MEMS pressure sensors (MEMS 壓力感知器)

Barometric Pressure Sensor - BMP085 Breakout

click on the image to enlarge

sku: SEN-09694

Description: This is a simple breakout board for the BMP085 high-precision, low-power barometric pressure sensor. The BMP085 offers a measuring range of 300 to 1100 hPa with an absolute accuracy of down to 0.03 hPa. It's based on piezo-resistive technology for EMC robustness, high accuracy and linearity as well as long term stability. This sensor supports a voltage supply between 1.8 and 3.6VDC. It is designed to be connected directly to a micro-controller via the I²C bus

This breadboard-friendly board breaks out all pins of the BMP085 to a 6-pin 0.1" pitch header. The analog and digital supplies (VDDD and VDDA) of the BMP085 are tied together and broken out to a single pin. We've also put two 4.7k pull-up resistors on the I²C lines.

Features:

• Digital two wire (I²C) interface
  
• Wide barometric pressure range
  
• Flexible supply voltage range
  
• Ultra-low power consumption
  
• Low noise measurement
  
• Fully calibrated
  
• Temperature measurement included
  
• Ultra-flat, small footprint

Dimensions:

• 0.65 x 0.65" (16.5 x 16.5 mm)

Documents:

• Schematic
  
• Datasheet
  
• Eagle Files
  
• Quickstart Guide
  
• Example Arduino Sketch
  
• Example Code (ATmega328)
  
• Product Flyer
  
• SFE Eagle Library has this part!
  
• Wiring Example
  
• mbed User Review

 

http://www.bosch-sensortec.com/content/language1/html/3477.htm

BMP085 – digital barometric pressure sensor

The BMP085 is a high-precision, ultra-low power barometric pressure sensor for use in advanced mobile applications. It offers superior performance with an absolute accuracy of down to 0.03 hPa and using very low power consumption down to 3 µA.

The BMP085 comes in an ultra-thin, robust 8-pin ceramic lead-less chip carrier (LCC) package, designed to be connected directly to a micro-controller of a mobile device via the I²C bus. The footprint of BMP085 is 5 mm * 5 mm, height 1.2 mm.

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Pressure sensors for various applications

Since 1995 Bosch has produced more than 100 million micromechanical pressure sensors. They have proven highest quality standards in the field.
 
The monolithically integrated silicon pressure sensor is a smart high precision measurement device. The sensor element with evaluation circuit is fully calibrated and tested. It is available in different housings.
The sensors can measure pressure ranges from ± 2.5 kPa (relative) up to 3.3 MPa (absolute). The outstanding accuracy of down to 0.25% and their high robustness make the sensors ideal for applications like

• GPS navigation enhancement
• In- and outdoor navigation
• Leisure, sports and health monitoring
• Weather forecast
• Vertical velocity indication (rise/sink speed)
• Fan power control