Datasheet NOA1212 (ON Semiconductor)

NOA1212 Ambient Light Sensor with Dark Current Compensation
Description
The NOA1212 is a very low power ambient light sensor (ALS) with an analog current output and a power down mode to conserve power. Designed primarily for handheld device applications, the active power
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dissipation of this chip is less than 8 mA at dark and its quiescent current consumption is less than 200 pA in power down mode. The device can operate over a very wide range of voltages from 2 V to 5.5 V. The NOA1212 employs proprietary CMOS image sensing technology from ON Semiconductor, including built−in dynamic dark 1 current compensation to provide large signal to noise ratio (SNR) and
CUDFN6
wide dynamic range (DR) over the entire operating temperature range.
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The photopic optical filter provides a light response similar to that of
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the human eye. Together the photopic light response and dark current compensation insures accurate light level detection.
PIN ASSIGNMENT Features
• Senses Ambient Light and Provides an Output Current Proportional VDD 1 6 IOUT to the Ambient Light Intensity • Photopic Spectral Response • VSS 2 5 NC Dynamic Dark Current Compensation • Three Selectable Output Current Gain Modes in Approximately 10x GB1 3 4 GB2 Steps • Power Down Mode (Top View) • Less than 18 mA at 100 lux Active Power Consumption in Medium Gain Mode (Less than 8 mA at Dark) • Less than 200 pA Quiescent Power Dissipation in Power Down
ORDERING INFORMATION
Mode at All Light Levels
Device Package Shipping
† • Linear Response Over the Full Operating Range NOA1212CUTAG* CUDFN6 2500 / • Senses Intensity of Ambient Light from ~0 lux to Over 100,000 lux (Pb−Free) Tape & Reel • Wide Operating Voltage Range (2 V to 5.5 V) †For information on tape and reel specifications, • including part orientation and tape sizes, please Wide Operating Temperature Range (−40°C to 85°C) refer to our Tape and Reel Packaging Specifications • Drop−in Replacement Device in 1.6 x 1.6 mm Package Brochure, BRD8011/D. • *Temperature Range: −40°C to 85°C. These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant
Applications
Vin = 2 to 5.5V V • Saves display power in applications such as: GS2 GS1 ♦ Cell Phones, PDAs, MP3 players, GPS C1 1μ 1 ♦ Cameras, Video Recorders hn VDD GB2 GB1 h ♦ Mobile Devices with Displays or Backlit Keypads ♦ Laptops, Notebooks, Digital Signage Photo Amp ADC Diode IOUT ♦ LCD TVs and Monitors, Digital Picture Frames RL R C L L C IC2 ♦ Automobile Dashboard Displays and Infotainment VSS NOA1212 ♦ LED Indoor/Outdoor Residential and Street Lights IC1
Figure 1. Typical Application Circuit
© Semiconductor Components Industries, LLC, 2015
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Publication Order Number:
November, 2017 − Rev. 4 NOA1212/D