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AS7000 Biosensor

Optical module with LEDs, integrated IC, analog frontend and Cortex-M0 processor


The AS7000 solution contains the AS7000 module including the LEDs, photo-sensor, analog front end (AFE) and controller as well as application software required to implement an accurate optical HRM/HRV fitness band product.

The module also enables skin temperature and skin resistivity measurements by providing interfaces to external sensors.

The AS7000’s low-power design is particularly well suited to application in fitness bands, smart watches and sports watches, in which board space is limited and in which users look for extended, multi-day intervals between battery recharges.

Key Features

  • Single device integrated optical solution
  • Analog optical front end
  • Analog electrical front end
  • Hardware sequencer
  • Powerful 32bit Cortex-M0 processor
  • Synchronous demodulator
  • Integrated LED driver with current control
  • Optical filters

Key Benefits

  • Enables smallest application size
  • Industry-leading HRM measurement quality
  • Provides valuable additional information for end user
  • Long Operating Time
  • Works reliably with ambient light

Product Facts

Supply Voltage  [V] 2.6 - 3.6
I²C Bus 1.7V-VDD
Temperature Range [°C] -30 to 70
Packages 18-Pin Module
LED Configuration Green + Green
Supported Algorithms HRV, PRV

Additional Information

  • Optical heart rate monitor
  • Medical sensors
  • Chemical sensors
  • Handheld “point of care” devices
  • Industrial sensors