AIS2IH - 3-Axis Accelerometer, 2g/4g/8g/16g | STMicroelectronics
MPN: AIS2IH ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.5 | $2.50 |
| 10 | $2.25 | $22.50 |
| 100 | $2 | $200.00 |
| 500 | $1.8 | $900.00 |
| 1,000 | $1.6 | $1,600.00 |
Drop-in alternatives for AIS2IH — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LIS2DH12TR
✅ Drop-In✓ 99,999 In Stock
$0.67 / Unit
View Datasheet →AIS2DW12
✅ Drop-In📋 Reference alternative (not in catalog)
LIS2DS12
✅ Drop-In📋 Reference alternative (not in catalog)
AIS2IH Maximum Ratings & Electrical Characteristics
| Full-Scale Range | ±2g, ±4g, ±8g, ±16g |
| Interface | I2C, SPI |
| Supply Voltage | 1.71 V to 3.6 V |
| Current Consumption (Normal Mode) | 180 µA |
| Current Consumption (Power-Down) | 1.6 µA |
| Output Data Rate | 1 Hz to 1000 Hz |
| Noise Density | 90 µg/√Hz |
| Operating Temperature | -40°C to +105°C |
| Package | 12-pin LGA (2x2 mm) |
| Mounting Type | Surface Mount |
| FIFO Buffer | 32-level |
| Temperature Sensor | Integrated |
| Self-Test | Yes |
| RoHS Status | Compliant |
| AEC-Q100 | Qualified |
AIS2IH Pin Configuration
| Pin 1 | VDD — Power supply |
| Pin 2 | GND — Ground |
| Pin 3 | SCL/SPC — I2C clock / SPI clock |
| Pin 4 | SDA/SDI — I2C data / SPI data in |
| Pin 5 | SDO/SA0 — SPI data out / I2C address select |
| Pin 6 | CS — Chip select |
| Pin 7 | INT1 — Interrupt 1 |
| Pin 8 | INT2 — Interrupt 2 |
| Pin 9 | NC — Not connected |
| Pin 10 | NC — Not connected |
| Pin 11 | NC — Not connected |
| Pin 12 | NC — Not connected |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AIS2IH is suitable for 6 applications: Automotive Airbag Systems, Industrial Vibration Monitoring, Tilt Sensing for Leveling Equipment, Electronic Stability Control (ESC), IoT Motion Detection, Wearable Activity Monitoring.
Automotive Airbag Systems
The AIS2IH is used in automotive airbag systems to detect sudden deceleration and trigger airbag deployment. Its wide temperature range (-40°C to +105°C) and AEC-Q100 qualification ensure reliable operation in harsh automotive environments. The accelerometer's high sensitivity and low noise density (90 µg/√Hz) enable accurate crash detection. In a typical airbag system, the AIS2IH is mounted on the vehicle's chassis and continuously monitors acceleration. When a threshold is exceeded, the device generates an interrupt that triggers the airbag control unit. The device's self-test capability allows periodic verification of the sensor's functionality, ensuring system integrity. The low power consumption (180 µA) is not critical in this application, but the device's robustness and long-term stability are essential.
Recommended
Industrial Vibration Monitoring
The AIS2IH is ideal for industrial vibration monitoring, where it detects abnormal vibrations in machinery to predict maintenance needs. Its low noise density (90 µg/√Hz) and wide bandwidth (up to 1000 Hz) allow it to capture high-frequency vibrations. The device's I2C/SPI interface enables easy integration with microcontrollers. In a typical setup, the AIS2IH is mounted on a motor or pump, and its output is analyzed to detect bearing wear or imbalance. The 32-level FIFO buffer helps manage data flow, reducing the host processor's workload. The device's wide operating temperature range (-40°C to +105°C) makes it suitable for industrial environments. The low power consumption is beneficial for battery-powered wireless sensors.
Recommended
Tilt Sensing for Leveling Equipment
The AIS2IH is used in tilt sensing applications, such as leveling equipment and construction tools. Its high resolution and low noise allow precise angle measurements. The device's selectable full-scale range (±2g to ±16g) enables optimization for different tilt angles. In a typical application, the AIS2IH is mounted on a platform, and its output is used to calculate the tilt angle using trigonometric functions. The device's low power consumption (180 µA) is ideal for battery-powered tools. The integrated temperature sensor can be used for temperature compensation, improving accuracy. The device's small package (2x2 mm) allows integration into compact designs.
