Sensors

Digital pressure sensor operates over 10 - 2000 mBar

12th November 2013
Nat Bowers
0

Measurement Specialties introduce a new low-power digital barometric pressure sensor module. Operating over an extended pressure range of 10 mBar to 2000 mBar, the compact MS5806 measures just 6.4 mm x 4.0 mm x 2.75 mm. Therefore, the MS5806 suits space-constrained devices including high-end thin watches, adventure and multi-mode watches, fitness gadgets, mobile altimeter/barometer systems and bike computers.

With an altitude resolution of up to 20 cm, the MS5806 is ideal for use in altimeters and variometers. Optimising conversion speed and current consumption, the new 24-bit ΔΣ ADC integrated digital pressure sensor features several different operation modes. Converting uncompensated analog output voltage from the Piezo-resistive pressure sensor to a 24-bit value, the MS5806 also provides a a 24-bit value for the temperature of the sensor.

Hermetically-sealed and filled with a silicone gel which protects the sensor and bonding wires, the new MS5806 pressure sensor features a protective cap constructed of an anticorrosive polished stainless steel. Avoiding mechanical stresses on the sensor and offering water-resistance to 100 m, an optional O-ring is placed on the cap’s outer diameter.

Capable of interfacing to almost any MCU, the MS5806 uses six coefficients to compensate for process variations for increased measurement accuracy as well as I²C or SPI communication to offer a conversion time down to 0.6 ms. This new digital barometric pressure sensor module is based on leading MEMS technology and the latest advancements from Measurement Specialties.

Key specifications of the new MS5806 digital barometric pressure sensor include: low power of 0.9 μA (standby <0.15 μA at 25°C); supply voltage range of 1.8 V to 3.6 V; pressure range: 300 mBar to 1100 mBar (Extended: 10 mBar to 2000 mBar); operating temperature range of -40°C to +85°C; ±2.5 mBar typical pressure accuracy (with auto zero at one pressure point); temperature accuracy of ±0.8°C at 25°C; and temperature resolution less than 0.01°C.

Priced at $11.80 (USD) each in quantities of 10,000, the MS5806 is available now. Delivery time varies dependent upon the quantity ordered.

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