onsemi LC717A30UJ capacitance-digital-converter

The LC717A30UJ is a high performance and cost-effective capacitance converter for electrostatic capacitive touch and proximity sensors.

The device offers 8 capacitance-sensing input channels, ideal for use in systems that require an array of switches. The LC717A30J reduces design time via an automatic calibration function and minimal external components. The detection result (ON/OFF) for each sensor is read out by the serial interface (I2C or SPI).

Key features

• High-performance and cost-effective
• Minimal external components
• Selectable interface : I2C or SPI
• AEC-Q100 qualified and PPAP capable

Additional features

• Detection system: Differential capacitive detection using mutual capacitance
• Sensor input pads: Operates with small to large capacitance sensor input pads
• Input capacitance resolution: Capacitance detection down to femto-Farad level
• Measurement time 16 ms for 8 sensors
• Current consumption : 0.8 mA (VDD = 5.5 V)
• Supply voltage : 2.6 to 5.5 V

Applications

• Automotive
• Consumer
• Industrial
• Computing
• Lighting