Part Number: LIS344ALHTR

Manufacturer: STMicroelectronics


Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of LIS344ALHTR

Datasheet  LIS344ALHTR datasheet
Category Sensors, Transducers
Family Motion Sensors – Accelerometers
Manufacturer STMicroelectronics
Packaging Tape & Reel (TR)
Part Status Active
Type Analog
Axis X, Y, Z
Acceleration Range ±2g, 6g
Sensitivity (LSB/g)
Sensitivity (mV/g) 660 (±2g) ~ 220 (±6g)
Bandwidth 1.8kHz
Output Type Analog Voltage
Voltage – Supply 2.4 V ~ 3.6 V
Features Adjustable Bandwidth, Selectable Scale
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package / Case 16-LFLGA
Supplier Device Package 16-LGA (4×4)

LIS344ALHTR Introduction

Introducing the LIS344ALH: Unleash the Power of Motion Sensing!

Get ready to experience a revolutionary leap in consumer technology with the LIS344ALH, an ultra-compact and low-power three-axis linear accelerometer. This extraordinary device boasts a cutting-edge sensing element and an IC interface that work in perfect harmony to deliver unparalleled performance and reliability.

Crafted using a dedicated process developed by ST, a renowned leader in silicon-based inertial sensors, the LIS344ALH’s sensing element is capable of detecting acceleration with remarkable precision. Meanwhile, the IC interface, manufactured using ST’s proprietary CMOS process, ensures seamless communication between the sensing element and the outside world, providing an impressive analogue signal.

The LIS344ALH takes customization to the next level with its dynamically user-selectable full-scale of 2 g or 6 g. No matter the intensity of motion you seek to measure, this exceptional accelerometer has got you covered. With a maximum bandwidth of 1.8 kHz for all axes, you can capture accelerations in real-time, unleashing a world of possibilities.

But that’s not all. The LIS344ALH offers flexibility like no other, allowing you to fine-tune the device’s bandwidth by incorporating external capacitances. Plus, with its self-test capability, you can effortlessly verify the system’s functionality and ensure optimal performance.

Designed with convenience in mind, the LIS344ALH comes in a Land Grid Array package (LGA), manufactured exclusively by ST. This package guarantees exceptional durability and reliability, even in challenging environments. Operating flawlessly across an extended temperature range of -40 °C to +85 °C, the LIS344ALH is ready to tackle any adventure you embark upon.

Get ready to embrace a new era of motion sensing technology with the LIS344ALH. Whether you’re a tech enthusiast, a developer, or an everyday consumer, this extraordinary accelerometer will unlock a world of possibilities and elevate your experience to new heights. Let your imagination soar as you harness the power of motion with the LIS344ALH!

LIS344ALHTR Features

  • single supply operating between 2.4 and 3.6 volts.
  • user-selectable full-scale of 2 g or 6 g.
  • little electricity usage.
  • Device offset and sensitivity have been factory-trimmed.
  • internal self-test.
  • High shock resistance (10,000 g).

LIS344ALHTR Mechanical characteristics

An accelerometer with mechanical properties suited for a range of applications is the LIS344ALHTR. It is packaged as a small 16LGA (Land Grid Array) surface-mount device, which refers to a device with 16 terminals arranged in a grid. This package offers durability and dependability in many conditions and enables simple integration onto printed circuit boards (PCBs).

Electrical characteristics

The electrical characteristics of the LIS344ALHTR accelerometer are renowned for their dependability and accuracy. Because it uses an analogue interface, it can continuously detect acceleration. The device is compatible with a wide range of power sources often found in electronic systems thanks to its wide voltage supply range, which typically spans 2.16 volts to 3.6 volts.

Absolute maximum ratings

Stresses greater than those stated as “absolute maximum ratings” may harm the equipment permanently. This is merely a stress rating; it does not imply that the gadget will perform properly under these circumstances. Long-term exposure to maximum rating circumstances may have an impact on device reliability.


● Sensing element

A surface-mounted micromachined accelerometer is made using a secret procedure. The technology makes it possible to use constructs made of suspended silicon, which are free to move in the direction of the measured acceleration and are linked to the substrate at a few locations known as anchors. To work with conventional packaging methods, a cap is put on top of the sensor component to prevent the moving elements from getting in the way while the plastic encapsulation is being moulded. The proof mass moves away from its ideal location when an acceleration is applied to the sensor, which leads to an imbalance in the capacitive half-bridge. Utilising charge integration in response to a voltage pulse given to the sense capacitor, this imbalance is determined. The nominal value of the capacitors is just a few pF at steady state, and when acceleration is applied, the capacitive load’s maximum change is in the fF range.

● IC interface

All of the signal processing uses a fully differential structure, but in the last step, the differential signal is turned into a single-ended signal so that it can be used in the outside world. The first stage is a low-noise capacitive amplifier with a related double sampling (CDS) at its output to smooth out the offset and 1/f noise. The signal is then sent to three separate S&Hs, one for each channel, and made available to the outside world. All of the analogue parameters, such as sensitivity and output offset voltage, are related to the voltage source in a ratio. Whether the voltage source goes up or down, the sensitivity and offset will change in a linear way. This trait lets an analogue-to-digital conversion chain get rid of errors caused by the voltage supply.

● Factory calibration

The zero-g level (Voff) and sensitivity (So) of the IC interface are set at the factory. The trimming numbers are kept in the device by a structure that doesn’t change when the power goes out. When the device is turned on, the parameters for trimming are sent to the registers so that they can be used during regular operation. This lets the person use the device without having to calibrate it again.

LIS344ALHTR Application hints

● Soldering information

The LIS344ALHTR accelerometer comes in an LGA package that meets ECOPACK, RoHS, and “Green” standards, which shows that it is good for the environment. According to JEDEC J-STD-020C, the package can stand up to heat from soldering. It is best to leave the “Pin 1 Indicator” disconnected during the wiring process. These guidelines and features make sure that the device meets industry standards and can be safely added to electronic systems while having as little effect on the world as possible.

● Output response vs. orientation

For the LIS344ALHTR accelerometer, the output reaction vs. orientation is an important thing to think about. It is important to calibrate the device and know how sensitive it is along the X, Y, and Z axes for exact measurements. To reduce mistakes, it is important to mount the accelerometer in the way that is suggested. By lining up the sensitive axis with the direction of the acceleration being recorded, you can get more accurate results. To avoid measurement mistakes, cross-axis sensitivity should be measured and kept as low as possible.

Also, other sensors can be used with sensor fusion methods to improve orientation estimation. By using the LIS344ALHTR accelerometer in different ways, you can get the best accuracy and reliability by following these application tips.


In conclusion, the LIS344ALHTR accelerometer from STMicroelectronics is an ultra-compact, low-power three-axis linear accelerometer with user-selectable full-scale ranges, low power usage, and high shock resistance. It gives accurate and reliable measurements, works with a single power source, and is easy to put on PCBs. Accuracy depends on proper calibration and orientation, and sensor fusion methods can help improve the estimation of orientation. The LIS344ALHTR accelerometer is a great choice for many consumer apps that need to measure linear acceleration. Contact ICRFQ to get this powerful sensor and start on a creative and educational trip.

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Kevin Chen