SOURCE: Intersil

April 28, 2008 11:31 ET

Industry's Easiest-to-Use Light-to-Digital Sensor ICs Extend Battery Life and Deliver Enhanced Functionality

Intersil ISL29010 and ISL29013 Light Sensors Feature Gain Selection, Near-Human Eye Spectral Response for IR Radiation Rejection, Low Supply Current and I2C Interface

MILPITAS, CA--(Marketwire - April 28, 2008) - Intersil Corporation (NASDAQ: ISIL), a world leader in the design and manufacture of high-performance analog semiconductors, today introduced the industry's easiest-to-use light-to-digital sensors, designed to increase battery life and deliver enhanced functionality and performance in mobile, computer and consumer electronic products.

The new ISL29010 and ISL29013 are highly accurate sensors that measure and digitize the value of ambient light and then allow access to that information through a standard I2C interface. This provides a simple way to improve efficiency and functionality in end products by enabling applications to automatically adjust to varying light conditions. Performance advantages include extended battery life from keypad and display dimming in mobile devices as well as increased performance in displays for LCD panels, digital picture frames and digital cameras.

The spectral response of these devices attenuates unwanted IR radiation to provide accurate light measurement even in extreme low-light conditions. This is accomplished by integrating a full light-to-digital solution that includes specially tuned photodiodes to remove all unwanted IR noise, a signed 15-bit integrating ADC that allows for low-light sensitivity and automatic noise cancellation.

The ISL29010 and ISL29013 feature gain selection, giving designers the ability to select the dynamic range and low-light sensitivity that best matches the needs of their application. This software-enabled functionality to choose between low-light sensitivity and wider dynamic range ensures maximum performance as well as unmatched flexibility.

The devices operate on 2.5V to 3.3V and require supply current of just 250 microamps, lower than any available light-to-digital sensor ICs. In addition, a power-down mode can be controlled by software via the I2C interface, reducing power consumption to less than 1 microamp.

Both versions incorporate a signed 15-bit ADC to convert small current signals in the presence of AC periodic noise. The ADC provides users with flexible integration or conversion time through either internal or external modes and can reject 50Hz and 60Hz flicker caused by external sources. Users can program the lux range for optimized counts/lux.

As an added feature, the ISL29013 includes an interrupt pin so users can set threshold values to detect specific low- or high-light thresholds. The ISL29010 includes an address selection pin so two light sensors can be used on the same I2C bus.

Pricing and Availability

The ISL29010 and ISL29013 are available now in 6-lead ODFN packages (2mm x 2.1mm) and are priced at $1.20 each in 1,000-piece quantities.

For more ISL29010 information:,1477,ISL29010.html

For more ISL29013 information:,1477,ISL29013.html

Note to editors: To view a high-resolution downloadable photo of the ISL29010, visit Intersil's photo room at:

About Intersil's Ambient Light Sensors

Intersil's portfolio of light-to-analog and light-to-digital sensors provides the ideal method for monitoring ambient light for brightness control in computing and handheld devices. Intersil's integrated IC light sensors have superior sensitivity and power consumption when compared to traditional stand-alone photodiodes, photoresistors and phototransistors. These devices can be used for power-saving control or in any application that requires backlight control, including mobile phones, PDAs, notebook computers, monitors, flat panel TV displays, keyboard backlighting, automotive cluster gauges, automotive panel displays, web pads and both video and still cameras. All of Intersil's light sensors are compensated for drift over time and temperature and in addition to brightness control can be used for motion-sensing, intrusion-detection and various other industrial and medical sensing applications such as oximeters and blood glucose systems. To learn more, visit Intersil's Display ICs page at

About Intersil

Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, other handheld systems, and notebooks. Intersil's product families address power management functions and analog signal processing functions. Intersil products include ICs for battery management, hot-swap and hot-plug controllers, linear regulators, power sequencers, supervisory ICs, bridge drivers, PWM controllers, switching DC/DC regulators and power MOSFET drivers; optical storage laser diode drivers; DSL line drivers; video and high-performance operational amplifiers; data converters; interface ICs; analog switches and multiplexers; crosspoint switches; voice-over-IP devices; and ICs for military, space and radiation-hardened applications. For more information about Intersil or to find out how to become a member of our winning team, visit the Company's web site and career page at

Contact Information

  • Media Contact
    Rob Purdie
    Senior Marketing Representative
    Intersil Corporation
    (321) 724-7688