发表于:2007-10-12 10:45:00
楼主
1. General Description
The SMD500 marks a new generation of high precision
digital pressure sensors for consumer applications.
Its ultra low-power, low voltage electronics are
optimized for use in mobile phones, PDAs, GPS devices
and outdoor equipment. With an altitude noise down to
0.25 m it offers superior performance. The I2C interface
allows for easy system integration with a microcontroller.
Robert Bosch is the world market leader for pressure
sensors in automotive applications. Based on the
experience of over 100 million pressure sensors in the
field, the SMD500 opens a new generation of micromachined
pressure sensors.
Typical Applications
􀀗 Outdoor navigation
􀀗 Dead reckoning
􀀗 Leisure and sports
􀀗 Weather forecast
􀀗 Vertical velocity indication (rise / sink speed)
􀀗 Security systems
Altimeter / Barometer SMD500
Key Features
􀀗 Pressure range 300 ... 1100 hPa (+9000 ... -500 m)
􀀗 Supply voltage 2.0 ... 3.6 V
􀀗 Current consumption 3 μA (std. avg. @ 1 sample / sec.)
8 μA (high resolution)
􀀗 Resolution 0.06 hPa (0.5 m) std. resolution
(rms noise) 0.03 hPa (0.25 m) high resolution
􀀗 Sigma delta ADC
􀀗 Fully calibrated
􀀗 Temperature measurement included
􀀗 Digital two wire I2C interface
􀀗 Lead free and RoHS compliant