Proximity Sensors

Proximity sensors are discrete sensors that sense when an object has come near to the sensor face. They are able to detect the presence of nearby objects without any physical contact. A proximity sensor emits a beam of electromagnetic radiation and looks for changes in the field or return signal. Proximity sensors are commonly used on Smartphone’s to detect accidental touch screen taps when held to the ear during a call. Typical applications include the detection, position, inspection and counting on automated machines and manufacturing systems. There are four fundamental types of proximity sensors Inductive proximity sensor, Capacitive proximity sensor, Ultrasonic proximity sensor and the Photoelectric or Opto-electronic Sensors.


Inductive proximity sensors respond to ferrous and non - ferrous metal objects. They will also detect metal through a layer of non - metal material. Inductive proximity sensors consist of a coil wound around a soft iron core. The inductance of the sensor changes when a ferrous object is in its proximity. This change is converted to a voltage-triggered switch. Capacitive sensors respond to a change in the dielectric medium surrounding the active face without necessarily making physical contact and can thus be tuned to sense almost any substance. Capacitive sensors can also sense a substance through a layer of glass, plastic or thin carton.


Photoelectric sensors offer non-contact sensing of almost any substance or object up to a range of 10 meters. It consists of a light source (usually an LED, light emitting diode, in either infrared or visible light spectrum) and a detector (photodiode). Ultrasonic sensor utilizes the reflection of high frequency (20 KHz) sound waves to detect parts or distances to the parts. Ultrasonic sensors are the best choice for transparent targets.


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Videos

Proximity and gesture sensing using the FDC1004 EVM

Ask an Expert: Can a touch / proximity sensor be used to detect gestures?

Ultrasonic Proximity Sensor - An Introduction To Sensors - PyroEDU

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MTCH101T-I/OT
MTCH101T-I/OT - Proximity Sensor, Adjustable, Open Drain, SOT-23, 6 Pins, 2 V, 5.5 V

2319099

Proximity Sensor, Adjustable, Open Drain, SOT-23, 6 Pins, 2 V, 5.5 V

MICROCHIP

PROXIMITY SENSOR, 5.5V, CAP, 6SOT23; IC Output Type:Open Drain; Sensing Distance:-; Sensor Case Style:SOT-23; No. of Pins:6Pins; Supply Voltage Min:2V; Supply Voltage Max:5.5V; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Rang

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MTCH112-I/SN
MTCH112-I/SN - Proximity Sensor, Open Drain, SOIC, 8 Pins, 1.8 V, 3.3 V

2319101

Proximity Sensor, Open Drain, SOIC, 8 Pins, 1.8 V, 3.3 V

MICROCHIP

PROXIMITY SENSOR, 2 CH, 3.3V, CAP, 8SOIC; IC Output Type:Open Drain; Sensing Distance:-; Sensor Case Style:SOIC; No. of Pins:8Pins; Supply Voltage Min:1.8V; Supply Voltage Max:3.3V; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product

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SI1141-A11-GMR
SI1141-A11-GMR - Integrated Proximity Sensor, 500mm Sense Distance, 1.71V to 3.6V Supply, QFN-10

2422558

Integrated Proximity Sensor, 500mm Sense Distance, 1.71V to 3.6V Supply, QFN-10

SILICON LABS

PROXIMITY/AMBIENT LIGHT SENSOR, QFN-10; Supply Voltage Min:1.71V; Supply Voltage Max:3.6V; Ambient Light Sensor Case Style:QFN; No. of Pins:10Pins; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Range:SI1141 Series; IC Output Ty

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DM160219
DM160219 - Development Kit, MTCH6102 Controller, 9x6 Touchpad Sensor, Integrates Gestures & XY Touch

2425512

Development Kit, MTCH6102 Controller, 9x6 Touchpad Sensor, Integrates Gestures & XY Touch

MICROCHIP

EVAL BOARD, MTCH6102 CAPACITIVE TOUCH; Kit Application Type:Sensing - Touch, Proximity; Silicon Manufacturer:Microchip; Silicon Core Number:PIC16LF1454, MTCH6102; Application Sub Type:Capacitive Touch; Kit Contents:Touchpad Controller Board PIC16LF1454 &

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    SI1102-A-GMR
    SI1102-A-GMR - Proximity Sensor, Digital, 500 mm, Module, 8 Pins, 2.2 V, 5.25 V

    2422556

    Proximity Sensor, Digital, 500 mm, Module, 8 Pins, 2.2 V, 5.25 V

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    OPTICAL PROXIMITY DETECTOR, ODFN-8; IC Output Type:Digital; Sensing Distance:500mm; Sensor Case Style:Module; No. of Pins:8Pins; Supply Voltage Min:2.2V; Supply Voltage Max:5.25V; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product R

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    SI1143-A11-GMR - Integrated Proximity Sensor, 500mm Sense Distance, 1.71V to 3.6V Supply, QFN-10

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    PROXIMITY/AMBIENT LIGHT SENSOR, QFN-10; Supply Voltage Min:1.71V; Supply Voltage Max:3.6V; Ambient Light Sensor Case Style:QFN; No. of Pins:10Pins; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Range:SI1141 Series; IC Output Ty

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    VL6180XV0NR/1
    VL6180XV0NR/1 - Integrated Proximity Sensor, 100mm Sense Distance, 2.6V to 3V Supply, Optical LGA-12

    2462820

    Integrated Proximity Sensor, 100mm Sense Distance, 2.6V to 3V Supply, Optical LGA-12

    STMICROELECTRONICS

    PROXIMITY MODULE, DIGITAL, LGA-12; Supply Voltage Min:2.6V; Supply Voltage Max:3V; Ambient Light Sensor Case Style:Optical LGA; No. of Pins:12Pins; Operating Temperature Min:-40°C; Operating Temperature Max:85°C; Product Range:VL6180X Series; SVHC:No SVH

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    ADUX1020-EVAL-SDP
    ADUX1020-EVAL-SDP - Evaluation Board, ADUX1020 Photometric Sensor, Gesture and Proximity

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    ANALOG DEVICES

    EVAL BOARD, GESTURE & PROXIMITY SENSOR; Kit Application Type:Sensor; Silicon Manufacturer:Analog Devices; Silicon Core Number:ADUX1020; Application Sub Type:Gesture & Proximity Sensor; Kit Contents:Eval Board ADUX1020, ADUX1020-EVAL-MCM/ADUX1020-EVAL-SMA

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    EVAL-AD7150EBZ
    EVAL-AD7150EBZ - Evaluation Board, AD7150 2-Channel Capacitance Converter for Proximity Sensing, Ultra Low Power

    2378283

    Evaluation Board, AD7150 2-Channel Capacitance Converter for Proximity Sensing, Ultra Low Power

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    EVALUATION MODULE, DATA CONVERTER; Kit Application Type:Data Converter; Silicon Manufacturer:Analog Devices; Silicon Core Number:AD7150; Application Sub Type:Proximity Sensor; Kit Contents:Eval Kit AD7150, Software CD; Product Range:AD7150 Series; SVHC:N

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