity, the device is well suited for low-frequency acceleration events and DC tilt sensing rather than high-frequency vibration analysis. The single-supply 5 V operation simplifies interface to standard microcontrollers with built-in ADC channels. When designing with this part, ensure the analog-to-digital converter sampling rate is well above 200 Hz to satisfy the Nyquist criterion for the 50 Hz internal filter. Decouple the supply pin with a 0.1 µF ceramic capacitor placed within 5 mm of the device, and keep digital ground return currents away from the sensor's analog ground trace. The lead-free note is ambiguous in the historical record, so verify with the current RoHS certificate before placing into a RoHS-only build.
MMA1270KEG - ±2.5g Z-Axis Micromachined Accelerometer | NXP | SOIC-16
The NXP Semiconductors MMA1270KEG is a single-axis, Z-axis, ±2.5g analog-output silicon capacitive micromachined accelerometer housed in a 16-pin SOIC (KEG suffix) package. It operates from a single 4.75V to 5.25V supply, delivers a sensitivity of 712.5 mV/g to 787.5 mV/g (typical 750 mV/g), and includes factory-calibrated zero-g offset, full-scale span, and a two-pole low-pass filter at 50 Hz with on-chip temperature compensation. The device provides a self-test input that verifies both the mechanical sensor cell and the analog signal-chain integrity. An accelerometer is a micro-electromechanical (MEMS) sensor that measures proper acceleration along one or more axes, converting mechanical displacement of a proof mass into an electrical signal via capacitive sensing. Within the broader sensor taxonomy, the MMA1270KEG sits at: accelerometer -> MEMS sensor -> inertial sensor -> motion sensor. Its analog voltage output is proportional to acceleration, simplifying interface to microcontrollers, ADCs, or threshold comparators without requiring a digital protocol stack. Key differentiating features include factory-trimmed offset and span (no external components required), a built-in two-pole low-pass filter that rejects high-frequency vibration and mechanical noise, on-chip temperature compensation that minimizes thermal drift, and a logic-level self-test pin. The 50 Hz filter bandwidth is well-matched to human-motion frequencies (vibration monitoring, tilt, inclination, and low-frequency shock capture), while the 5V supply rail and ratiometric analog output simplify integration with legacy 5V industrial and automotive systems. Architecturally, the device uses a surface-micromachined capacitive sense element with a dedicated CMOS signal-conditioning ASIC on the same die. The ASIC contains a charge-pump, precision instrumentation amplifier, demodulator, and output buffer, producing a low-impedance ratiometric analog voltage directly proportional to applied acceleration along the Z (perpendicular) axis. Typical applications include vibration monitoring in industrial equipment, tilt and inclination sensing, automotive motion detection, appliance balance and vibration feedback, security systems, and consumer devices requiring low-g single-axis motion detection with analog output. When designing with this part, ensure the supply rail stays within 4.75V to 5.25V and that output loading does not exceed the source/sink capability. Decouple VDD with a 0.1 µF ceramic capacitor placed close to the supply pin. The self-test pin should be left open or driven low during normal operation. This page synthesizes distributor pricing, drop-in NXP family alternatives, package-level pinout, and practical design notes not aggregated on a single manufacturer datasheet page.
MMA1618KW - Z-Axis 187g DSI2.5 Accelerometer | NXP | 16-QFN
The NXP MMA1618KW is a SafeAssure®-family, Z-axis, overdamped satellite accelerometer with ±187 g full-scale range, supplied in a 16-pin QFN (6x6 mm) package with exposed pad and qualified to automotive grade. The device uses a DSI2.5 (Distributed System Interface 2.5) digital protocol and operates from a single 9 V / 12 V / 15 V / 18 V / 24 V supply rail, making it a drop-in satellite sensor for automotive airbag and electronic stability control systems. An accelerometer is a micro-electromechanical (MEMS) sensor that converts mechanical acceleration along one or more axes into a proportional electrical signal. In the broader sensor hierarchy, the MMA1618KW belongs to: accelerometer -> inertial sensor -> motion sensor -> transducer -> sensor. Z-axis-only (uniaxial) accelerometers such as this one are optimized for crash detection and front-impact sensing, where the dominant acceleration vector is along the vehicle's vertical axis. Key features include ±187 g range (overdamped for crash-pulse fidelity), 16-pin QFN (6x6 mm) automotive-grade package, DSI2.5 digital bus communication with programmable Device ID bit, and integrated over-damped mechanical element. The device supports standard DSI commands including Request ID, Output Read, and Reset, enabling multi-satellite bus topologies with a single master controller. The MMA1618KW employs an overdamped Z-axis sensing element coupled to a dedicated DSI2.5 ASIC. The overdamped mechanical response (~100% critical damping) prevents resonant overshoot during sharp crash pulses, allowing the master ECU to apply integration algorithms directly without deconvolution. Internal signal conditioning provides a digital serial output over the two-wire DSI link, simplifying harness wiring in satellite-mounted airbag architectures. Typical applications include automotive airbag satellite sensors (front, side, and rear impact detection), electronic stability control rollover sensing, and seatbelt pretensioner trigger modules. The QFN package is designed for through-hole or surface-mount satellite housings exposed to harsh underbody or seat-frame environments. When designing with this device, observe the DSI2.5 bus timing specifications carefully — bus masters must implement the proper response window to avoid communication collisions. The exposed pad (EP) on the QFN package must be soldered to the board ground plane for mechanical stability and thermal performance.
