MT3101 is an infrared light to digital converter with a built-in 940nm VCSEL diode and I²C interfaces. This device provides infrared sensing to allow proximity estimation featured with interrupt function.

MT3101 incorporates a photodiode, timing controller and ADC. The spectral response of MT3101 is optimized for infrared light whose wavelength is 940nm. MT3101 employs a noise cancellation scheme to highly reject unwanted ambient noise. The proximity engine features a wide range offset adjustment to compensate for unwanted IR energy reflection at the sensor.

MT3101 is designed to meet the Class 1 laser safety limits including single faults in compliance with IEC/ EN 60825-1: 2014 and IEC/ EN 60825-1: 2007.

• Fully digital control with I²C interface: Support Fast mode (up to 400kHz); Support 3 kinds I²C ID Address

• Built-in temperature compensation circuit and power on reset circuit

• Wide operating temperature range (-20°C to 85°C)

• Built-in VCSEL driver with flexible setting: VCSEL pulse width and count selection; VCSEL current: 2mA to 16mA

• Low noise design

• High ambient light suppression

• Up to 12 bits resolution for proximity detection

• Ultra-low power consumption

• Lead-free package (RoHS compliant)