GENERAL DESCRIPTION

The AD7150 delivers a complete signal processing solution for capacitive proximity sensors, featuring an ultralow power converter with fast response time. The AD7151 is a single-channel, lower power alternative to the AD7150.

FEATURES

Ultralow power

2.7 V to 3.6 V, 100 μA

Response time: 10 ms

Adaptive environmental compensation

2 independent capacitance input channels

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

2 proximity detection output flags

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