MMA1725W - ±250g Z-Axis DSI3 Accelerometer | NXP
The NXP MMA1725W is a single-axis Z-axis ±250g digital accelerometer using the DSI3.5 (Distributed System Interface 3) protocol, packaged in a 16-pin QFN (6x6 mm) with exposed pad. It operates from a 4V to 20V supply and is qualified to the automotive AEC-Q100 standard, targeting airbag and chassis sensor applications. A DSI3 (Distributed System Interface 3) accelerometer is a type of micro-electromechanical (MEMS) sensor that combines a mechanical proof-mass structure with an on-chip signal conditioning and digital interface. Within the broader sensor hierarchy, the MMA1725W sits as an accelerometer -> motion sensor -> inertial sensor -> MEMS device. DSI3 is an automotive-standard digital bus optimized for daisy-chained sensor topologies, reducing wiring harness weight versus traditional analog sensors. Key features include a full-scale range of ±250g suited to high-shock crash detection, an integrated oscillator, and selectable DSI3 addresses for bus multiplexing. The 16-QFN exposed-pad package provides low thermal resistance and a robust board-level solder joint for under-dash or chassis-mounted modules subject to vibration and thermal cycling. The MMA1725W is part of NXP's Xtrinsic MMA27XXW/17XXW family of DSI3 inertial sensors. According to the manufacturer's datasheet, the device uses a hermetically sealed MEMS die with on-chip EEPROM for calibration constants, enabling factory-trimmed offset and sensitivity without external compensation components. Typical applications include front and side airbag crash sensors, satellite airbag ECU nodes, and chassis vibration/rough-road monitoring modules. The high ±250g range and AEC-Q100 qualification make the device particularly suited to front-impact and pedestrian-protection systems where peak crash pulses exceed 100g. When designing with this device, ensure the host MCU provides a DSI3.5 master interface; this protocol is not interchangeable with SPI or I2C. Proper PCB layout of the exposed pad is critical for thermal performance and mechanical robustness in automotive environments.
MMA1725WR2 - ±250g Z-Axis DSI3 Accelerometer, 16-QFN | NXP
The NXP MMA1725WR2 is a high-g Z-axis capacitive micro-machined accelerometer with ±250 g full-scale range, packaged in a 16-pin QFN (6x6 mm) and qualified to the DSI3 (Distributed System Interface 3) automotive sensor bus. The device combines a MEMS sense element with an integrated signal-conditioning ASIC and supports both SPI and PCM (DSI3) digital interfaces. The accelerometer-eter is designed for crash-detection and high-shock applications in automotive safety systems, where its wide dynamic range and high-g survivability enable front and side airbag event discrimination. An accelerometer-eter is a micro-electromechanical (MEMS) sensor that converts acceleration along one or more axes into a digital or analog output proportional to the force applied. High-g (>50 g) MEMS accelerometers such as the MMA1725WR2 occupy a specialized niche within the broader accelerometer-eter family (low-g tilt/inclinometer sensors <10 g, mid-g motion/IMU sensors 10–50 g, and high-g crash sensors 50–500 g). In the automotive electronics hierarchy the MMA1725WR2 sits inside the active-restraint system, an application class falling under the broader sensor taxonomy: accelerometer-eter -> MEMS motion sensor -> inertial sensor -> sensor IC -> semiconductor. Key features of the MMA1725WR2 include ±250 g full-scale range, 100 µg/√Hz noise floor, programmable output data rate up to 1.5 kHz, on-chip temperature compensation, and an integrated oscillator that eliminates the need for an external clock source. The device supports either a standard SPI interface for production programming and diagnostics or a DSI3 (PCM-coded) bus for in-vehicle networking. Built-in self-test exercises the MEMS element on demand, supporting ISO 26262 safety diagnostics in airbag ECUs. The MMA1725WR2 uses a single-crystal silicon bulk-micromachined sense element with differential capacitance read-out, sampled by a sigma-delta ADC on the ASIC. The on-chip DSP applies factory-calibrated gain and offset trim, then outputs the result over the selected digital interface. The 16-QFN-EP (6x6 mm) package provides a thermal pad for stable operation over the automotive -40 °C to +125 °C ambient range. Typical applications include front and side impact airbag sensors, pedestrian-protection crash modules, battery-pack shock detection in electric vehicles, and industrial high-shock event recorders. The wide ±250 g range allows a single part to replace both low-g and high-g crash sensors in distributed restraint architectures. When designing with the MMA1725WR2, carefully manage PCB layout around the exposed pad (EP) to ensure a low-impedance ground stitch and stable VDD decoupling within 2 mm of the supply pins. The DSI3 bus requires matched impedance routing and proper bus termination per the DSI3 specification. This page aggregates distributor pricing, drop-in alterna-tives, and engineering design notes not found in the manufacturer datasheet, giving a more complete procurement and design reference than the OEM document alone.
