Description
The WPAS08 series pressure sensors are digital high-precision barometers and altimeters designed specifically for consumer applications. They are based on a MEMS silicon piezoresistive pressure sensor core and a high-resolution 24-bit ΔΣADC.
The WPAS08 series features a low-voltage, ultra-low-power design, making it suitable for battery-powered portable devices such as smartphones, smartwatches, tablets, GPS navigation devices, and outdoor equipment.
The sensor has a package size of 2.0*2.5*1.0 mm³ and uses an 8-pin LGA metal cap package. It can detect height changes of 10 cm and has extremely low temperature coefficient of zero (TCO) and temperature coefficient of sensitivity (TCS). The I2C digital interface output allows for easy integration with MCUs.
Application
- Indoor navigation, 3D outdoor navigation (e.g., navigation systems)
- Weather forecasting (e.g., home weather stations)
- Health and medical (e.g., portable medical devices)
- Vertical speed indication (ascent and descent speeds)
- Leisure and sports (e.g., smartphones, tablets, sports watches, model airplanes)
Features
- Measuring range: 300 hPa~1100 hPa
- Package: 8-pin LGA, metal cap
- Package size: 2.0*2.5*1.0 mm³
- Relative accuracy: 0.03 hPa, equivalent to ±0.25m (900~1100hPa@25~40°C)
- Absolute accuracy: Typical ±1.0 hPa (300~1100hPa, 0~60°C)
- Zero-point temperature coefficient: ±0.3 Pa/K, equivalent to ±2.5 cm/K (0~60°C @ 200 hPa)
- Sensitivity temperature coefficient: ±0.5 Pa/K, equivalent to ±4.2 cm/K (0~60°C @ 1000 hPa)
- Digital interface: I²C
- Current: 5.4μA @1Hz sampling rate
- Operating temperature range: -40~125°C
- RoHS compliant, halogen-free
Specifications
| Technical Datasheet | ||||||
| Parameters Symbolic Conditions | Min. value | Typical value | Max. value | Unit | ||
| Working Temperature Range | TA | OperatingTemperature | -40 | 25 | 125 | °C |
| Compensation Temperature | 0 | 60 | ||||
| Operating pressure range | P | 300 | 1100 | hPa | ||
| Supply voltage | VDD | 1.8 | 3.6 | V | ||
| Operating current | IDD,LP | 1 Hz data output rate, minimum pressure and temperature oversampling rate | 5.4 | uA | ||
| Peak temperature | Ipeak | During pressure Measurement | 760 | uA | ||
| Current during Temperature Measurement | IDDT | 541 | uA | |||
| StandbyCurrent | IDDSL | 25℃ | 0.1 | 0.3 | uA | |
| RelativeAccuracy | Arel | 900~1100 hPa @25 ~40°C | ±0.03 | hPa | ||
| ±0.25 | m | |||||
| Zero-pointTemperatureCoefficient | TCO | 200 hPa @25 ~40°C | ±0.3 | Pa/K | ||
| ±2.5 | cm/K | |||||
| AbsolutePressureAccuracy | Aabs | 300~1100 hPa @0~60°C | ±1 | hPa | ||
| Resolution (O4 Ultra-High Resolution Mode) | Pressure | 0.095 | Pa | |||
| Temperature | 0.01 | °C | ||||
| PressureNoise | VP,full | Full bandwidth, O4 ultra-high resolution mode | 1.0 | Pa | ||
| 8.3 | cm | |||||
| P,filtered | Minimum bandwidth, O4 ultra-high resolution mode | 0.2 | Pa | |||
| 1.7 | cm | |||||
| Temperature AbsoluteAccuracy | AT | @25°C | ±0.5 | °C | ||
| 0~60°C | ±1.0 | °C | ||||
| PowerSupplyRejection Ratio | PSSR | FullVoltage (VDD)Range | ±0.005 | Pa/mV | ||
| Long-term Stability | ΔPstab | 12 months | ±1 | hPa | ||
| Reflow Soldering Drift | -0.5 | +1 | Pa | |||
| Sampling Rate | Fsample | 157 | 182 | TBD | Hz | |
* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.
Technical Support:
Customized technical design and function, LOGO and package are available without extra charge (including molding fee) for mass volume.
The sensors don't have sleeping mode. It can be set in program if needed.
All Winsen products go through strict inspections and tests to make sure they are 100% qualified before shipping out.
The sensor has been fully tested (not calibrated) before leaving the factory, but the module will be calibrated before leaving the factory.
However, after transportation and storage, the environment conditions change, and the surface of the sensor absorbs moisture, mixed gas, pollution matters, etc. It is recommended that customers perform aging and calibration after sensors become stable according to the program and use occasions of the whole device.
15﹪-90﹪RH without condensation,greater or less than this range or long-term high temperature and high humidity will affect the life of the sensor.
Our sensors are certified with CE, 3C, ROHS, anti-explosion, fire prevention, and coal mining safety according to different applications. And we provide assistance for new certification.
Many factors can cause the sensor to fail such as broken wires in transportation, poisoning, falling off of the sensitive material, damage to the heating wire (device), etc. Please find specific cause in each category with Winsen’s aftersales.
Winsen provides professional consultation and service before and after sales. We will recommend the best fitting sensor for your demand. If you have any problem, don’t hesitate to email us to sales@winsensor.com
Due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. But we will reply to your inquiry in 24 business hours.
