LX1973AIDU Microsemi Analog Mixed Signal Group, LX1973AIDU Datasheet

VISIBLE LIGHT SENSOR 8MSOP

LX1973AIDU

Manufacturer Part Number
LX1973AIDU
Description
VISIBLE LIGHT SENSOR 8MSOP
Manufacturer
Microsemi Analog Mixed Signal Group
Datasheet

Specifications of LX1973AIDU

Wavelength
580nm
Output Type
Current
Package / Case
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
For Use With
LX1973B EVAL KIT - KIT EVALUATION FOR LX1973
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LX1973AIDU-TR
Manufacturer:
MSC
Quantity:
21 820
Copyright © 2005
Rev. 1.2, 2009-05-26
range light sensor with a very low
dark current that is optimized for
sensing low level light signals that
typically
darkening outdoor ambient lighting.
The LX1973A has been optimized for
automotive systems such as headlamp
brightness control or rear view mirror
contrast control. Its radical (fractional
exponent) response when interfaced
with an 8 bit DAC can detect levels
down to 0.001 lux or levels as high as
500 lux.
integrated
emulates the human eye so it ignores
light such as infrared which emits
energy but doesn’t aid vision. This
eliminates the need for an Infrared
filter required with competitor’s light
sensors.
IMPORTANT: For the most current data, consult MICROSEMI’s website:
Protected By US Patents: 6,787,757; Patents Pending
The LX1973A is a wide dynamic
The
TM
spectral
occur
light
response
under
-40 to 85
sensor
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
T
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1973AIDU-TR)
A
(°C)
LX1973A
dark
D E S C R I P T I O N
Part
of
5V
closely
DR
the
or
consists
Microsemi’s Best Eye™ processing that
provides a nearly perfect photopic light
wavelength response curve. The sensor
output feeds into a wide dynamic range
compression amplifier that provides
accurate resolution over five decades of
ambient light. The integrated dark
current cancellation circuit facilitates
accurate sensing of light below 0.01
lux. The current source output of the
LX1973A can be gain scaled using one
external resistor.
to an initial accuracy of 5% at room
temperature and a light level of 10lux.
Accuracy of 10% is maintained over the
full temperature range (-40 to +85°C).
Plastic MSOP Reversed Form
8-Pin
The LX1973A internal circuitry
The LX1973A is internally trimmed
RoHS Compliant / Pb-free
P R O D U C T H I G H L I G H T
R
P A C K A G E O R D E R I N F O
LX1973AIDR
LOAD
V
Analog Mixed Signal Group
OUT
of
®
Microsemi
http://www.microsemi.com
a
4.0
3.0
2.0
1.0
0.0
0.001
diode
LX1973A Response
0.01
Ambient Light (in lux)
array
0.1
Automotive Light Sensor
DU
with
P
RODUCTION
1
RoHS Compliant / Pb-free
LX1973AIDU
Plastic MSOP
8-pin
10
100
Nearly Perfect Best Eye™
Human Eye Spectral Response
25C Dark Current <0.005 lux
5 Decades Compressed Output
10% Accuracy Over
Temperature
Scalable Output Voltage
No Optical Filters Needed
Auto headlamp control
Auto mirror contrast control
D
ATA
K E Y F E A T U R E S
A P P L I C A T I O N S
S
HEET
LX1973A
Page 1

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LX1973AIDU Summary of contents

Page 1

... LX1973A DR T (° Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1973AIDU-TR) Copyright © 2005 Rev. 1.2, 2009-05-26 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® Automotive Light Sensor The LX1973A internal circuitry ...

Page 2

................................................................................................................. -0 SNK/SRC (Output Compliance Voltage)........................................... -0 SNK/SRC (Maximum Output ...

Page 3

TM Unless otherwise specified, the following specifications apply over the operating ambient temperature -40°C otherwise noted and the following test conditions: See Note 1, V Parameter Operational Voltage Supply Current Power Supply Rejection Ratio Peak Spectral Response Infrared Response Light ...

Page 4

White Part OUT LED GND LX1973A Figure 2 – Operational Voltage Measurement Circuit To µP Copyright © 2005 Rev. 1.2, 2009-05-26 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® Automotive Light Sensor ...

Page 5

ENERAL ESCRIPTION The LX1973A produces an output current that is sensitive to the level of ambient light that falls onto the photosensitive area of the IC package. The sensitivity is amplified and compressed to provide ratio metric ...

Page 6

500 450 400 350 300 250 200 150 100 50 0 0.001 0.01 0.1 1 Point Source Light (lux ...

Page 7

TM DU 8-Pin Miniature Shrink Outline Package (MSOP) Top View Side Views DR 8-Pin Miniature Shrink Outline Package (MSOP) Reversed Form 0.12 e Copyright © 2005 ...

Page 8

TM Package Land Pattern OUT Copyright © 2005 Rev. 1.2, 2009-05-26 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® Automotive Light Sensor P RODUCTION ...

Page 9

Ø 1.55mm ±0.05 0.3mm ±0.05 5.5mm ±0.1 1.0mm ±0.1 1.3mm ...

Page 10

TM PRODUCTION DATA – Information contained in this document is proprietary to Microsemi and is current as of publication date. This document may not be modified in any way without the express written consent of Microsemi. Product processing does not ...

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