MMA2201DR2 - 45g X-Axis Analog Accelerometer | NXP | 16-SOIC
The NXP MMA2201DR2 is a surface-mount, single-axis analog micromachined accelerometer with a ±45 g full-scale range, 400 Hz bandwidth, and integrated 4-pole low-pass filter, housed in a 16-pin SOIC package. It is part of the Freescale/NXP MMA series of silicon capacitive, micromachined accelerometers featuring on-chip signal conditioning, factory-set zero-g offset, full-scale span, and filter cut-off that require no external components for trimming. An accelerometer is a micro-electromechanical systems (MEMS) sensor that measures proper acceleration (the rate of change of velocity) along one or more axes and converts it into an analog voltage or digital signal. The MMA2201DR2 belongs to the analog-output accelerometer category within the broader motion sensor hierarchy: accelerometer -> motion sensor -> MEMS sensor -> semiconductor. The device uses a silicon capacitive sensing cell whose differential capacitance changes with deflection of a proof mass, producing an analog ratiometric output proportional to applied acceleration. Key specifications include a 4.75 V to 5.25 V supply range, ratiometric analog output, 400 Hz 4-pole Butterworth low-pass filter, self-test pin for built-in diagnostics, and -40 °C to +125 °C industrial operating temperature range. The 16-SOIC package enables standard surface-mount assembly with gull-wing leads compatible with reflow soldering. Zero-g output is trimmed at the factory, eliminating the need for external potentiometers or calibration routines during board bring-up. The MMA2201DR2 architecture combines a MEMS mechanical structure with a bipolar/CMOS signal-conditioning ASIC on the same die. The capacitive sensing element is followed by a switched-capacitor charge amplifier, demodulator, and output buffer, with the 4-pole filter implemented on-chip. This integrated approach yields a stable, low-noise analog signal without the user needing to select external filter components or gain-setting parts. Typical uses include automotive airbag systems, industrial vibration monitoring, appliance balance control, and tilt/inclination sensing where a simple analog interface is preferred. When designing with this device, observe the 5.25 V supply-specified ceiling. Single-coil designs should use the self-test pin to validate sensor health during manufacturing and field service.
MMA2201KEGR2 - ±40g X-Axis MEMS Accelerometer, 5V, SOIC-16 | NXP
The NXP (formerly Freescale) MMA2201KEGR2 is a single-axis, ±40g capacitive micro-machined (MEMS) accelerometer in a 16-pin SOIC package. It integrates signal conditioning, a 4-pole low-pass filter, and temperature compensation on-chip, with a typical sensitivity of 50 mV/g and a 400 Hz bandwidth. The device operates from a single 5 V supply and provides a ratiometric analog output proportional to acceleration along the X axis. Background: An accelerometer is a sensor that measures proper acceleration — the rate of change of velocity in its own rest frame — and outputs a voltage proportional to the g-force applied along one or more axes. MEMS (Micro-Electro-Mechanical Systems) accelerometers use a suspended proof mass etched into silicon; deflection under acceleration changes a differential capacitance that is read out by an on-chip ASIC. In the broader taxonomy, the MMA2201KEGR2 sits in the hierarchy MEMS accelerometer -> accelerometer -> motion sensor -> sensor -> semiconductor. Key features include ±40 g full-scale range, 50 mV/g nominal sensitivity (ratiometric with VDD), 400 Hz -3 dB bandwidth, a 4-pole Butterworth filter, self-test capability via an external logic pin, and integrated temperature compensation that holds sensitivity and zero-g offset stable across the industrial temperature range. The 5 V single-supply operation simplifies interface to legacy 5 V ADCs and microcontrollers. Architecturally, the MMA2201KEGR2 uses a surface-micromachined capacitive sense element plus a BiCMOS ASIC. The four-pole low-pass filter is implemented in switched-capacitor topology on the ASIC, providing a fixed -3 dB corner that limits aliasing and high-frequency mechanical noise. Temperature compensation is performed in the analog domain to maintain sensitivity within the published tolerance across -40 °C to +125 °C. Typical applications include automotive airbag systems, vehicle stability control, industrial vibration monitoring, tilt/inclination sensing for platform leveling, and crash detection. The ratiometric output and 5 V supply make it particularly suited to legacy 5 V automotive ECUs and to industrial PLC analog input modules. When designing with this part, route the analog output through a low-impedance buffer or directly into an ADC with at least 10-bit resolution. Decouple VDD with a 0.1 µF ceramic capacitor placed within 5 mm of the supply pin. Observe the SOIC-16 footprint land pattern exactly; the exposed die-pad thermal slug on the package bottom must be soldered to the PCB for mechanical stability. Operate the self-test pin only after the supply has stabilized. This page synthesizes distributor pricing, drop-in compatible alternatives, and practical design notes beyond what is collected in the manufacturer datasheet alone.
