ISL29044AIROMZ-T7

ISL29044AIROMZ-T7 Datasheet

ISL29044A

Part	Datasheet
ISL29044AIROMZ-T7	ISL29044AIROMZ-T7 (pdf)

PDF Datasheet Preview
ISL29044A Low Power Ambient Light and Proximity Sensor with Internal IR-LED and Digital Output KEY FEATURES • Internal LED + Sensor = complete solution • Works under all light sources including sunlight • Dual ADCs measure ALS/Prox concurrently • <1.0uA Supply current when powered down • Temperature compensated • Pb-Free RoHS compliant Intelligent and Flexible Interrupts • Independent ALS/Prox interrupt thresholds • Adjustable interrupt persistency • 1/4/8/16 consecutive triggers required before interrupt TYPICAL DIAGRAM Request Full Data Sheet ENLARGE + DESCRIPTION The ISL29044A is an integrated ambient and infrared light-to-digital converter with a built-in IR LED and I2C Interface SMBus Compatible . This device uses two independent ADCs for concurrently measuring ambient light and proximity in parallel. The flexible interrupt scheme is designed for minimal microcontroller utilization. For ambient light sensor ALS data conversions, an ADC converts photodiode current with a light sensitivity range up to 3200Lux in 100ms per sample. The ADC rejects 50Hz/60Hz flicker noise caused by artificial light sources. For proximity sensor Prox data conversions, the built-in driver turns on an internal infrared LED and the proximity sensor ADC converts the reflected IR intensity to digital. This ADC rejects ambient IR noise such as sunlight and has a 547us conversion time. The ISL29044A provides low power operation of ALS and proximity sensing with a typical 133uA normal operation current 108uA for sensors and internal circuitry, ~25uA for LED with 220mA current pulses for a net 100us, repeating every 800ms or under . The ISL29044A uses both a hardware pin and software bits to indicate an interrupt event has occurred. An ALS interrupt is defined as a measurement that is outside a set window. A proximity interrupt is defined as a measurement over a threshold limit. The user may also require that both ALS/Prox interrupts occur at once, up to 16 times in a row before activating the interrupt pin. The ISL29044A is designed to operate from 2.25V to 3.63V over the -40°C to +85°C ambient temperature range. It is packaged in a clear, lead-free 8 Ld ODFN package. APPLICATIONS • Display and keypad dimming adjustment and proximity sensing for • Mobile devices Smart phone, PDA, GPS • Computing devices Laptop PC, Netbook, Tablet PC • Consumer devices LCD-TV, digital picture frame, digital camera • Industrial and medical light and proximity sensing Follow Us Legal \| Privacy \| Investor Relations \| Feedback \| Site Map Intersil Americas LLC 6/10/2013

PDF Datasheet Preview

ISL29044A

Low Power Ambient Light and Proximity Sensor with Internal IR-LED and Digital Output

KEY FEATURES
• Internal LED + Sensor = complete solution
• Works under all light sources including sunlight
• Dual ADCs measure ALS/Prox concurrently
• <1.0uA Supply current when powered down
• Temperature compensated
• Pb-Free RoHS compliant

Intelligent and Flexible Interrupts
• Independent ALS/Prox interrupt thresholds
• Adjustable interrupt persistency
• 1/4/8/16 consecutive triggers required before interrupt

TYPICAL DIAGRAM

Request Full Data Sheet ENLARGE +

DESCRIPTION The ISL29044A is an integrated ambient and infrared light-to-digital converter with a built-in IR LED and I2C Interface SMBus Compatible . This device uses two independent ADCs for concurrently measuring ambient light and proximity in parallel. The flexible interrupt scheme is designed for minimal microcontroller utilization.

For ambient light sensor ALS data conversions, an ADC converts photodiode current with a light sensitivity range up to 3200Lux in 100ms per sample. The ADC rejects 50Hz/60Hz flicker noise caused by artificial light sources.

For proximity sensor Prox data conversions, the built-in driver turns on an internal infrared LED and the proximity sensor ADC converts the reflected IR intensity to digital. This ADC rejects ambient IR noise such as sunlight and has a 547us conversion time.

The ISL29044A provides low power operation of ALS and proximity sensing with a typical 133uA normal operation current 108uA for sensors and internal circuitry, ~25uA for LED with 220mA current pulses for a net 100us, repeating every 800ms or under .

The ISL29044A uses both a hardware pin and software bits to indicate an interrupt event has occurred. An ALS interrupt is defined as a measurement that is outside a set window. A proximity interrupt is defined as a measurement over a threshold limit. The user may also require that both ALS/Prox interrupts occur at once, up to 16 times in a row before activating the interrupt pin.

The ISL29044A is designed to operate from 2.25V to 3.63V over the -40°C to +85°C ambient temperature range. It is packaged in a clear, lead-free 8 Ld ODFN package.

APPLICATIONS
• Display and keypad dimming adjustment and proximity sensing for
• Mobile devices Smart phone, PDA, GPS
• Computing devices Laptop PC, Netbook, Tablet PC
• Consumer devices LCD-TV, digital picture frame, digital camera
• Industrial and medical light and proximity sensing

Follow Us Legal | Privacy | Investor Relations | Feedback | Site Map

Intersil Americas LLC
6/10/2013

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ISL29044AIROMZ-T7 Datasheet file may be downloaded here without warranties.

Datasheet ID: ISL29044AIROMZ-T7 639157