ENS170A – Automotive-Grade Air Quality / Multi-Gas Sensor Array

The ENS170A is an automotive-grade, micro-machined, multi-gas / air quality sensor ASIC with integrated Arm Cortex-M0 CPU.

It has a LIN, I2C, SPI, or PWM slave interface in addition to higher processing power for gas detection (reducing and oxidizing). Its additional I2C-master allows it to operate other I2C slave devices, like pressure and humidity sensors and actuators. The ENS170A can serve as the primary controller in these combination modules, thus reducing the overall cost of the BOM.
The ENS170A is perfectly suited for air quality applications, Li-Ion battery state monitoring, and thermal runaway detection thanks to its multi-gas sensor array. Because of its compact design, it may be directly integrated into battery management systems, battery electric vehicle balancers, and stationary battery solutions. It is also suitable for direct board integration in the smallest automotive modules.
ENS170A Automotive-Grade Air Quality/Multi-Gas Sensor Array

Environmental Sensor Products


  • Gas sensor array to detect reducing and oxidizing gases, including volatile organic compounds
  • Built-in Arm Cortex-MO controller with 32k flash memory
  • LIN, I2C, SPI, or PWM slave interface including interrupt pin
  • I2C master interface
  • Customer-specific firmware


  • Enabling tiniest automotive air quality & gas detection designs
  • No additional host controller required
  • Significantly reduced total BOM costs
  • Control of further I2C devices at no additional cost
  • Flexible, custom designs
  • Tape & reel, reflow solderable


Automotive grade device
AEC-Q100 Level 2/MSL-1
Voltage range
3.0 – 3.6V
Standby current
MIS package
3.5 x 3.5 x 1.0mm3


  • Air Intake classification & Recirculation Control
  • Li-Ion Battery Condition Monitoring
  • HvAC Air Duct Dewpoint Detection

ENS170A Block Diagram

ENS170A Block Diagram

Documentation & Downloads
ENS170A Factsheet Evaluation Kit – Coming Soon