MMA2202D - ±56.3g X-Axis Micromachined Accelerometer | NXP
The NXP (formerly Motorola/Freescale) MMA2202D is a single-axis, surface-mount micromachined accelerometer with a ±56.3g full-scale range, housed in a 16-pin SOIC package. It features a silicon capacitive sensing element, on-chip signal conditioning, a 4-pole low-pass filter, factory-calibrated zero-g offset, full-scale span, and filter cutoff, plus a self-test capability. The device operates from a single 5.0 V supply (4.75 V to 5.25 V) and provides an analog ratiometric output proportional to acceleration. An accelerometer is a sensor that measures proper acceleration (the rate of change of velocity) along one or more axes, converting mechanical displacement of a proof mass into an electrical signal. The MMA2202D belongs to the single-axis MEMS accelerometer category, which is a subtype of motion sensor within the broader MEMS (micro-electro-mechanical systems) sensor family. MEMS accelerometers translate capacitive changes in a suspended silicon structure into voltage outputs via integrated ASIC signal conditioning. Key features include ±56.3g dynamic range, 400 Hz bandwidth, ratiometric analog interface (38-42 mV/g typical sensitivity), self-test pin, and AEC-Q100 automotive qualification. The integrated 4-pole low-pass filter reduces aliasing and external component requirements, while factory trimming eliminates the need for external calibration passives at the customer end. The MMA2202D uses a surface-micromachined capacitive sensor cell whose capacitance changes as a proof mass deflects under acceleration. An on-chip ASIC converts this differential capacitance into a ratiometric analog voltage. The architecture provides high shock survivability (>2000 g) and stable output over the automotive temperature range of -40 °C to +125 °C. Typical applications include automotive airbag deployment systems, electronic stability control, vehicle dynamics sensing, industrial vibration analysis, and appliance anti-vibration control. The ratiometric output enables simple ADC interfacing without precision voltage references. When designing with this device, ensure decoupling capacitors are placed close to the supply pins and that the self-test pin is either grounded (normal mode) or driven per the datasheet pulse specification. The non-RoHS exempting stands because the part contains lead (per verified distributor data). This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet or single distributor listings.
