BMP280 Temperature and Pressure Sensor – Digital Barometric Sensor ModuleSKU 2129

Sensors & Modules

BMP280 Temperature and Pressure Sensor – Digital Barometric Sensor Module

₹100

01 — About

What it does

The BMP280 Temperature and Pressure Sensor is a high-precision, ultra-low-power digital barometric pressure and temperature sensor module designed for weather monitoring, altitude estimation, indoor navigation, and IoT applications. Developed by Bosch Sensortec, this compact sensor delivers ±1 hPa absolute pressure accuracy and ±1.0°C temperature accuracy with a tiny LGA-8 footprint. Featuring both I2C and SPI interfaces, three programmable power modes, and a built-in IIR filter, it is the ideal choice for Arduino, Raspberry Pi, ESP32, and other embedded platforms requiring reliable environmental sensing in space-constrained designs.

Key features

  • High-precision barometric pressure measurement: 300–1100 hPa
  • Temperature measurement with ±1.0°C accuracy
  • Absolute pressure accuracy: ±1 hPa (typical)
  • Relative accuracy: ±0.12 hPa (equivalent to ±1m altitude)
  • Ultra-low power consumption: 2.7µA @ 1 Hz sampling rate
  • Ultra-low sleep mode current: 0.1µA
  • Dual digital interfaces: I2C (up to 3.4 MHz) and SPI (up to 10 MHz)
  • Two selectable I2C addresses: 0x76 and 0x77
  • Built-in IIR filter for noise reduction
  • Three power modes: Sleep, Forced, and Normal
  • Factory-calibrated with compensation coefficients in OTP memory
  • Compact LGA-8 package: 2.0 × 2.5 × 0.95 mm
  • Wide operating temperature range: -40℃ to +85℃
  • 3.3V and 5V logic compatible (module versions)

Good to know

  • Do not connect the bare BMP280 chip directly to 5V logic — the chip operates at 1.71V–3.6V. Use a 3.3V regulator or a 5V-compatible breakout module with onboard level shifting.
  • When using I2C, connect CSB to VCC (or leave floating on modules with pull-up) to select I2C mode. Ground CSB to select SPI mode.
  • Set the I2C address by controlling the SDO pin: connect to GND for 0x76 (default on most modules) or to VCC for 0x77.
  • The sensor is factory-calibrated — no external calibration is required. Compensation coefficients are stored in internal OTP memory.
  • For outdoor use, enclose the sensor in a radiation shield or ventilated housing to protect from direct water ingress and direct sunlight.
  • Mount the sensor on vibration-dampening material when used in drones to reduce noise from motor vibrations.
  • Use the Bosch Sensortec API or official libraries for optimal readout and compensation calculations.
  • Store in anti-static packaging when not in use to prevent ESD damage.

02 — Datasheet

Specifications

26
Chip Model
BMP280 (Bosch Sensortec)
Sensor Type
Digital Barometric Pressure + Temperature
Pressure Measurement Range
300 hPa – 1100 hPa (+9000m to -500m above sea level)
Pressure Absolute Accuracy
±1.0 hPa (950–1050 hPa, 0℃ to +65℃)
Pressure Relative Accuracy
±0.12 hPa (700–900 hPa @ 25℃), equivalent to ±1m
Temperature Measurement Range
-40℃ to +85℃
Temperature Accuracy
±1.0℃ (at 25℃), ±0.5℃ typical
Temperature Resolution
0.01℃ (in full oversampling mode)
Pressure Resolution
0.16 hPa (ultra high resolution mode)
Operating Voltage (VDD)
1.71V – 3.6V (chip); 3.3V/5V (module)
Interface Voltage (VDDIO)
1.2V – 3.6V
Interface
I2C (up to 3.4 MHz) / SPI (3-wire and 4-wire, up to 10 MHz)
I2C Address
0x76 (SDO low) / 0x77 (SDO high)
Current Consumption (Normal Mode)
2.7µA @ 1 Hz (typical), up to 4.2µA max
Current Consumption (Sleep Mode)
0.1µA (typical), up to 0.3µA max
Peak Current (Pressure Measurement)
720µA typical, 1120µA max
Measurement Time
5.5 ms (ultra-low power preset)
Maximum Sampling Rate
157 Hz (forced mode)
IIR Filter Options
OFF, 2x, 4x, 8x, 16x
Oversampling Options
1x, 2x, 4x, 8x, 16x (independent for pressure and temperature)
Package Type
8-pin LGA with metal lid
Chip Dimensions
2.0mm × 2.5mm × 0.95mm
Module Dimensions (typical)
~11.5mm × 15mm (varies by breakout board)
Pin Pitch
2.54mm (module)
RoHS Compliance
Yes (Lead-free, halogen-free)
Application Type
Arduino, Raspberry Pi, ESP32, weather stations, drones, IoT