PM2.5
Primary Output
0–1000
µg/m³ Range
1 µg/m³
Resolution
0.5 µm
Min Particle Size
4.4×3.0 mm
Sensor Size
0.092 g
Weight
<68 mA
Avg Current
10 years
MTTF Lifetime
Description
The BMV080 is an ultra-mini opto-electronic particulate matter sensor capable of measuring PM1, PM2.5, and PM10 mass concentration in real-time. It uses a fanless laser-based optical technology measuring particles in free space via Doppler-shifted back-scattered light. Its revolutionary small size (4.4×3.0×3.0mm sensing element — 450× smaller than comparable devices) and low power consumption enable integration into ultra-compact IoT devices.
Features
- ▶ Ultra-compact form factor — world's smallest PM sensor
- ▶ Innovative fanless design — noiseless, maintenance-free
- ▶ No inlets or channels — minimum industrial design impact
- ▶ Measures PM1, PM2.5, and PM10 simultaneously
- ▶ Triple-axis laser with Doppler velocity measurement
- ▶ Immune to ambient light interference
- ▶ Dust-proof or waterproof integration possible
- ▶ Class 1 laser (IEC 60825-1) — eye safe
- ▶ 3 measurement algorithms: High Precision, Balanced, Fast Response
- ▶ Continuous and duty-cycling measurement modes
Pin Configuration (13-Pin Flex PCB / ZIF Connector)
1VDDLPWR
Laser supply voltage. 3.3V. Decouple from VSSA by >1µF.
2VSSAGND
Analog ground. Reference for VDDL and VDDA. Connect close to BMV080 header.
3VDDAPWR
ADC supply voltage. 2.5–3.3V. Decouple from VSSA by >1µF.
4CSBDI
SPI: Chip select (nSS, active low). I²C: Address bit 1 (IAB1).
5MOSIDI/DO
SPI: Master Out Slave In. I²C: Serial Data (SDA).
6SCKDI
Serial clock input. Used for both SPI and I²C protocols.
7PSDI
Protocol select. Low=SPI, High/NC=I²C. Latched at power-up.
8VDDIOPWR
Interface power supply. 1.2–3.3V (typ 1.8V). Match host MCU I/O level.
9VSSDGND
Digital ground. Reference for VDDD and VDDIO.
10VDDDPWR
Digital supply voltage. 2.5–3.3V. Decouple from VSSD by >1µF.
11MISODI/DO
SPI: Master In Slave Out. I²C: Address bit 0 (IAB0).
12IRQDO
Interrupt output. Active low. Internal pull-up enabled by default.
13NC—
Do not connect. Keep floating — do not connect to ground or apply voltage.
Technical Specification
| Parameter | Value | Unit |
|---|---|---|
| PM2.5 Measurement Range | 0–1000 | µg/m³ |
| PM2.5 Output Resolution | 1 | µg/m³ |
| Minimum Detectable Particle Size | 0.5 | µm |
| Relative Particle Velocity | 0.02–1.5 | m/s |
| Precision (0–100 µg/m³) | ±10 µg/m³ | |
| Precision (101–1000 µg/m³) | ±10% | |
| Linearity R (0–400 µg/m³) | ≥0.98 | |
| Linearity R (401–1000 µg/m³) | ≥0.95 | |
| Max Output Data Rate | 0.97 | Hz |
| Interface | SPI, I²C | |
| Average Current (continuous) | <68 | mA |
| Sleep Current | <30 | µA |
| Start-up Time (polling) | 1.9 | s |
| Start-up Time (IRQ) | 2.9 | s |
| Operating Lifetime (MTTF) | 10 years | |
| Sensor Dimensions | 4.4 × 3.0 × 20.0 | mm |
| Weight | 0.092 | g |
| Laser Class | Class 1 (IEC 60825-1) |
Absolute Maximum Ratings
| Parameter | Min | Max | Unit |
|---|---|---|---|
| VDDIO | 1.14 | 3.47 | V |
| VDDD | 2.38 | 3.47 | V |
| VDDL | 3.14 | 3.47 | V |
| VDDA | 2.38 | 3.47 | V |
| ESD — HBM | -2 | 2 | kV |
| ESD — CDM | -500 | 500 | V |
| Operating Temperature | +15 | +65 | °C |
| Operating Humidity | 0 | 95 | %rH |
Power Consumption by Mode
| Mode | Duty Cycle | Power |
|---|---|---|
| Continuous | 1 reading/s | 181.9 mW |
| Duty Cycling 1 min | 1 reading/min | 30.4 mW |
| Duty Cycling 5 min | 1 reading/5 min | 6.2 mW |
| Duty Cycling 10 min | 1 reading/10 min | 3.1 mW |
| Duty Cycling 60 min | 1 reading/hr | 0.6 mW |
Power Domains
| Domain | Min | Max | Abs Max | Description |
|---|---|---|---|---|
| VDDIO | 1.14V | 3.47V | 3.6V | Interface I/O supply — match host MCU level |
| VDDD | 2.38V | 3.47V | 3.6V | Digital core supply |
| VDDL | 3.14V | 3.47V | 3.6V | Laser supply — must be 3.3V |
| VDDA | 2.38V | 3.47V | 3.6V | ADC analog supply |
All supply pins require >1µF decoupling. VDDL and VDDA require 100mVPP max ripple at any frequency. Power-up sequence: VDDL must ramp within 10ms, other rails stable before SPI/I²C communication begins.
