Product category:
Optoelectronic Sensors, Switches and Receivers
News Release from: Solid State Supplies | Subject: LX1970
Edited by the Electronicstalk Editorial
Team on 10 March 2003
Sensor keeps displays ahead of ambient
Using a spectral response which emulates the human eye, the new LX1970 technology light sensor answers the constant request for displays which are legible in all ambient light conditions.
Using a spectral response which emulates the human eye, the new LX1970 technology light sensor from Solid State Supplies answers the constant request for displays which are legible in all ambient light conditions Ideally suited to monitoring ambient light for brightness control systems in flat panel displays, the LX1970 has a unique photodiode arrangement with a peak response at 540nm, while sharply attenuating both ultraviolet and infra-red wavelengths without the need for optical filters
This article was originally published on Electronicstalk on 6 Feb 2001 at 8.00am (UK)
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Using a PIN diode array with an accurate linear and very repeatable current transfer action in the photosensor, the photocurrent is multiplied by integrated high-gain amplifiers and is available at current outsource and current sink pinouts.
Having low IR sensitivity and providing repeatable output current versus light, the currents are easily converted to voltage by adding a single resistor at either or both outputs.
Voltage gain is determined by the resistor value typically in the 10 to 50kohm range.
Available in 8-pin MOSP, the LX1970 has internal gain amplifiers to reduce design requirements and cost.
Applications include PDAs, notebook PCs, LCD TVs and tablet PCs.
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