Part # AD7151 datasheet

Part Manufacturer: Analog Devices

Analog Devices

Part Description: AD7151 Ultra-Low Power 1-Channel Capacitance Converter for Proximity Sensing Data Sheet (Rev. 0)

Part Details:

Ultra-Low Power, 1-Channel, Capacitance Converter for Proximity Sensing AD7151 FEATURES GENERAL DESCRIPTION Ultra-low power The AD7151 delivers a complete signal processing solution for 2.7 V to 3.6 V, 70 A capacitive proximity sensors, featuring an ultra-low power Response time: 10 ms converter with fast response time. The AD7150 is a 2-channel Adaptive environmental compensation alternative to the AD7151. 1 capacitance input channel The AD7151 uses Analog Devices, Inc., capacitance-to-digital Sensor capacitance (CSENS) 0 pF up to 13 pF converter (CDC) technology, which combines features Sensitivity to 1 fF important for interfacing to real sensors, such as high input EMC tested sensitivity and high tolerance of both input parasitic ground 2 modes of operation capacitance and leakage current. Standalone with fixed settings Interfaced to a microcontroller for user-defined settings The integrated adaptive threshold algorithm compensates for Proximity detection output flag any variations in the sensor capacitance due to environmental 2-wire serial interface (I2C compatible) factors like humidity and temperature or due to changes in the Operating temperature dielectric material over time. -40°C to +85°C By default, the AD7151 operates in standalone mode using the 10-lead MSOP package fixed power-up settings and indicates detection on a digital APPLICATIONS output. Alternatively, the AD7151 can be interfaced to a microcontroller via the serial interface, the internal registers can Proximity sensing be programmed with user-defined settings, and the data and Contactless switching status can be read from the part. Position detection Level detection The AD7151 operates with a 2.7 V to 3.6 V power supply. It is specified over the temperature range of -40°C to +85°C. FUNCTIONAL BLOCK DIAGRAM VDD AD7151 CIN DIGITAL SERIAL SCL - CDC FILTER

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AD7151.pdf Datasheet