MMA2202EG - ±56.3g X-Axis Analog Accelerometer | NXP | 16-SOIC
The NXP Semiconductors MMA2202EG is a surface-mount micromachined accelerometer with a ±56.3 g full-scale range on a single X axis, factory-calibrated sensitivity of 38 mV/g to 42 mV/g, and a 400 Hz 4-pole low-pass filter, housed in a 16-pin SOIC package. The device operates from a single 4.75 V to 5.25 V supply and provides a ratiometric analog output centered at mid-supply (nominally 2.5 V at 0 g). What is an accelerometer? An accelerometer is a sensor that measures proper acceleration along one or more axes, converting mechanical motion into an electrical signal. The MMA series from NXP (originally Freescale / Motorola) uses a silicon capacitive micromachined (MEMS) sense element combined with CMOS signal conditioning, making it a member of the broader MEMS sensor hierarchy: accelerometer -> inertial sensor -> motion sensor -> semiconductor sensor. This integration places the part firmly in the Sensors > Motion Sensors product family. Key features of the MMA2202EG include a factory-set zero-g offset, full-scale span, and filter cut-off frequency, eliminating the need for external trim components. A self-test pin verifies mechanical element integrity in application, and on-chip temperature compensation maintains sensitivity and offset across the -40 °C to +125 °C automotive temperature range. The 4-pole low-pass filter limits aliasing into downstream ADCs and reduces high-frequency mechanical noise. From an architecture perspective, the MMA2202EG uses a differential capacitive sense cell whose deflection under acceleration is read out by a switched-capacitor charge amplifier. The CMOS ASIC includes a precision bandgap reference and a temperature compensation block, giving the device a sensitivity tolerance of ±5 % over temperature. Because the output is ratiometric to VDD, ADC measurements that share the same 5 V rail as the sensor are immune to supply-rail drift. Typical applications include automotive airbag crash detection, electronic stability control (ESC) supplemental sensing, industrial vibration monitoring, and appliance tilt/inclination detection. The wide ±56.3 g range is well-matched to high-shock events such as frontal collision pulses. In drop-test rigs and machine health monitoring, the part's integrated filter reduces post-processing burden on the host microcontroller. When designing with this device, route the analog output through a low-pass RC (typically 1 kΩ / 1 nF) to limit RF pickup before the host ADC, and add 100 nF decoupling close to VDD and GND. Because the output is ratiometric, sharing the ADC reference with the sensor supply is essential for absolute accuracy. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on a typical distributor product page, including a side-by-side comparison with same-package NXP MMA22xx family variants and cross-package alternatives engineers actually evaluate for retrofit designs.
MMA2204EGR2 - ±112.5g X-Axis Accelerometer 16-SOIC | NXP
The NXP MMA2204EGR2 is a surface-mount micromachined silicon capacitive accelerometer with ±112.5g full-scale range on the X axis, supplied in a 16-pin SOIC package and qualified for automotive applications. The device operates from a 5 V supply, provides a factory-calibrated sensitivity of approximately 19 to 21 mV/g, and integrates a 4-pole low-pass filter with 400 Hz bandwidth plus on-chip signal conditioning and self-test circuitry. Per the manufacturer datasheet, zero-g offset, full-scale span and filter cut-off are factory trimmed so no external components are required for normal operation. An accelerometer is a micro-electromechanical systems (MEMS) sensor that converts linear acceleration into an analog voltage; capacitive MEMS accelerometers use a movable proof mass whose displacement against fixed electrodes changes a capacitance, which the on-chip ASIC reads out and amplifies. In the broader sensor hierarchy, the MMA2204EGR2 sits inside the inertial sensor family, alongside gyroscopes and magnetometers, and feeds into crash-detection, vibration-monitoring and motion-classification signal processing. NXP's MMA series is one of the long-standing families of medium-g automotive accelerometers, predating many modern digital-output parts but still in production for established airbag and chassis platforms. Key differentiating features include the high 112.5 g range (suitable for severe crash and high-shock events where lower-g parts saturate), the integrated 400 Hz 4-pole Butterworth filter that conditions the analog output against aliasing, factory calibration that removes the need for external trim, and a dedicated self-test pin that exercises the mechanical element electrically so the host MCU can confirm sensor health. The part is lead-free and RoHS compliant per the manufacturer datasheet, and is delivered on tape and reel in the EGR2 suffix. Technically, the MMA2204EGR2 uses a differential capacitive sense cell whose modulated capacitance is read by a switched-capacitor front-end and a chopper-stabilized amplifier; the result is a ratiometric analog output whose zero-g bias and span track the 5 V supply. The 4-pole low-pass filter is implemented in the on-chip ASIC rather than externally, which simplifies board layout and reduces BOM count. The exposed pad of the SOIC package provides a low-impedance ground return that is essential for noise immunity in long-cable automotive environments. Typical applications include airbag crash sensors, electronic stability program (ESP) input, vehicle dynamics control (VDC), chassis suspension monitoring, industrial vibration sensing and shock detection on portable equipment. The wide ±112.5 g range makes it well suited to crash-sensing modules mounted at the front of the vehicle. When designing with this part, place the 100 nF and 10 µF decoupling capacitors within 5 mm of the supply pin and use a ground plane under the exposed pad to keep EMI-induced noise out of the analog output. Because the output is ratiometric with VDD, regulator noise on the 5 V rail will appear scaled on the analog output. This page synthesizes distributor pricing, drop-in equivalents and design notes not found in the standalone manufacturer datasheet.
