LX1971IDU

LX1971IDU Datasheet

LX1971

Part	Datasheet
LX1971IDU	LX1971IDU (pdf)

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.COM LX1971 Wide Range Visible Light Sensor PRODUCTION DATA SHEET The LX1971 is a new technology light Photo current is first multiplied by an sensor with spectral response that integrated high gain amplifier then the emulates the human eye it is pin to pin square root is taken of the product of the compatible to Microsemi’s LX1970 amplifier and an internal reference current. visible light sensor however with a wider Finally this is further multiplied converted dynamic range. to current and made available at two This device is ideal for monitoring output pins one a current source and the ambient light for the control of artificial other a current sink. lighting, operation of shades, LED These currents can easily be converted signage and display, street lighting, to voltage by adding a single resistor at automotive light sensors and control of either or both outputs. Voltage gain is backlight dimming. It has a unique photo determined by the resistor value typically diode arrangement patents pending with in the 5KΩ to 50KΩ range. a peak response at 520nm while sharply With accurate internal gain amplifiers attenuating both ultra violet and infrared and square root transfer function, design wavelengths. complexity and cost are greatly reduced. The photo sensor is a PIN diode array The LX1971 is available in the Clear 8- with an accurate and very repeatable pin MSOP package. current output. IMPORTANT For the most current data, consult MICROSEMI’s website Protected By U.S. Patents 6,787,757 Patents Pending KEY FEATURES Approximate Human Eye Spectral Response Low IR Sensitivity Highly Accurate & Repeatable Output Current vs. Light Square root transfer function Temperature Stable Integrated High Gain Photo Current Amplifiers Complementary Current Outputs No Optical Filters Needed BENIFITS • Requires no wavelength filters • Insensitive to UV and IR • More than 4 decades usable light range • Enables accurate lighting control systems PRODUCT HIGHLIGHT 4.7uF LX1971 4.7uF VOUT Ambient Light 0.60V Typ 0.45V Typ

PDF Datasheet Preview

.COM

LX1971

Wide Range Visible Light Sensor

PRODUCTION DATA SHEET

The LX1971 is a new technology light Photo current is first multiplied by an
sensor with spectral response that integrated high gain amplifier then the
emulates the human eye it is pin to pin square root is taken of the product of the
compatible to Microsemi’s LX1970 amplifier and an internal reference current. visible light sensor however with a wider Finally this is further multiplied converted
dynamic range.
to current and made available at two

This device is ideal for monitoring output pins one a current source and the
ambient light for the control of artificial other a current sink.
lighting, operation of shades, LED These currents can easily be converted
signage and display, street lighting, to voltage by adding a single resistor at
automotive light sensors and control of either or both outputs. Voltage gain is
backlight dimming. It has a unique photo determined by the resistor value typically
diode arrangement patents pending with in the 5KΩ to 50KΩ range.
a peak response at 520nm while sharply With accurate internal gain amplifiers
attenuating both ultra violet and infrared and square root transfer function, design
wavelengths.
complexity and cost are greatly reduced.

The photo sensor is a PIN diode array The LX1971 is available in the Clear 8-
with an accurate and very repeatable pin MSOP package.
current output.

IMPORTANT For the most current data, consult MICROSEMI’s website Protected By U.S. Patents 6,787,757 Patents Pending

KEY FEATURES

Approximate Human Eye Spectral Response

Low IR Sensitivity Highly Accurate &

Repeatable Output Current vs. Light Square root transfer function Temperature Stable Integrated High Gain Photo Current Amplifiers Complementary Current Outputs No Optical Filters Needed

BENIFITS
• Requires no wavelength filters
• Insensitive to UV and IR
• More than 4 decades usable
light range
• Enables accurate lighting
control systems

PRODUCT HIGHLIGHT
4.7uF

LX1971
4.7uF

VOUT

Ambient Light
0.60V Typ 0.45V Typ

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Datasheet ID: LX1971IDU 649013