Recommended
Electronic Stability Control (ESC)
The AIS2IH is used in electronic stability control systems to detect vehicle dynamics and assist in maintaining control. Its high sensitivity and low noise are critical for accurate yaw rate and lateral acceleration measurements. The device's AEC-Q100 qualification ensures reliability in automotive environments. In an ESC system, the AIS2IH is part of an inertial measurement unit that includes a gyroscope. The accelerometer data is fused with gyroscope data to estimate the vehicle's state. The device's wide temperature range (-40°C to +105°C) ensures operation in extreme conditions. The self-test feature allows periodic verification of the sensor's functionality.
Recommended
IoT Motion Detection
The AIS2IH is used in IoT devices for motion detection, such as smart home sensors and wearable devices. Its low power consumption (180 µA in normal mode, 1.6 µA in power-down) is ideal for battery-powered devices. The device's small package (2x2 mm) allows integration into compact designs. In a typical IoT application, the AIS2IH is used to detect motion and wake up the system from sleep mode. The device's programmable interrupt generator can be configured to trigger on motion, free-fall, or 6D orientation changes. The I2C/SPI interface enables easy connection to microcontrollers. The device's wide supply voltage range (1.71V to 3.6V) allows direct connection to common battery voltages.
Recommended
Wearable Activity Monitoring
The AIS2IH is used in wearable devices to monitor physical activity, such as step counting and gesture recognition. Its low power consumption and small size make it ideal for wearables. The device's selectable full-scale range allows optimization for different activity levels. In a typical wearable, the AIS2IH is used to detect steps, which are counted by analyzing the acceleration pattern. The device's FIFO buffer helps reduce power consumption by allowing the microcontroller to sleep while data is collected. The device's wide supply voltage range (1.71V to 3.6V) is compatible with coin cell batteries. The integrated temperature sensor can be used for skin temperature monitoring.
Recommended
Recommended Products Summary
Engineering reference data for AIS2IH — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LIS2DH12 | AIS2DW12 | LIS2DS12 | ADXL345 | BMI160 |
|---|---|---|---|---|---|---|
| Package | 12-pin LGA (2x2 mm) | 12-pin LGA (2x2 mm) - same | 12-pin LGA (2x2 mm) - same | 12-pin LGA (2x2 mm) - same | 14-pin LGA (3x5 mm) - different | 16-pin LGA (2.5x3 mm) - different |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | Analog Devices | Bosch Sensortec |
| Full-Scale Range | ±2g, ±4g, ±8g, ±16g | ±2g, ±4g, ±8g, ±16g | ±2g, ±4g, ±8g, ±16g | ±2g, ±4g, ±8g, ±16g | ±2g, ±4g, ±8g, ±16g | ±2g, ±4g, ±8g, ±16g |
| Supply Voltage | 1.71V to 3.6V | 1.71V to 3.6V | 1.71V to 3.6V | 1.71V to 3.6V | 2.0V to 3.6V | 1.71V to 3.6V |
| Current Consumption (Normal) | 180 µA | 180 µA | 150 µA | 180 µA | 140 µA | 180 µA |
| Noise Density | 90 µg/√Hz | 90 µg/√Hz | 90 µg/√Hz | 90 µg/√Hz | 110 µg/√Hz | 130 µg/√Hz |
| Operating Temperature | -40°C to +105°C | -40°C to +85°C | -40°C to +105°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
| AEC-Q100 | Qualified | Not qualified | Qualified | Not qualified | Not qualified | Not qualified |
Key Differentiators
- Automotive-grade qualification (vs LIS2DH12)
- Wider temperature range (vs ADXL345)
- Lower noise density (vs BMI160)
Design Notes
Place the AIS2IH away from high-frequency switching components and vibration sources to minimize mechanical stress and electrical noise. Use a solid ground plane under the sensor and ensure proper decoupling with a 100 nF capacitor close to the VDD pin. Keep I2C/SPI traces short and avoid routing them near high-current paths.
The AIS2IH is a MEMS sensor that is sensitive to mechanical stress. Avoid placing it near board edges or mounting holes where PCB flexure can occur. Use a soft mounting technique if the sensor is subject to high vibration. Ensure the solder pads are properly sized to avoid stress on the package.
Do not exceed the absolute maximum ratings, including supply voltage of 3.6V. Ensure the I2C/SPI interface lines are properly terminated to avoid signal integrity issues. The self-test feature should be used during production to verify sensor functionality. Also, note that the AIS2IH is not a drop-in replacement for all accelerometers due to package differences.
Compliance Information
AIS2IH is AEC-Q100 qualified and RoHS compliant per STMicroelectronics product page.