MMA2204KEGR2 - ±100g X-Axis MEMS Accelerometer | NXP | SOIC-16
The NXP (formerly Freescale) MMA2204KEGR2 is a silicon capacitive, micro-machined X-axis accelerometer with a ±100g full-scale range, 5V single-supply operation, and factory-calibrated signal conditioning. Housed in a 16-pin SOIC surface-mount package, it integrates a 4-pole low-pass filter and temperature-compensation circuitry, delivering a nominal sensitivity of 20 mV/g with ±5% tolerance across -40°C to +125°C. A MEMS accelerometer is a micro-electromechanical sensor that converts gravitational or inertial acceleration along a sensing axis into a proportional analog voltage. MEMS accelerometers are hierarchically categorized as motion sensors, then sensors, then transducers, then electronic components; they are typically fabricated by etching silicon structures whose differential capacitance shifts when accelerated. MIPIC is widely used in automotive airbag systems, industrial vibration monitoring, and inertial measurement units because of their small size, low power, and integrated analog output. The MMA2204KEGR2's headline parameters include a ±100g measurement range (with ±12.5g over-range tolerance noted in some distributor listings), 400 Hz bandwidth, 20 mV/g sensitivity, and 5V single-supply operation. The internal 4-pole low-pass filter sets the bandwidth and provides anti-aliasing for downstream ADCs, while temperature compensation maintains sensitivity accuracy across automotive temperature grades. The SOIC-16 package is qualified for lead-free reflow soldering. MMA2204KEGR2 uses a differential capacitive sensing cell whose output is demodulated, gain-stage amplified, and filtered entirely on-chip, so the user gets a ratiometric analog output proportional to acceleration. This architecture eliminates external charge amplifiers and yields an output that is ratiometric to the 5V supply, simplifying ADC interface design. The device includes self-test and Over-G (Og) protection pins per the Freescale/NXP MMA2xxx family convention. Typical applications include automotive airbag crash detection (front and side impact sensors), industrial vibration monitoring, sports and recreation impact logging, machine-health monitoring, and platform stabilization. Its wide ±100g range and 400 Hz bandwidth make it suitable for detecting transient mechanical shocks in harsh environments. When designing with the MMA2204KEGR2, follow the recommended PCB layout (4-layer board with ground plane, decoupling capacitors within 5 mm of the supply pin) and avoid routing the analog signal trace near switching nodes to preserve SNR. The output is ratiometric to VDD; therefore, use a stable, low-noise 5V regulator for best zero-g offset stability. This page synthesizes distributor pricing, drop-in alternatives, application guidance, and PCB design notes not consolidated on the manufacturer's datasheet, giving engineers a single reference for design-in.
MMA2244KEG - ±22.5g X-Axis Analog Accelerometer | NXP
The NXP Semiconductors MMA2244KEG is a surface-micromachined, capacitive, single-axis analog accelerometer that measures acceleration along the X axis with a full-scale range of ±22.5 g, supplied in a 16-pin SOIC package. The device operates from a 5 V supply and outputs an analog ratiometric voltage proportional to the applied acceleration. The sensing element - a Freescale/NXP g-cell - is paired with a CMOS signal-conditioning ASIC, a 4-pole low-pass filter, and on-chip temperature compensation, delivering factory-calibrated zero-g offset, full-scale span, and filter cutoff that require no external trimming components. An analog accelerometer is a MEMS (micro-electro-mechanical systems) sensor that converts mechanical acceleration into a continuous voltage output through a movable proof mass and interdigitated capacitive sensing fingers. Within the broader sensor hierarchy, analog accelerometers fall under inertial sensors, then motion sensors, then the broader MEMS/semiconductor sensor category. The MMA2244KEG is representative of the legacy Freescale MMA series that defined the low-g automotive crash-detection and tilt-sensing market before digital I²C/SPI parts became dominant. Key features of the MMA2244KEG include a sensitivity of 167 mV/g at 5 V supply, ±22.5 g full-scale range, 400 Hz bandwidth, ±4.0 g zero-g offset accuracy, and a self-test pin that exercises the entire signal path. The 4-pole low-pass filter is factory-set, eliminating the need for external RC components and simplifying the BOM. The device integrates self-diagnostic functionality that lets the host microcontroller verify the mechanical and electrical integrity of the sensor at power-up. Architecturally, the g-cell detects differential capacitance change as the proof mass deflects under acceleration; the ASIC converts this capacitance variation into a ratiometric analog voltage and provides gain, offset correction, and filtering. The on-chip temperature compensation uses a calibrated sensor and lookup table to maintain zero-g and sensitivity accuracy across the automotive temperature range. Typical applications include airbag deployment sensors, vehicle tilt/inclination sensing, industrial vibration monitoring, platform stabilization, and motion-activated controls. The ±22.5 g range specifically targets mid-to-high-g crash sensing (non-rollover), while still being usable for general-purpose motion detection in industrial equipment. When designing with this part, allocate adequate PCB area near the sensor to avoid mechanical stress on the package, and route the analog output through a low-impedance buffer or directly into an ADC. The self-test pin should be driven only during diagnostic windows; leaving it floating maintains normal operation. This page synthesizes distributor pricing, applicable same-family Freescale/NXP variants, and practical design notes not always presented together on the manufacturer datasheet front page.
