AD7151BRMZ

AD7151 is 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 sensors, such as high input sensitivity and high tolerance of both input parasitic ground capacitance and leakage current. The integrated adaptive threshold algorithm compensates for any variations in the sensor capacitance due to environmental factors like humidity and temperature or due to changes in the dielectric material over time. Typical application includes proximity sensing, contactless switching, position detection and level detection.

• Ultra-low power: 2.7V to 3.6V, 70μA
• Response time of 10ms
• EMC tested
• Adaptive environmental compensation
• 1 capacitance input channel: sensor capacitance (CSENS) 0 pF up to 13 pF and sensitivity to 1fF
• 2 modes of operation: standalone with fixed settings and interfaced to MCU for user-defined settings
• Proximity detection output flag
• 2-wire serial interface (I2C compatible)
• 10 lead SOP package
• Operating temperature range from -40 to 85°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party