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HP203B Smart Precision Barometer and Altimeter

HP203B Smart Precision Barometer and Altimeter

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The HP203B employs a MEMS pressure sensor with an I2C interface to provide accurate Temperature, Pressure or Altitude data. The sensor Pressure and Temperature outputs are digitized by a high resolution 24-bit ADC. The Altitude value is calculated by a specific patented algorithm according to the pressure and temperature data. Data compensation is integrated internally to save the effort of the external host MCU system. Easy command-based data acquisition interface and programmable interrupt control is available. Typical active supply current is 5.3 uA per measurement-second while the ADC output is filtered and decimated by 256. Pressure output can be resolved with output in fractions of a Pascal, and Altitude can be resolved in 0.01 meter. The HP203B is offered in a 3.8 mm x 3.6 mm x 1.2 mm LGA package and specified for operation from -40°C to 85°C.

DATA SHEET

Features

§           1.8V to 3.6V Supply Voltage
§           Fully Compensated Internally
§           Command-based Reading, Compensated (Optional)
       -          Pressure: 20-bit Measurement (Pascals)
       -          Altitude: 20-bit Measurement (Meters)
       -          Temperature: 20-bit Measurement (°Celsius)
§           Configurable ADC Decimation Rate via Commands
§           Programmable Events and Interrupt Controls
§           Altitude Resolution down to 0.01 meter
§           High-speed I2C Digital Output Interface (Up to 10 MHz)

Application Examples

§           High Accuracy Altimetry
§           Smartphones / Tablets
§           Personal Electronics Altimetry
§           GPS Dead Reckoning
§           GPS Enhancement for Emergency Services
§           Map Assist, Navigation
§           Weather Station Equipment

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