Si118x Biometric Optical Sensor

Our Si118x sensors feature the lowest power optical heart rate (HR) solution in the industry with best-in-class power. They combine a photodiode, analog front-end and ADC in a small 3x3 QFN device, and allow for the ultimate flexibility in optical design while reducing BOM size.

The Si1182 sensor also has the capability to perform single channel ECG measurements alongside optical HR, allowing you to add additional value and gather more physiological information from the user.

Small package
3.0x3.0 mm
LED drivers
4

Si118x Biometric Sensor Common Specs

  • AFE/ADC and photodiode in a clear QFN package:
    • High sensitivity photociode
    • Low noise analog front-end and ADC
    • 4 LED drivers
  • Four independent, regulated LED drivers (1.7 to 310 mA)
  • > 50 uA current for continuous HR (LED + Sensor Power)
  • Built-in 2k Buffer
  • Supports synchronization with an accelerometer
  • 24 bit ADC and AFE with over 100 dB dynamic range
  • Small size (3.0x3.0 mm)
  • I2C and SPI support
  • < 500 nA standby current
  • Built-in ECG front-end for single channel ECG measurements (Si1182)
Status
Find the Right Si118x Device Select Columns
Select Columns
Part Number Description Package Type Package Size (mm)
Optical PPG sensor with integrated PD for heart rate monitoring Clear QFN 3x3
Optical PPG/ECG sensor with integrated PD for heart rate monitoring with Silicon Labs HRM algorithm Clear QFN 3x3
Optical PPG/ECG sensor with integrated PD for heart rate monitoring Clear QFN 3x3
Optical PPG sensor with integrated PD for heart rate monitoring with Silicon Labs HRM algorithm Clear QFN 3x3

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