Capacitance Converter
Ultra-Low Power, 1-Channel, Capacitance Converter for Proximity Sensing AD7151
FEATURES
Ultra-low power 2.7 V to 3.6 V,...
Description
Ultra-Low Power, 1-Channel, Capacitance Converter for Proximity Sensing AD7151
FEATURES
Ultra-low power 2.7 V to 3.6 V, 70 μA
Response time: 10 ms Adaptive environmental compensation 1 capacitance input channel
Sensor capacitance (CSENS) 0 pF up to 13 pF Sensitivity to 1 fF EMC tested 2 modes of operation Standalone with fixed settings Interfaced to a microcontroller for user-defined settings Proximity detection output flag 2-wire serial interface (I2C compatible) Operating temperature −40°C to +85°C 10-lead MSOP package
APPLICATIONS
Proximity sensing Contactless switching Position detection Level detection
GENERAL DESCRIPTION
The AD7151 delivers a complete signal processing solution for capacitive proximity sensors, featuring an ultra-low power converter with fast response time. The AD7150 is a 2-channel alternative to the AD7151.
The AD7151 uses Analog Devices, Inc., capacitance-to-digital converter (CDC) technology, which combines features important for interfacing to real se...
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