LX1972IBC-TR

LX1972IBC-TR Datasheet

LX1972 VISIBLE LIGHT

Part	Datasheet
LX1972IBC-TR	LX1972IBC-TR (pdf)

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LX1972 VISIBLE LIGHT SENSOR New Product Information and Sales Kit Manufactured by Microsemi Integrated Products Garden Grove Telephone 714-898-8121 More than solutions enabling possibilities .COM LX1972 Visible Light Sensor INTRODUCTION CONFIDENTIAL INFORMATION This new product introduction guide is intended for use only by Microsemi’s sales people and authorized representatives and distributors. This material can be adapted for customer presentations, but the sales strategy and summary [pricing, availability, etc.] is confidential and should not be shown to customers The LX1972 is a low cost silicon light sensor with spectral response that closely emulates the human eye. Patented circuitry produces peak spectral response at 520nm, with IR response less than ±5%, of the peak response, above 900nm. The photo sensor is a PIN diode array with a linear, accurate, and very repeatable current transfer function. High gain current mirrors on the chip multiply the PIN diode photo-current to a sensitivity level that can be voltage scaled with a standard value external resistor. Output current from this easy to use two-pin device can be used directly or converted to a voltage by placing it in series with a single resistor at one of its two pins. This resistor typically in the range of 10K to 100K and the power supply value determine the dynamic range. Typically, the LX1972 needs only 1.8V of headroom to operate at the 1000 Lux of illumination. Internal temperature compensation allows dark current to be kept below 200nA over the full specification temperature range -40 to +85°C , providing high accuracy at low light levels. Usable ambient light conditions range is from 1 to more than 5000 Lux. The LX1972 is optimized for controlling back lighting systems in low cost consumer products such as LCD TV, portable computers, and digital cameras. The LX1972 is available in a clear two pin 1206 package. SUMMARY The LX1972 is a small, cost effective solution to sensing visible light. SALES KIT New Product Information and Sales Kit .COM LX1972 Visible Light Sensor KEY PRODUCT INFORMATION BLOCK DIAGRAM SPECTRAL RESPONSE Current Amp VSS Figure 1 Block Diagram Figure 2 LX1972 Spectral Response KEY FEATURES Approximate Human Eye Spectral Response Low IR Sensitivity Highly Accurate & Repeatable Output Current vs. Light Voltage Scalable Temperature Stable Integrated High Gain Photo Current Amplifiers No Optical Filters Needed Low Dark Leakage Current 2-pin 1206 package PDA Notebook PC LCD TV Backlight Systems Tablet PC Mobile Phones Digital Cameras SALES KIT New Product Information and Sales Kit .COM BACKLIGHT LX1972 Visible Light Sensor VIN GND SHDN 3.3V L1 10µH D1 UPS5817 R1 100K C1 4.7µF R7 24.9K

PDF Datasheet Preview

LX1972 VISIBLE LIGHT

SENSOR

New Product Information and Sales Kit

Manufactured by Microsemi

Integrated Products Garden Grove

Telephone 714-898-8121

More than solutions enabling possibilities
.COM

LX1972

Visible Light Sensor

INTRODUCTION

CONFIDENTIAL INFORMATION This new product introduction guide is intended for use only by Microsemi’s sales people and authorized representatives and distributors. This material can be adapted for customer presentations, but the sales strategy and summary [pricing, availability, etc.] is confidential and should not be shown to customers

The LX1972 is a low cost silicon light sensor with spectral response that closely emulates the human eye. Patented circuitry produces peak spectral response at 520nm, with IR response less than ±5%, of the peak response, above 900nm. The photo sensor is a PIN diode array with a linear, accurate, and very repeatable current transfer function. High gain current mirrors on the chip multiply the PIN diode photo-current to a sensitivity level that can be voltage scaled with a standard value external resistor. Output current from this easy to use two-pin device can be used directly or converted to a voltage by placing it in series with a single resistor at one of its two pins. This resistor typically in the range of 10K to 100K and the power supply value determine the dynamic range. Typically, the LX1972 needs only 1.8V of headroom to operate at the 1000 Lux of illumination. Internal temperature compensation allows dark current to be kept below 200nA over the full specification temperature range -40 to +85°C , providing high accuracy at low light levels. Usable ambient light conditions range is from 1 to more than 5000 Lux. The LX1972 is optimized for controlling back lighting systems in low cost consumer products such as LCD TV, portable computers, and digital cameras. The LX1972 is available in a clear two pin 1206 package.

SUMMARY The LX1972 is a small, cost effective solution to sensing visible light.

SALES KIT

New Product Information and Sales Kit
.COM

LX1972

Visible Light Sensor

KEY PRODUCT INFORMATION

BLOCK DIAGRAM

SPECTRAL RESPONSE

Current Amp

VSS Figure 1 Block Diagram

Figure 2 LX1972 Spectral Response

KEY FEATURES

Approximate Human Eye Spectral Response Low IR Sensitivity Highly Accurate & Repeatable Output Current vs. Light Voltage Scalable Temperature Stable Integrated High Gain Photo Current Amplifiers No Optical Filters Needed Low Dark Leakage Current 2-pin 1206 package

PDA Notebook PC LCD TV Backlight Systems Tablet PC Mobile Phones Digital Cameras

SALES KIT

New Product Information and Sales Kit
.COM

BACKLIGHT

LX1972

Visible Light Sensor

VIN GND SHDN
3.3V

L1 10µH

D1 UPS5817

R1 100K

C1 4.7µF

R7 24.9K

More datasheets: 91614-312 | 91614-324 | 91614-306 | 91614-305 | 91614-307 | 91614-311 | 91614-320 | CA06EW28-20SB02 | DE9PVK87 | MIKROE-2387

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Datasheet ID: LX1972IBC-TR 649014