|
|
PDF LX1973B Data sheet ( Hoja de datos )
| Número de pieza | LX1973B | |
| Descripción | Automotive Light Sensor | |
| Fabricantes | Microsemi | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LX1973B (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
|
No Preview Available !
LX1973B
® Automotive Light Sensor
TM
PRODUCTION DATA SHEET
DESCRIPTION
The LX1973B is a wide dynamic The LX1973B internal circuitry
range light sensor with a very low consists of a diode array with
dark current that is optimized for Microsemi’s Best Eye™ processing that
sensing low level light signals that provides a nearly perfect photopic light
typically occur under dark or darkening wavelength response curve. The sensor
outdoor ambient lighting.
output feeds into a wide dynamic range
The LX1973B has been optimized compression amplifier that provides
for automotive systems such as accurate resolution over five decades of
headlamp brightness control or rear ambient light. The integrated dark
view mirror contrast control. Its current cancellation circuit facilitates
radical (fractional exponent) response accurate sensing of light below 0.01
when interfaced with an 8 bit DAC Lux. The current source output of the
can detect levels down to 0.001 Lux LX1973B can be gain scaled using one
or levels as high as 500 Lux.
external resistor.
The spectral response of the The LX1973B is internally trimmed
integrated light sensor closely to an initial accuracy of 5% at room
emulates the human eye so it ignores temperature and a light level of 10 Lux.
light such as infrared which emits Accuracy of 10% is maintained over the
energy but doesn’t aid vision. This full temperature range (-40 to +85ºC).
eliminates the need for an Infrared
filter required with competitor’s light
sensors.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Protected By US Patents: 6,787,757; Patents Pending
KEY FEATURES
Nearly Perfect Best Eye™
Human Eye Spectral Response
Dark Current < 0.0005 Lux (@
25°C)
5 Decades Compressed Output
10% Accuracy Over
Temperature
Scalable Output Voltage
No Optical Filters Needed
APPLICATIONS
Auto Headlamp Control
Auto Mirror Contrast Control
5V
LX1973B Part
PRODUCT HIGHLIGHT
LX1973B Response
4
VOUT
3
2
RLOAD
1
0
0.001
0.01
0.1
1
Am bient Light (lux)
10
100
TA (°C)
-40 to 85
PACKAGE ORDER INFO
PL
Plastic MSOP Domed
8-Pin
PR
Plastic MSOP Domed
8-Pin Reverse Form
RoHS Compliant / Pb-free, NiPdAu Finish
RoHS Compliant / Pb-free, NiPdAu Finish
LX1973BIPL
LX1973BIPR
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1973BIPL-
xxxxx-TR)
Copyright © 2007
Rev. 1.3, 2008-01-11
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
1 page  
LX1973B
® Automotive Light Sensor
TM
PRODUCTION DATA SHEET
APPLICATIONS
GENERAL DESCRIPTION
The LX1973B 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 accuracy across several
decades. The sensitivity function is:
( ) [ ]I
OUT
Iref
P = 1 Lux0.25
×
E
DARK
+E
AMBIENT
0.25
1 Lux 0.25 = 10.25
Iref = 126µA for the Domed Top Package
Iref = 124µA for the Domed Bottom Package
EDARK = dark current equivalent Lux expressed in Lux from a white LED point source.
EAMBIENT = ambient illumination expressed in Lux from a white LED point source.
Copyright © 2007
Rev. 1.3, 2008-01-11
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet LX1973B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LX1973 | Automotive Light Sensor |  Microsemi Corporation |
| LX1973A | Automotive Light Sensor | Microsemi Corporation |
| LX1973B | Automotive Light Sensor | Microsemi |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |