AD7151
Info: : PRODUCTION
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AD7151

Ultra-Low Power, 1-Channel, Capacitance Converter for Proximity Sensing

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $1.66
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 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
Additional Details
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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 two-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.

By default, the AD7151 operates in standalone mode using the fixed power-up settings and indicates detection on a digital output. Alternatively, the AD7151 can be interfaced to a microcontroller via the serial interface, the internal registers can be programmed with user-defined settings, and the data and status can be read from the part.

The AD7151 operates with a 2.7 V to 3.6 V power supply. It is specified over the temperature range −40°C to +85°C.

APPLICATIONS

  • Proximity sensing
  • Contactless switching
  • Position detection
  • Level detection
Part Models 2
1ku List Price Starting From $1.66

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7151BRMZ
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AD7151BRMZ-REEL
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Product Lifecycle

PCN

Jan 26, 2016

- 15_0176

Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines

May 15, 2012

- 10_0006

Halogen Free Material Change for mini SOIC Products

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Part Models

Product Lifecycle

PCN

Jan 26, 2016

- 15_0176

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Assembly Transfer of Select 8/10L MSOP Products to Amkor Philippines

May 15, 2012

- 10_0006

arrow down

Halogen Free Material Change for mini SOIC Products

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