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MS5805-02BA01-Digital Pressure & Altimeter
Brand: American Sensor Technologies Inc
The MS5805-02BA is a new generation of high-resolution altimeter sensors from MEAS Switzerland with I²C bus interface.
It is optimized for altimeters and variometers with an altitude resolution of 20 cm. The sensor module includes a high-linearity pressure sensor and an ultra low power 24 bit ΔΣ ADC with internal factory-calibrated coefficients. It provides a precise digital 24-bit pressure and temperature value and different operation modes that allow the user to optimize for conversion speed and current consumption.
A high-resolution temperature output allows the implementation of an altimeter/thermometer function without any additional sensor. The MS5805-02BA can be interfaced to virtually any microcontroller. The communication protocol is simple, without the need of programming internal registers in the device.
This new sensor module generation is based on leading MEMS technology and latest benefits from MEAS Switzerland proven experience and know-how in high volume manufacturing of altimeter modules, which have been widely used for over a decade. The sensing principle employed leads to very low hysteresis and high stability of both pressure and temperature signal.
Specifications
Accuracy
- ± 1° C (± 1.8° F) - Absolute Accuracy at 25° C
- ± 2 Mbar
- ± 2° C (± 3.6° F) - Absolute Accuracy at -20° to 85° C (-4° to 185° F)
- ± 4 Mbar
Approvals & Certifications
- RoHS
Communication
- 24-bits - Analog to Digital Converter & Output Word
Input
- 0.01-0.1 µA - Standby Supply Current at 25° C
- 0.1 µA - Input Leakage Current at 25° C
- 0.63 - 20.09 µA - Supply Current
- 0-20 % Vdd - Input Low Voltage
- 1.25 mA - Peak Supply Current
- 80-100 % Vdd - Input High Voltage
Load Limit
- 100-470 NF - Vdd Capacitor
- 16 PF - Load Capacitance
Maximum System Pressure
- psi: 0.145 to 29.01 (kPa: 1 to 200, Mbar: 10 to 2,000) - Extended Pressure Range
- psi: 72.52 (kPa: 500, bar: 5)
Operating Temperature
- 250° C (482° F) - Max.
- -40° to 85° C (-40° to 185° F)
Output
- ± 100 mA - Latch Up
- 0-20 % Vdd - Output Low Voltage
- 80-100 % Vdd - Output High Voltage
Pressure Range
- kPa: 30 to 120
- mbar: 300 to 1,200
- psi: 0.145 to 29.01 (kPa: 1 to 200, Mbar: 10 to 2,000) - Extended Pressure Range
- psi: 4.351 to 17.4
Resolution
- < 0.01° C
Response Time
- 0.5 to 16.44 milliseconds
- 0.54 to 16.44 milliseconds - Conversion Time
Sensitivity
- ± 2 kV - ESD Rating
Stability
- ± 1 Mbar Per Year - Long Term Stability
Storage Temperature
- -20° to 85° C (-4° to 185° F)
Supply Voltage
- -0.3 to 3.6 V - Vdd
- 1.8-3.6 V
- Mobile Altimeter / Barometer Systems
- Bike Computers
- Adventure or Multi-Mode Watches
- Variometers
- Dataloggers