- The HSPPAD143A series digital pressure sensor from Alps Alpine has a waterproof design for barometer and water depth measurement systems. Barometric and water pressure is detected by a MEMS sensor element using a piezoresistive bridge circuit formed on the silicon diaphragm. The sensor element is connected to an Application Specific Integration Circuit (ASIC) for signal conditioning which has 17-bit Analogue to Digital Converter (ADC) and temperature compensation capability. In addition to the ASIC output compensating pressure values, the HSPPAD143A supports averaging and filtering for lower noise, and FIFO function. The I2C interface is prepared for communication.
- The HSPPAD143A has a pressure measurement range from 300hPa to 2100hPa, and has a water-resistant design to work in both low-pressure environments at altitudes up to 9,000 meters and high-pressure conditions down to 10 meters underwater, allowing measurement in both open air and water with a single sensor. The HSPPAD143A also houses a dedicated, fully customized application-specific integrated circuit (ASIC) to realize a current consumption of 1.8μA in low-power mode.
- The sensor has built-in FIFO memory ( First in First out ), and it can be used in combination with a ready-made O-ring to simplify the end-product design. As a result, the sensor can be used for a wide variety of purposes not restricted to wearable products or applications like pressure measurement in gas meters.
Features
- Pressure range: 300hPa to 2100hPa (+9000m in altitude and 10m in depth).
- Supply voltage: 1.7V to 3.6V (typical 1.8V).
- Operating temperature: -40°C to +85°C.
- Package: small LGA package: 3.1mm x 3.1mm x 2.6mm (L x W x H).
- Digital interface: I2C.
- Current consumption: 1.8uA (low power setting).
- Noise RMS: 0.026hPa (high resolution setting).
- Sampling rate: 200Hz max. (continuous mode).
- Lead-free, RoHS instruction, halogen-free conforming.
Applications
- Wearable devices
- IoT equipment
- Flow meters