Communication Interface
| Protocol | Clock | PS Pin | Notes |
|---|---|---|---|
| SPI Mode 0 | Up to 10 MHz | Low (VSSD) | 4-wire, CPOL=0 CPHA=0 |
| I²C | Up to 400 kHz | High (VDDIO) | 7-bit address, 2 address bits configurable via IAB0/IAB1 |
I²C Address Selection
| IAB1 (Pin 4) | IAB0 (Pin 11) | Address |
|---|---|---|
| VSSD | VSSD | 0x56 |
| VSSD | VDDIO | 0x57 |
| VDDIO | VSSD | 0x66 |
| VDDIO | VDDIO | 0x67 |
Diagrams & Figures (11 from datasheet)
Click any diagram to expand. From Bosch BMV080 BST-BMV080-DS000-12.
Overview & Principle (3)
BMV080 on Fingertip (Scale)
The BMV080 on a human fingertip — 4.4×3.0×20mm, 0.092g. 450× smaller than comparable PM sensors.
Operating Principle
Fanless laser-based optical measurement. Laser scatters off particles ~5mm above lens. Back-scattered Doppler-shifted light detected by integrated photodiodes.
Hardware & Software Architecture
BMV080 sensor connected to host MCU via SPI/I²C. Sensor driver SDK runs on host, outputs PM mass concentration.
Mechanical & Package (4)
Package Overview (Lens & LGA)
Lens, LGA substrate, and flex PCB. No condensation allowed on lens or substrate.
Package 3D View
Isometric view: flex PCB, lens assembly, LGA package. Total height 3.005mm.
Dimensional Drawings
Top, side, bottom views with dimensions. Flex PCB 5.5×20.0mm.
ZIF Connector Detail
0.6mm pitch, 13 pins. Compatible with Molex 503566-1302.
Integration & Thermal (2)
Mounting Concepts (Cross-Section)
Case mounting (left) vs PCB mounting (right). Shows sealing, heat sink, thermal paths.
Thermal Integration
Thermal stack: BMV080 → flex PCB → tape → heat sink. Operating 15–65°C.
Electrical & Pinout (1)
Pin Layout (Top & Bottom)
Top/bottom view with pin numbering 01–13.
Timing & Modes (1)
Continuous Measurement Timing
Rolling integration windows. PM2.5 output every 1.03s.
Sensor Driver API
The BMV080 sensor driver runs on the host MCU. It communicates with the sensor via SPI/I²C and provides PM concentration output. Minimum host requirements: 32-bit MCU, 48KB Flash, 16KB RAM, C99 compiler.
Measurement Algorithms
| Algorithm | Mode | Description |
|---|---|---|
| High Precision | Continuous only | Best accuracy. Uses rolling integration windows. Recommended for indoor AQ monitors. |
| Balanced | Continuous only | Good precision with faster initial response. |
| Fast Response | Both | Quickest reaction to PM changes. Only option for duty cycling mode. |
Key API Functions
| Function | Description |
|---|---|
| bmv080_open() | Initialize sensor handle, register I/O callbacks |
| bmv080_init() | Initialize sensor hardware, load firmware |
| bmv080_start_continuous() | Start continuous measurement mode |
| bmv080_start_duty_cycling() | Start duty cycling measurement with configurable period |
| bmv080_get_data() | Poll for new PM measurement (software trigger mode) |
| bmv080_stop() | Stop measurement, enter sleep mode (<30µA) |
| bmv080_close() | Release sensor handle and resources |
| bmv080_get_id() | Read unique sensor ID |
Output Data Structure
| Field | Type | Description |
|---|---|---|
| pm2p5 | float | PM2.5 mass concentration (µg/m³) |
| pm1 | float | PM1 mass concentration (µg/m³) |
| pm10 | float | PM10 mass concentration (µg/m³) |
| is_ready | bool | Data validity flag (true after startup stabilization) |
| obstruction | bool | Static obstruction detected in optical path |
Target Applications
- ▶ Indoor air quality monitors
- ▶ Smart thermostats with AQ sensing
- ▶ Smart air purifiers (feedback control)
- ▶ Wearable air quality devices
- ▶ HVAC systems with PM-based filtration control
- ▶ Electronics accessories (phone cases, earbuds)
- ▶ Industrial particulate monitoring
Air Quality Index Reference (EPA PM2.5)
| PM2.5 (µg/m³) | AQI Category | Health Advisory |
|---|---|---|
| 0–12.0 | Good | Air quality satisfactory, little or no risk |
| 12.1–35.4 | Moderate | Acceptable; risk for unusually sensitive people |
| 35.5–55.4 | Unhealthy (sensitive) | Sensitive groups may experience health effects |
| 55.5–150.4 | Unhealthy | General public may experience effects |
| 150.5–250.4 | Very Unhealthy | Health alert: increased risk for everyone |
| >250.4 | Hazardous | Emergency conditions: everyone affected |
WHO Guidelines (2021)
Annual mean: 5 µg/m³ · 24-hour mean: 15 µg/m³