LX1971, LX1971IDU, LX1972IBCTR Selling Leads, Datasheet
MFG:MSC Package Cooled:SSOP-8 D/C:6+
LX1971, LX1971IDU, LX1972IBCTR Datasheet download
Part Number: LX1971
MFG: MSC
Package Cooled: SSOP-8
D/C: 6+
LX1971, LX1971IDU, LX1972IBCTR
- Table of contents:
Info of LX1971
Info of LX1971IDU
Info of LX1972IBCTR
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About LX1971
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Datasheet: LX1971
File Size: 348972 KB
Manufacturer: MICROSEMI [Microsemi Corporation]
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About LX1971IDU
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Datasheet: LX1971IDU
File Size: 354282 KB
Manufacturer: MICROSEMI [Microsemi Corporation]
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About LX1004
PDF/DataSheet Download
Datasheet: LX1004
File Size: 155181 KB
Manufacturer: MICROSEMI [Microsemi Corporation]
Download : Click here to Download
LX1971 General Description
The LX1971 is a new technology light sensor with spectral response that emulates the human eye; it is pin to pin compatible to Microsemi's LX1970 visible light sensor however with a wider dynamic range.
This device is ideal for monitoring ambient light for the control of artificial lighting, operation of shades, LED signage and display, street lighting, automotive light sensors and control of backlight dimming. It has a unique photo diode arrangement (patents pending) with a peak response at 520nm while sharply attenuating both ultra violet and infrared wavelengths.
The photo sensor is a PIN diode array with an accurate and very repeatable current output.
Photo current is first multiplied by an integrated high gain amplifier then the square root is taken of the product of the amplifier and an internal reference current. Finally this is further multiplied converted to current and made available at two output pins; one a current source and the other a current sink.
These currents can easily be converted to voltage by adding a single resistor at either or both outputs. Voltage gain is determined by the resistor value typically in the 5KΩ to 50KΩ range.
With accurate internal gain amplifiers and square root transfer function, design complexity and cost are greatly reduced. The LX1971 is available in the Clear 8-pin MSOP package.
LX1971 Maximum Ratings
VDD ................................................................................ -0.3 to 6 VDC
SNK/SRC (Output Compliance Voltage)............... -0.3 to VDD + 0.3VDC
SNK/SRC (Maximum Output Current).........................Internally Limited
Operating Temperature Range ..................................... -40 to +85°C
Storage Temperature Range.......................................... -55 to 125°C
Solder Reflow Peak Temperature (Soldering 10 seconds) ........240°C
SNK/SRC (Output Compliance Voltage)............... -0.3 to VDD + 0.3VDC
SNK/SRC (Maximum Output Current).........................Internally Limited
Operating Temperature Range ..................................... -40 to +85°C
Storage Temperature Range.......................................... -55 to 125°C
Solder Reflow Peak Temperature (Soldering 10 seconds) ........240°C
LX1971 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
LX1971 Typical Application
·Requires no wavelength filters
·Insensitive to UV and IR
·More than 4 decades usable light range
·Enables accurate lighting control systems
·Insensitive to UV and IR
·More than 4 decades usable light range
·Enables accurate lighting control systems
LX1971 Connection Diagram
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