APDS-9702 is a signal conditioning IC that enhances the performance and robustness of optical sensors for proximity or target detection. The device comes in an 8-pin QFN package with dimensions of 0.55mm(H) x 2mm(W) x 2mm(L). APDS-9702 is a single-chip solution that integrates I2C write function, oscillation circuit, LED driver circuit and sunlight offset circuit in one chip.
APDS-9702 pin-out
APDS-9702 has artificial light immunity and can also operate in sunlight. Design flexibility is optimized because the APDS-9702 can be paired with integrated proximity sensors or discrete pair solutions. The APDS-9702 can be disabled to maximize power and battery life savings in applications such as portable or battery powered devices. The LED current of the optical proximity sensor can be configured to different levels using the limiting resistor on the LEDA pin.
APDS-9702 also provides user options such as frequency, appropriate outbreak rate, comparator threshold Settings, and outbreak outage time to reduce power consumption. These low-power features also make it ideal for low-power mobile and handheld devices.The APDS-9702 is capable of operating in the 2.4V to 3.6V voltage range. Has two separate analog and digital output pins. This provides the flexibility to use analog or digital output (or both) depending on the requirements of the application.
APDS-9702 Block Diagram
APDS-9702 Typical Application Circuit
Features
● Low power consumption
- Internal oscillating circuit drives LED pulse mode
- Low turn-off current
- External LED drive current control
● Full shutdown mode
- Low shutdown current
● Power supply voltage: 2.4V ~ 3.6V
● Operating in sunlight conditions of up to 100klux (vshsdl - 9100)
● Artificial photoimmunity
● Analog and digital outputs are available
- Digital output of built-in comparator
- The digital output is still Low when the target is detected.
● Wide band inverse impedance amplifier
● External capacitors and resistors integrate and gain control
● The detection range can be flexibly increased to 200mm external discrete pairs with HSDL-9100 or beyond
● Small 2mm x 2mm QFN 8-pin package
● Design flexibility paired with Avago proximity sensors Or discrete pairs
● Lead-free, RoHS compliant
Applications
● Handheld computers and mobile phones
● Digital camera
● Portable and handheld devices
● Personal computer/laptop computer
● Entertainment/games/vending machines
● Industrial automation
● Non-contact switch
● Hygiene automation
