Part: BME680 — Bosch Sensortec

Type: Low power gas, pressure, temperature & humidity sensor

Description: A digital 4-in-1 sensor with gas, humidity, pressure, and temperature measurement, housed in an extremely compact 3.0 × 3.0 × 0.93 mm metal-lid LGA package, featuring I²C and SPI digital interfaces.

Operating Conditions:

• Supply voltage: VDD main 1.71 V to 3.6 V, VDDIO interface 1.2 V to 3.6 V
• Operating temperature: -40 to +85 °C
• Operating humidity: 0 - 100% r.H.
• Operating pressure: 300 - 1100 hPa

Key Specs:

• Sleep current: 0.15 μA (Typ)
• Current during humidity measurement: 340 μA (Typ, Max at 85 °C)
• Current during pressure measurement: 714 μA (Typ, Max at -40 °C)
• Current during temperature measurement: 350 μA (Typ, Max at 85 °C)
• Gas sensor response time (continuous mode, τ 33 - 63%): 0.75 s (Typ)
• Humidity sensor accuracy tolerance: ±3% r.H.
• Pressure sensor RMS Noise: 0.12 Pa (equiv. to 1.7 cm)
• IAQ Range: 0 - 500

Features:

• 3.0 mm x 3.0 mm x 0.93 mm metal lid LGA package
• Digital interface: I²C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz)
• Low power consumption (e.g., 0.15 μA in sleep mode)
• Individual humidity, pressure, and gas sensors can be independently enabled/disabled
• RoHS compliant, halogen-free, MSL1
• Direct index for air quality (IAQ) output

Applications:

• Indoor air quality
• Home automation and control
• Internet of things
• Weather forecast
• GPS enhancement
• Indoor navigation
• Outdoor navigation, leisure and sports applications
• Vertical velocity indication

Package:

• 3.0 mm x 3.0 mm x 0.93 mm metal lid LGA

• Package

3.0 mm x 3.0 mm x 0.93 mm metal lid LGA

• Digital interface

I²C (up to 3.4 MHz) and SPI (3 and 4 wire, up to 10 MHz)

• Supply voltage

VDD main supply voltage range: 1.71 V to 3.6 V

VDDIO interface voltage range: 1.2 V to 3.6 V

• Current consumption

2.1 μA at 1 Hz humidity and temperature

3.1 μA at 1 Hz pressure and temperature

3.7 μA at 1 Hz humidity, pressure and temperature

0.09 - 12 mA for p/h/T/gas depending on operation mode

0.15 μA in sleep mode

• Operating range

-40 - +85 °C, 0 - 100% r.H., 300 - 1100 hPa

• Individual humidity, pressure and gas sensors can be independently enabled/disabled

• The product is RoHS compliant, halogen-free, MSL1

• Indoor air quality
• Home automation and control
• Internet of things
• Weather forecast
• GPS enhancement (e.g. time-to-first-fix improvement, dead reckoning, slope detection)
• Indoor navigation (change of floor detection, elevator detection)
• Outdoor navigation, leisure and sports applications
• Vertical velocity indication (rise/sink speed)

BME680 LGA Pinout

Notes

• Package: LGA 3.0 × 3.0 × 0.93 mm (8-pin)
• Interface Selection: CSB pin selects between I²C and SPI modes. Pull CSB high for SPI mode, low for I²C mode.
• I²C Mode: SDI acts as SDA, SCK acts as SCL. SDO and CSB configure the I²C slave address.
• SPI Mode: SDI = MOSI, SDO = MISO, SCK = Clock, CSB = Chip Select (active low).
• Supply: VDD and VDDIO must both be present. VDD is the main sensor supply; VDDIO powers the digital interface.
• Decoupling: Recommend 100 nF capacitors close to VDD and VDDIO pins.

The absolute maximum ratings are determined over the complete temperature range using corner lots. The values are provided in Table 9.

Table 9: Absolute maximum ratings

• Indoor air quality
• Home automation and control
• Internet of things
• Weather forecast
• GPS enhancement (e.g. time-to-first-fix improvement, dead reckoning, slope detection)
• Indoor navigation (change of floor detection, elevator detection)
• Outdoor navigation, leisure and sports applications
• Vertical velocity indication (rise/sink speed)

Picture 13: Package dimensions for top, bottom and side view