Proximity Sensor ICs

Proximity Sensor ICs are used for object detection within a defined distance of the sensor. The proximity sensor sits within a circuit and provides output signals to trigger other functions. Proximity sensor ICs (integrated circuits) are components which are to be designed into PCBs.

Where are they used?
Proximity sensors ICs are designed into circuits for various non-contact sensing applications. They are often used in machine automation, mobile phones, proximity alarm systems, parking sensors as well as in military applications.

Types of Proximity Sensors
Various proximity sensor ICs are available, using a range of sensing technologies. These detection types benefit various applications depending on the users end goal and the system requirements. Some of the main proximity sensors use inductive, capacitive or infrared sensing depending on their application or sensing environment.

What are inductive proximity sensors?
Inductive sensors are used to detect metallic objects. Using a simple electromagnetic field, the sensor monitors the rise and fall of oscillation when a metallic object comes within the sensing range. This variation is monitored by a threshold circuit that can generate the relevant output signal when triggered. Operating ranges will vary depending on the shape and size of the sensor as well as the types of material expect to be monitored by the sensor.

What are capacitive proximity sensors?
Capacitive sensors can be used for both metal and non-conductive objects. They offer Capacitive sensors use an electrical field to detect objects. Any changes in capacitance in the sensing area are detected by the sensor, which then changes state.

Example of proximity sensing:
Many smartphones today feature proximity sensing. An example of this is when you hold your phone to your ear, the sensor will detect this as an object in close proximity. This detection then triggers the screen to switch off.
Proximity sensors are also used in switches, for example with hand gestures.

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Description Price Sensor Type Maximum Switching Frequency Maximum Output Current Maximum Output Voltage Sensing Distance Switching Mode Output Type Mounting Type Package Type Pin Count Maximum Supply Current Dimensions Height Length
RS Stock No. 178-2948
Mfr. Part No.APDS-9702-020
BrandBroadcom
PHP64.05
Each (On a Reel of 2500)
units
Proximity Sensor - - 0.3 V - Analogue, Digital - Surface Mount QFN 8 - 2 x 2 x 0.5mm 0.5mm 2mm
RS Stock No. 161-2221
Mfr. Part No.EKMC1605112
BrandPanasonic
PHP667.60
Each
units
Pyroelectric Infrared Sensor - 100µA - 5m Digital Digital Through Hole - 3 170 μA 26 x 13.3 x 16.6mm 16.6mm 26mm
RS Stock No. 188-5387
Mfr. Part No.CY8CMBR3110-SX2I
PHP85.68
Each (In a Tube of 48)
units
Capacitive 400 (Clock) MHz -1 (High Level) mA, 10 (Low Level) mA 0.6 (Low Level) V 30cm Analogue PWM Surface Mount SOIC 16 140 mA 9.98 x 3.98 x 1.48mm 1.48mm 9.98mm
RS Stock No. 135-7104
Mfr. Part No.EKMC1603112
BrandPanasonic
PHP626.70
Each
units
Pyroelectric Infrared Sensor - 100µA 0.5 V 12m Digital Digital Through Hole - 3 170 μA 11 (Base) x 20.2 (H) mm, 22 (Top) mm 20.2mm -
RS Stock No. 161-2220
Mfr. Part No.EKMC1605111
BrandPanasonic
PHP722.40
Each
units
Pyroelectric Infrared Sensor - 100µA - 5m Digital Digital Through Hole - 3 170 μA 26 x 13.3 x 16.6mm 16.6mm 26mm
RS Stock No. 161-2200
Mfr. Part No.EKMC1605111
BrandPanasonic
PHP642.48
Each (In a Box of 50)
units
Pyroelectric Infrared Sensor - 100µA - 5m Digital Digital Through Hole - 3 170 μA 26 x 13.3 x 16.6mm 16.6mm 26mm
RS Stock No. 124-2976
Mfr. Part No.CY8CMBR3116-LQXI
PHP134.564
Each (In a Pack of 5)
units
Proximity Sensor - 85mA 0.6 (Low Level) V 30cm Analogue Open Drain Surface Mount QFN 24 25 mA 4 x 4 x 0.55mm 0.55mm 4mm
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