Product category:
Optoelectronic Sensors, Switches and Receivers
News Release from: Melexis | Subject: MLX75305 SensorEyeC
Edited by the Electronicstalk Editorial
Team on 14 May 2008
Sensor IC provides 15-year lifetime
This MLX75305 is an integrated sensor IC, which means that the photodiode, transimpedance amplifier and linear voltage output stage are all included in the sensor chip.
Melexis has released the MLX75305 Light-to-Voltage SensorEyeC This is the second member of the SensorEyeC series of optical sensors designed for high-volume automotive, industrial and consumer applications
This article was originally published on Electronicstalk on 17 Oct 2003 at 8.00am (UK)
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The light sensor's output gives a voltage that varies linearly with incident light.
This MLX75305 is an integrated sensor IC, which means that the photodiode, transimpedance amplifier and linear voltage output stage are all included in the sensor chip.
This guarantees stable light responsivity over time and over temperature and improves noise behaviour when compared to designs that use discrete photodiodes.
It simplifies application design, requires fewer external components and improves quality.
The first SensorEyeC device - the MLX75303 optical switch - was released in April 2008.
SensorEyeC devices are baked in an oven at 150C and remain powered-on during a total test run time of more than 500 hours.
This test accelerates the aging process of the silicon by a factor of 258 for sensor operations at 55C, resulting in an equivalent continuous operating lifetime of more than 132000 hours.
All sensors performed well after the aging test, indicating that their lifetime exceeds 15 years.
"The high-temperature operating lifetime (HTOL) testing is one of many qualification tests we do on our light sensors", says Sam Maddalena, Business Unit Manager Opto Sensors.
Maddalena continues, "Our automotive customers request this kind of reliability evaluation because repairing defects in cars is very expensive and inconvenient for car owners".
"Our customers will benefit tremendously from the low parts per million, temperature independency of the sensor's behaviour and the 260C solder reflow capabilities".
The MLX75305 is suited for measuring ambient light or for controlling LED light in LCD backlight dimming applications.
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