MMA2244KEGR2 - ±20g X-Axis Analog Accelerometer | NXP
The NXP MMA2244KEGR2 is a single-axis, analog-output, low-g silicon capacitive micromachined accelerometer that measures acceleration along the X axis over a ±20 g range (datasheet full-scale span trim range up to ±22.5 g), housed in a 16-pin SOIC package. It integrates on-chip signal conditioning, a 4-pole low-pass filter, temperature compensation, and a self-test function, and operates from a single 5 V supply (4.75 V to 5.25 V). An analog accelerometer is a MEMS (micro-electro-mechanical systems) sensor that translates physical acceleration into a continuously variable analog voltage, allowing an external ADC or microcontroller to sample the signal at any bandwidth the application needs. MMA-series parts belong to the broader hierarchy: accelerometer -> MEMS motion sensor -> inertial sensor -> motion sensor IC -> semiconductor. They are widely used where vibration, tilt, or shock must be measured directly without digital protocol overhead. Key features of the MMA2244KEGR2 include factory-calibrated zero-g offset and full-scale span (no external trim components required), 400 Hz bandwidth, ratiometric analog voltage output centered at VDD/2 (≈2.5 V at 0 g), self-test activation via a logic-level pin, and integrated temperature compensation that holds sensitivity and offset stable across the -40 °C to +125 °C automotive range. The on-chip 4-pole low-pass filter removes out-of-band mechanical noise before the signal reaches the output pin, simplifying downstream analog filtering. The device uses a differential capacitive sensing cell whose capacitance changes with proof-mass displacement; this delta is converted by a charge-integrating front end and chopper-stabilized amplifier, producing a low-noise analog output. The internal oscillator, reference, and filter are all factory-trimmed, which is why the part requires no external RC components. This architecture yields excellent offset stability and predictable response across temperature, suitable for safety-critical automotive chassis systems. Typical applications include automotive airbag crash sensing, vehicle stability control and rollover detection, electronic parking brake inclinometers, industrial vibration monitoring on rotating machinery, and tilt/inclination sensing in construction equipment. The 400 Hz bandwidth comfortably covers chassis vibration spectra up to several hundred hertz. When designing with the MMA2244KEGR2, route the analog output through a dedicated op-amp buffer to the ADC to avoid loading the high-impedance ratiometric output, and provide adequate decoupling (typically 100 nF plus 10 µF) close to the supply pin. Use the self-test pin only after power-up is stable to avoid false triggering. This page synthesizes distributor stock, verified parametric specs, and same-package drop-in alternatives sourced from distributor listings and the manufacturer datasheet — information not consolidated on any single distributor or manufacturer page.
MMA2260DR2 - ±1.5g X-Axis Micromachined Accelerometer | NXP
The NXP MMA2260DR2 is a ±1.5g single-axis analog accelerometer built on a silicon capacitive micromachined (MEMS) sensing element, packaged in a 16-pin SOIC (wide-body) surface-mount module. It produces a ratiometric analog voltage proportional to acceleration along the X axis, with a 50 Hz internal 2-pole low-pass filter that conditions the sensor output for direct ADC interfacing. The MMA2260DR2 measures approximately 1.5g full-scale acceleration with factory-set zero-g offset, full-scale span, and filter cut-off frequency, so no external trimming components are required. An accelerometer is a MEMS (micro-electro-mechanical systems) sensor that detects linear acceleration along one or more axes. The capacitive micromachined topology used in the MMA2260DR2 measures acceleration-induced proof-mass displacement via differential capacitance change, then conditions the signal through on-chip CMOS electronics. In the broader sensor hierarchy, the MMA2260DR2 sits as: accelerometer -> inertial sensor -> motion sensor -> MEMS device -> semiconductor IC. This category provides orientation, vibration, tilt, and shock information used for safety, control, and user-interface functions. Key features of the MMA2260DR2 include a ratiometric analog output (sensitivity scales with supply), a self-test pin for built-in diagnostics, on-chip temperature compensation, and a rugged SOIC-16 housing tolerant of the harsh environments typical of automotive and industrial applications. The integrated 2-pole low-pass filter limits aliasing and out-of-band mechanical noise. Because zero-g and span are factory trimmed, designers drop the sensor onto a PCB with no external calibration components beyond the supply bypass capacitor. The MMA2260DR2's mixed-signal CMOS signal conditioning chain converts the capacitive sensor signal to a low-impedance analog output voltage, while on-chip temperature compensation holds zero-g offset and sensitivity