Pressure Sensors, Transducers DIGITAL BAROMETRIC PRESSURE SNSR BMP085 is a sensor from BOSCH. This article will unlock more details about BMP085. There is a huge range of Semiconductors, Capacitors, Resistors and ICs in stock. Welcome RFQ.
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Oct 7, 2021
Morton Sassoon
BMP085 Barometric Pressure Sensor with ARDUINO UNO.
Pressure Sensors, Transducers DIGITAL BAROMETRIC PRESSURE SNSR
BMP085 is a sensor from BOSCH. This article will unlock more details about BMP085. There is a huge range of Semiconductors, Capacitors, Resistors and ICs in stock. Welcome RFQ.
BMP085
| Pin | Name | Function |
| 1 | Ground | This pin is connected to ground |
| 2 | EOC | EOC (End Of Conversion) pin is used as an indicator to speed up conversion time |
| 3 | Vdda | The positive power supply is connected to this pin |
| 4 | Vddd | Digital power supply pin is tied together with Vdda pin and connected to power |
| 5 | NC | No Connection |
| 6 | SCL | I2C interface - Serial Clock pin |
| 7 | SDA | I2C interface - Serial Data pin |
| 8 | XCLR | Master clear pin (Active low) |
BMP085 Symbol
3D Model
BMP085 3D Model
BOSCH's BMP085 sensor measures both barometric pressure and temperature. The gadget is suited for advanced mobile applications because it is intended for high precision measurements and low power consumption.
Bosch Sensortec BMP085 technical specifications, attributes, parameters and parts with similar specifications to Bosch Sensortec BMP085.
| Product Attribute | Attribute Value | |
|---|---|---|
| Package / Case | 8-CLCC | |
| Surface Mount | YES | |
| Number of Pins | 8Pins | |
| Operating Temperature | -40°C~85°C | |
| Packaging | Tape & Reel (TR) | |
| Published | 2008 | |
| Part Status | Obsolete | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Number of Terminations | 8Terminations | |
| Termination | SMD/SMT | |
| Applications | Board Mount |
| Product Attribute | Attribute Value | |
|---|---|---|
| Voltage - Supply | 1.62V~3.6V | |
| Terminal Form | BUTT | |
| Number of Functions | 1Function | |
| Terminal Pitch | 1.27mm | |
| Output | 16 ~ 19 b | |
| Termination Style | SMD (SMT) Tab | |
| Qualification Status | Not Qualified | |
| Output Type | I2C | |
| Supply Voltage-Max (Vsup) | 3.6V | |
| Supply Voltage-Min (Vsup) | 1.62V | |
| Analog IC - Other Type | ANALOG CIRCUIT |
| Product Attribute | Attribute Value | |
|---|---|---|
| Accuracy | ±2% | |
| Operating Pressure | 4.35PSI ~ 15.95PSI (30kPa ~ 110kPa) | |
| Pressure Type | Absolute | |
| Port Style | No Port | |
| Maximum Pressure | 145.04PSI (1000kPa) | |
| Max Pressure | 145.04 PSI | |
| Length | 5mm | |
| Width | 5mm | |
| RoHS Status | RoHS Compliant |
Low-cost device
High precision
Temperature sensor included
Robust package
Low power: 5μA at 1 sample / sec. in standard mode
I2C interface
Fully calibrated
Pb-free, halogen-free and RoHS compliant
Pressure range: 300 ... 1100hPa (+9000m ... -500m above sea level)
Operating voltage range: 1.8V to 3.6V
Operating temperature range: -40ºC to +85ºC
Conversion time temperature: 4.5ms maximum
Conversion time pressure: 25.5ms maximum
Indoor and outdoor navigation
Sports equipment
Weather forecast
Temperature sensor
Vertical velocity indication
Enhancement of GPS navigation
Hobby projects
BMP085 is mostly utilized when precise measurements of ambient pressure and temperature are required. Although the device is accurate, it has become obsolete because of the availability of more accurate BMP series devices on the market. BMP180 detects barometric pressure more accurately than other modules on the market.
BMP085 is designed to utilize extremely little power, allowing it to be employed in battery-operated devices such as smartwatches and mobile phones. The device also communicated through the serial interface, allowing it to be easily interfaced with modern microcontrollers and microprocessors.
The typical application circuit for the device BMP085 is given below.
BMP085 Typical Application Circuit
Three pins are connected between the microcontroller and the device, as indicated in the circuit diagram. Only two pins are used to connect with the module, and this communication is done via the I2C protocol. This I2C interface is used to send data to or receive data from the module. As a result, we must use this interface to obtain information on barometric pressure and temperature. Simply connect the SDA pin of the module to the SDA pin of the C (microcontroller) and the SCL pin of the module to the SCL pin of the C (microcontroller) to create an I2C interface (microcontroller).
The arrangement can be powered from a voltage source ranging from +1.8V to +3.6V, but a 3.3V power source is more convenient.
All that remains is to program the microcontroller to communicate with the module after the connections are complete. We'll leverage libraries that have already been created for the module to make communication simple. Using these libraries simplifies communication; all you have to do is download them and call them up in programs. After you've included the header file, you can send and receive data from the module with simple commands.
We can use the data (which represents barometric pressure and temperature) as needed in the application once it is received from the module. As a result, we can utilize BMP085 to monitor barometric pressure in this manner.
BMP085 Package
Devoted to consumer electronics worldwide, Bosch Sensortec (fully owned by Robert Bosch GmbH as a subsidiary firm) provides a portfolio of MEMS(micro-electro-mechanical systems) based solutions and chips for applications in wearable devices, smartphones, tablets, and a number of products in the field of IoT(Internet of Things). With their great effort, more and more mobile devices are able to sense the world.
Download datasheets and manufacturer documentation for BMP085
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