Signal Conditioning IC for Optical Proximity Sensors with Digital I2C Interface

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APDS-9702 is a signal conditioning IC that enhances the performance and robustness of the optical sensors used for proximity or object detection.

APDS-9702 is a single chip solution that consists of an I2C Write function, oscillation circuit, LED driver circuit and sunlight cancellation circuit integrated into a single chip. APDS-9702 has artificial light immunity and is also operational under the sun. Design flexibility is optimized as APDS-9702 can be paired up with an integrated proximity sensor or discrete pair solution.

APDS-9702 can be disabled to maximize power savings and battery life in applications such as portable or battery-operated devices. The LED current of the optical proximity sensors can be configured to different levels using a limiting resistor at the LEDA pin. APDS-9702 also provides user options in frequency, suitable burst rate, comparator threshold setting and burst off period that can reduce power consumption. These low power consumption
features makes it also ideal for low power mobile and handheld devices.

APDS-9702 is capable of operating at voltage supply ranging from 2.4 V to 3.6 V. APDS-9702 has two separate output pins for analog and digital outputs. This provides flexibility to use either the analog or digital output (or both) depending on the requirements of the application.

The device is packaged in 8-pin QFN package measuring
0.55mm(H) x 2mm(W) x 2mm(L).


  • Low power consumption
    • Internal oscillation circuit to drive LED in pulse mode
    • Low shut down current
    • External LED drive-current control
  • Complete shutdown mode
    • Low shutdown current
  • Supply voltage : 2.4 V to 3.6 V
  • Operational in sunlight conditions up to 100klux (with HSDL-9100)
  • Artificial light immunity
  • Analog & Digital output available
    • Built in comparator for digital output
    • Digital output remains Low during object detected.
  • Wide bandwidth Trans-impedance amplifier
  • External capacitor and resistor for integration and gain
  • controls
  • Flexibility to enhance detection distance up to 200mm with HSDL-9100 or further with external discrete pair
  • Small 2mm x 2mm QFN 8-pin package
  • Design flexibility to pair with Broadcom Proximity Sensors or discrete pair solution
  • Lead-free & RoHS Compliant


  • PDA and mobile phones
  • Digital camera
  • Portable and Handheld devices
  • Personal Computers/Notebooks
  • Amusement/Games/Vending Machines
  • Industrial Automation
  • Contactless Switches
  • Sanitary Automation

Lifecycle Status


Substance Compliance

  • RoHS6
    Fully Compliant
Specification Value
Lifecycle Active
Distrib. Inventory Yes
RoHS6 Compliant Y
Package QFN 2mm X 2mm
Max Detection Distance near 0mm - 60mm
Supply Voltage (V) 2.4 - 3.6
Output Analog (with HI/LO digital o/p)