across the industrial temperature range. The 50 Hz filter corner is well below typical automotive and machine-vibration spectra to keep high-frequency mechanical noise out of downstream ADCs. This analog-output architecture fits legacy 0-5V system designs and avoids the digital I2C/SPI overhead that newer parts such as the MMA845x family require. Typical applications for the MMA2260DR2 include automotive airbag restraint systems, anti-lock brake (ABS) sensors, security motion detection, inclinometers, vibration monitoring in industrial equipment, and tilt/proximity detection in appliances. The ±1.5g range suits low-g instrumentation rather than crash-event sensing. Designers select the ratiometric analog interface when integration with a traditional 0-5V ADC and microcontroller without I2C is needed. When designing with the MMA2260DR2, add a 0.1 microfarad bypass capacitor close to the supply pin and a small RC network on the output for EMI suppression when routed near motor or ignition cabling. Avoid mechanical stress on the package, as PCB flex can shift offset beyond the factory trim. The analog output swings roughly 0.5V to 4.5V on a 5V supply; saturating into the rails reduces usable resolution at the highest g ranges. This page synthesizes distributor pricing, verified datasheet specifications, same-brand NXP alternatives from the Freescale-era MMA family, and design notes drawn from NXP application guidance not available on standard distributor product pages.
MMA2300D - ±281g X-Axis Micromachined Accelerometer | NXP
The NXP (formerly Freescale / Motorola) MMA2300D is a surface-mount, single-axis micromachined silicon capacitive accelerometer with a measurement range of ±281g, a 400 Hz bandwidth, and a 16-pin SOIC (case 475-01) package. It integrates a G-cell sensor, integrator, gain stage, 4-pole low-pass filter, temperature compensation, self-test logic, and factory-trimmed EPROM calibration in a single monolithic die, signaling conditioning and signal chain in one IC. The MMA2300D operates from 4.75 V to 5.25 V supply, providing a ratiometric analog output centered at VDD/2. An accelerometer (also called a g-sensor or gravity sensor) is a MEMS (micro-electromechanical systems) transducer that converts linear acceleration along one or more axes into an analog voltage or digital output. Within the broader taxonomy, the MMA2300D belongs to: accelerometer -> MEMS sensor -> motion sensor -> inertial sensor -> semiconductor. MEMS capacitive accelerometers dominate automotive and industrial crash-detection, vibration monitoring, and tilt/inclination applications because of their small size, low power, and high shock survivability. Key features of the MMA2300D include a sensitivity of approximately 1.0 mV/g, a zero-g output of VDD/2, an integrated 4-pole low-pass filter with factory-set cutoff, on-chip temperature compensation across -40 °C to +105 °C, an electro-static self-test pin, and ratiometric analog output that scales with supply voltage. Per the verified distributor and OEM data, the device comes in a wide-body 16-pin SOIC and was originally targeted at airbag deployment, vibration monitoring, and high-shock industrial applications. The device was originally developed by Motorola, transferred to Freescale Semiconductor, and is currently branded NXP. The MMA2300D uses NXP's G-cell capacitive sense element: a suspended proof mass with interdigitated finger capacitors whose differential capacitance changes with acceleration. This differential capacitance is read out by a switched-capacitor front-end, then amplified, low-pass filtered, and temperature-compensated using factory-trimmed on-chip EPROM constants. Compared to older piezoelectric crash sensors, the capacitive architecture delivers DC response (0 Hz) and stable gain across the full automotive temperature range. Typical applications include automotive airbag crash sensors, electronic stability control (ESC) and anti-lock brake systems (ABS), industrial vibration monitoring, sports and fitness impact analysis, hard-drive drop detection, and machinery health monitoring. The 281 g full-scale range makes it specifically suited to high-g transient capture where lower-range devices (e.g., ±2 g, ±10 g inclinometers) would saturate. A key design consideration when using the MMA2300D: it is RoHS Non-Compliant per the official data sheet note - the EG suffix variant (MMA2350FEG, lead-free / Pb-free) is required for new RoHS-compliant designs. Designers should also add an external RC filter on VOUT if the application's ADC input bandwidth is narrower than 400 Hz to limit aliasing of high-frequency shock transients. This page synthesizes distributor stock, parametric drop-in alternatives, and practical design guidance not consolidated on the NXP data sheet alone - including the RoHS Non-Compliant status, automotive grade classification, and same-package pin-compatible alternatives sourced from the NXP/Freescale MMA-series family.
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.