| Model: | WPAS09 |
| Detection principle: | MEMS |
| Characteristics: | Absolute pressure measurement, I²C output, low power consumption |
| Standard encapsulation: | 2.0 × 2.5 × 1.2mm³ |
| Output signal: | I²C digital pressure and temperature output |
| Pressure Range: | 0.1～2MPa Absolute Pressure |
| Pressure Reference: | Absolute Pressure |
| Working Temperature: | -40～125℃ |
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Description
The WPAS09 series is a digital pressure sensor designed for portable pressure-measurement and consumer applications. It combines a MEMS silicon piezoresistive pressure sensor core with a digital compensation signal-conditioning circuit and a 24-bit ΔΣ ADC.
The sensor uses an 8-pin LGA metal-cap package and is internally potted for waterproofing. Factory calibration coefficients stored in non-volatile memory are used to compensate pressure, temperature, zero point, sensitivity and linearity. The I²C interface allows direct integration with an MCU.
Application
- Handheld air pump pressure detection
- Manual pressure gauges
- Portable tire pressure monitoring systems
- Engine pressure control systems
- Pneumatic pressure monitoring systems
- Air compressors
- Home appliances
- Battery-powered pressure instruments
- Portable pressure measurement devices
Features
- Digital absolute pressure measurement
- MEMS silicon piezoresistive sensing
- High-resolution 24-bit ADC
- I²C digital interface
- Ultra-low power consumption
- Low standby current
- Factory-calibrated compensation
- Integrated temperature measurement
- Internal waterproof potting
- Compact 8-pin LGA package
- Metal cap package
- Suitable for battery-powered portable devices
- Selectable oversampling rates
- Optional IIR filtering
- RoHS compliant
- Halogen-free
Specifications
| Measuring Range | 0.1～2MPa, Absolute Pressure, as stated on the characteristic page |
| Operating Pressure Range | 100～2000hPa, as stated in the technical datasheet |
| Supply Voltage | 1.8～3.6V |
| Operating Current | Typical 5.4μA at 1Hz data output rate and minimum oversampling rate |
| Peak Current During Pressure Measurement | Typical 760μA |
| Current During Temperature Measurement | Typical 541μA |
| Standby Current | Typical 0.1μA; Max 0.3μA at 25℃ |
| General Accuracy | ±1%FS at 100～2000hPa and 0～60℃ |
| Absolute Accuracy | Typical ±6.8kPa at 0.1～2MPa and 0～60℃, as stated on the characteristic page |
| Temperature Absolute Accuracy | ±0.5℃ at 25℃; ±1.0℃ from 0～60℃ |
| Long-term Stability | TBD over 12 months |
| Reflow Soldering Drift | -0.5～+1Pa |
| Sampling Rate | Min 157Hz; Typical 182Hz; Max TBD |
| Operating Temperature | -40～125℃ |
| Compensation Temperature | 0～60℃ |
| Storage Temperature | -40～150℃ |
| Maximum Overpressure | 3mPa, as printed in the absolute maximum rating table |
| ESD Level | ±2kV, Human Body Model |
| Digital Interface | I²C, standard and fast modes |
| I²C Address | 7-bit address 0x78 |
| ADC | 24-bit ΔΣ ADC |
| Package | 8-pin LGA, metal cap |
| Package Size | 2.0 × 2.5 × 1.2mm³ |
| Protection | Internally potted for waterproofing |
| Compliance | RoHS compliant, halogen-free |
* 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.
