AD7156

Ultralow Power, 1.8 V, 3 mm × 3 mm, 2-Channel Capacitance Converter AD7156 FEATURES Ultralow power Power supply voltage: 1.8 V to 3.6 V Operation power supply current: 70 μA typical Power-down current: 2 μA typical Fast response time Conversion time: 10 ms per channel Wake-up time from serial interface: 300 μs Adaptive environmental compensation 2 capacitance input channels Sensor capacitance (CSENS): 0 pF up to 13 pF Sensitivity up to 3 fF 2 modes of operation Standalone with fixed settings Interfaced to a microcontroller for user-defined settings 2 detection output flags 2-wire serial interface (I2C-compatible) Operating temperature: −40°C to +85°C 10-lead LFCSP package (3 mm × 3 mm × 0.8 mm) APPLICATIONS Buttons and switches Proximity sensing Contactless switching Position detection Level detection Portable products GENERAL DESCRIPTION The AD7156 delivers a complete signal processing solution for capacitive sensors, featuring an ultralow power converter with fast respons...