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Alps Alpine Develops Waterproof Digital Sensor Measuring Air and Water Pressure

Low Current Consumption Realized with Dedicated ASIC Tapping In-house Design Know-how

Alps Alpine has started mass-producing the HSPPAD143A Waterproof Digital Pressure Sensor.

The new Waterproof Digital Pressure Sensor from Alps Alpine targets wide-ranging applications in wearable devices and IoT equipment such as flow meters for essential utilities.

Alps AlpineThe newly developed HSPPAD143A has an expanded pressure measurement range of 300 – 2100hPa, compared to 300 – 1100hPa of existing products, and a water-resistant design. This means it works 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) based on IC design know-how accumulated internally over the years at Alps Alpine. This has helped realize low current consumption of 1.8µA (in Low Power mode), contributing to the creation of products able to operate for lengthy periods.


  1. Broad measurement range from 9,000 meters altitude to 10 meters underwater
  2. 1.8µA low current consumption (in Low Power mode)
  3. Use in combination with O-ring realizes outstanding water resistance with simple mechanical design
  4. High sensing resolution with 17-bit digital data output (2Pa/LSB)
  5. Built-in FIFO memory
  6. Surface mount type

The sensor has built-in FIFO* memory, and it can be used in combination with a ready-made O-ring to simplify 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.

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Niloy Banerjee

A generic movie-buff, passionate and professional with print journalism, serving editorial verticals on Technical and B2B segments, crude rover and writer on business happenings, spare time playing physical and digital forms of games; a love with philosophy is perennial as trying to archive pebbles from the ocean of literature. Lastly, a connoisseur in making and eating palatable cuisines.

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