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.

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