RPR-0720
Miniature Proximity Sensor
RPR-0720
Miniature Proximity Sensor
RPR-0720 is a digital optical proximity sensor (PS) module equipped with infrared VCSEL (IrVCSEL) and IC with I2C interface. This IC has a built-in infrared receiver and VCSEL driver. Proximity sensor (PS) detects the human or object approaching by the reflection of IrVCSEL light.
Product Detail
Specifications:
Interface
Digital（I²C）
Integrated Capabilities
VCSEL Drvr. PS
Supply Voltage VDD/VCC[V]
1.7~3.6
Supply Voltage LEDA/VCSELA[V]
2.7~4.5
Temperature Range[°C]
-30 to 85
Focus Length (Recommended Operating Distances)[mm]
(<5)
Emitter WaveLength (Typ.)[nm]
940
Package Size [mm]
2.0×1.0 (t=0.55)
Package Type
SMD
Features:
- Compatible to I²C bus interface (f/s mode support)
- Compatible to 1.8V or 3.3V logic interface
- Directly connected to the IrVCSEL input power supply battery
（VVCSELA Max.4.5V@VCC=1.8V） - Detection range of proximity sensor is around 1 - 15mm (adjustable by I²C)
- Built-in constant current configurable IrVCSEL driver
- Equipped with Ambient light canceling function
- Low light leakage inside the product using micro slit
Supporting Information
Overview
The RPR-0720 is an optical sensor module that adopts a VCSEL featuring higher directivity than LEDs as the light emitting element and a sensor IC for the light receiving element. Compact size is achieved by optimizing the module structure using in-house chips, reducing area by approximately 78% compared to conventional products. At the same time, the wide input voltage range (2.7V to 4.5V) of the built-in VCSEL eliminates the need for a peripheral voltage booster circuit (i.e. consisting of a power supply IC, three capacitors, and one inductor) when using a Li-ion battery, contributing to greater space savings that leads to smaller applications and increased battery capacity. This makes it suitable not only for sensing attachment/detachment, but also for detecting various conditions in a wide range of applications.
Application Examples
Suitable for a wide range of applications that use light reflection to detect conditions.
◆ Attachment/detachment detection of wireless ear buds, smart watches, gaming console controllers, VR headsets, and the like
◆ Paper detection in printers, copiers, shredders, and other office automation devices
◆ E-cigarette cartridge/liquid detection
◆ Detecting various conditions in smartphones and laptops
