High Accuracy Two-in-one Altitude and Underwater Depth Sensor
STMicroelectronics has introduced the LPS27DEWO, a single MEMS sensor that integrates both altitude and underwater-depth monitoring capabilities. This innovative two-in-one component is designed to monitor depths exceeding 50 meters, offering significant advantages by saving space, simplifying circuitry, and reducing bill-of-materials costs for wearables and various outdoor equipment.
A key differentiator of the LPS27DEWO is its ability to provide two selectable full scales within one compact package. This makes it highly versatile for applications such as sports cameras, smart rings, smartwatches, and other devices used in outdoor and underwater environments. The sensor features an extended underwater pressure range of 6060 hPa, enabling it to deliver accurate information for recreational and enthusiast divers, particularly when ascending from depths below 40 meters, which is critical for decompression safety.
Beyond its depth-sensing capabilities, the LPS27DEWO ensures reliable performance through several design enhancements. It incorporates minimal noise pressure sensing, contributing to its high accuracy of ±0.5% at full-scale. Furthermore, a new black potting gel eliminates light-induced errors, ensuring dependable elevation or depth readings in all environments, even under strong lighting conditions common in wearable applications. The sensor is robust, maintaining functionality when exposed to water pressure at depths up to 110 meters.
Source Link: Press Release
Specifications
| Product | Manufacturer | Function | Package | Footprint | Height | Underwater Depth Range | Accuracy | Digital Interfaces | Operating Current | Price (1k pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| LPS27DEWO | STMicroelectronics | Altitude & Underwater Depth Sensing | 10-lead LGA, Cylindrical Metal Lid | 2.7mm x 2.7mm | 1.7mm | Monitors >50m; Robust up to 110m; Accurate below 40m (6060hPa) | ±0.5% at full-scale | 1.2V I2C, SPI, I3C | 1.7µA at 3.8Pa | $2.18 |
Key Features
- Combines altitude and underwater-depth monitoring over 50 meters in a single MEMS sensor.
- Saves space, simplifies circuitry, and trims bill-of-materials costs.
- Provides two selectable full scales in one compact package.
- Extended underwater pressure range of 6060 hPa for accurate information below 40 meters.
- Remains robust when exposed to water pressure at depths of up to 110 meters.
- Compact 2.7mm x 2.7mm 10-lead LGA footprint with a 1.7mm-high cylindrical metal lid.
- Ensures easy sealing integration and high overpressure resistance.
- Features minimal noise for pressure sensing.
- Achieves high accuracy of ±0.5% at full scale.
- Leverages a new black potting gel to eliminate light-induced error.
- Facilitates electrical design with 1.2V I2C, SPI, and I3C digital interfaces.
- Operates with a very low current of just 1.7µA at 3.8Pa.
Applications
- Wearables
- Outdoor equipment
- Sports cameras
- Smart rings
- Smartwatches
- Recreational and enthusiast diving
Availability
The STMicroelectronics LPS27DEW is a high-accuracy pressure sensor designed to support altitude measurement and underwater depth detection in compact, portable devices, including wearables and sports cameras. Its dual-purpose sensing capabilities make it suitable for applications requiring precise environmental pressure measurements across different operating conditions. Customers, OEMs, and product developers can explore purchasing options and product details through the official STMicroelectronics online store.
