Ambient Light Sensor with Dark Current Compensation

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Overview

The NOA1211 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 dissipation of this chip is less than 8 uA 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 2V to 5.5V. The NOA1211 employs proprietary CMOS image sensing technology from ON Semiconductor, including built-in dynamic dark current compensation to provide large signal to noise ratio (SNR) and wide dynamic range (DR) over the entire operating temperature range. The photopic optical filter provides a light response similar to that of the human eye. Together the photopic light response and dark current compensation insures accurate light level detection.

  • Display power management
  • Cell phones, PDAs, MP3 players, GPS
  • Internet Mobile Devices (IMD)
  • Cameras, video recorders
  • Mobile devices with displays or backlit keypads
  • Photopic light response
  • Dark current compensation
  • 0 lux to over 100K lux range
  • Power down mode
  • Less than 8uA power at 0 lux
  • Selectable gain ranges
  • Linear response over full range

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Reference Price

NOA1211CUTAG

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Obsolete

CAD Model

Pb

A

H

P

CUDFN-6

5

260

REEL

2500

N

14

Analog

2

5.5

-40

85

Price N/A

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