Thin integrated optical proximity sensor targets mobile applications

Avago's APDS-9120 proximity sensor combines a built-in signal conditioning IC, emitter and detector into a single package, which offers both analog and digital output options for easy installation. Applications include mobile phones, PDAs, handheld games, and notebook computers.

With a surface mountable package size measuring 1.1 mm thick by 4.4 mm by 4.4 mm, the APDS-9120 offers many technical features required by mobile phone manufacturers such as an extended detection range, and optimum signal conditioning circuitry. Additionally, the APDS-9120 proximity sensor eliminates the need for an external LED driver, signal filtering and amplification, as well as sunlight and ambient light immunity. It also incorporates a stuck high protection circuit to preserve LED life.

Competitively priced, the APDS-9120 includes a shutdown mode to conserve power consumption and extend battery life in portable devices. The pulse width, burst rate, duty cycle and frequency can be controlled to further minimize power consumption. With an external limiting resistor, the LED current of this optical proximity sensor can be configured to a variety of levels.

Key features include patented ambient light cancellation circuit, enabling operation up to 100K lux to prevent false triggering. It also offers one of the longest detection distances available—typical detection distance of 30 mm is based on Kodak 18 percent grey card. Sensing capabilities are adjustable from 10kHz to 1 MHz to provide faster detector response time. The APDS-9120's shutdown current is 1µA maximum, and its supply voltage is 2.4V to 3.6 V.

Pricing: $1.80 in minimum quantities.
Availability: Samples and production quantities are available now through Avago's direct sales channel and worldwide distribution partners.
Datasheet: click here.

Avago Technologies, www.avagotech.com