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LX1973A 데이터시트 PDF




Microsemi Corporation에서 제조한 전자 부품 LX1973A은 전자 산업 및 응용 분야에서
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부품번호 LX1973A 기능
기능 Automotive Light Sensor
제조업체 Microsemi Corporation
로고 Microsemi Corporation 로고


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LX1973A 데이터시트, 핀배열, 회로
LX1973A
www.DataSheet4U.com
TM ® Automotive Light Sensor
PRODUCTION DATA SHEET
DESCRIPTION
The LX1973A is a wide dynamic The LX1973A 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 wavelength response curve. The sensor
darkening outdoor ambient lighting. output feeds into a wide dynamic range
The LX1973A has been optimized for compression amplifier that provides
automotive systems such as headlamp accurate resolution over five decades of
brightness control or rear view mirror ambient light. The integrated dark
contrast control. Its radical (fractional current cancellation circuit facilitates
exponent) response when interfaced accurate sensing of light below 0.01
with an 8 bit DAC can detect levels lux. The current source output of the
down to 0.001 lux or levels as high as LX1973A can be gain scaled using one
500 lux.
external resistor.
The spectral response of the The LX1973A 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 10lux.
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 +85°C).
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
ƒ Nearly Perfect Best Eye
Human Eye Spectral Response
ƒ 25C Dark Current <0.005 lux
ƒ 5 Decades Compressed Output
ƒ 10% Accuracy Over
Temperature
ƒ Scalable Output Voltage
ƒ No Optical Filters Needed
APPLICATIONS
ƒ Auto headlamp control
ƒ Auto mirror contrast control
5V
LXP1a97rt3A
PRODUCT HIGHLIGHT
LX1973A Response
4.0
3.0
VOUT
RLOAD
2.0
1.0
0.0
0.001
0.01
0.1
1
10
Ambient Light (in lux)
100
TA (°C) DR
-40 to 85
PACKAGE ORDER INFO
Plastic MSOP Reversed Form
Plastic MSOP
8-Pin
DU 8-pin
RoHS Compliant / Pb-free
RoHS Compliant / Pb-free
LX1973AIDR
LX1973AIDU
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1973AIDU-TR)
Copyright © 2005
Rev. 1.1, 2006-12-15
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1




LX1973A pdf, 반도체, 판매, 대치품
LX1973A
www.DataSheet4U.com
TM ® Automotive Light Sensor
PRODUCTION DATA SHEET
TEST CIRCUITS
White
LED
VDD
VDD
PaOrtUT
GND
LX1973A
VOUT
RLOAD
Figure 2 – Operational Voltage Measurement Circuit
VDD
White
LED
810nm
VDD
PaOrtUT
GND
VOUT
RLOAD
LX1973A
Figure 3 – IR Sensitivity Measurement Circuit
To µP
APPLICATION CIRCUITS
5V
5V LX1P9a7rt3A
LX1800
SCL
VDD
SCD REF
Part
GND
AIN
ADR AOUT
2.5V
DAC/ADC
BRT
HEADLAMP
CONTROLLER
Figure 4 – Typical Application
10K 1µF
LAMP
Copyright © 2005
Rev. 1.1, 2006-12-15
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4

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LX1973A 전자부품, 판매, 대치품
LX1973A
www.DataSheet4U.com
TM ® Automotive Light Sensor
PRODUCTION DATA SHEET
PACKAGE DIMENSIONS
DU
8-Pin Miniature Shrink Outline Package (MSOP)
D
Top View
8 7 65
E1
12 3 4
Se
PIN # NAME
1 VDD
2 N.C.
3 N.C.
4 OUT
5 N.C.
6 N.C.
7 N.C.
8 VSS
E
A cΘ
A1 b
L
Side Views
L1
Dim
A
A1
b
c
D
e
E
E1
L
L1
S
Θ
MILLIMETERS
MIN MAX
– 1.10
0.05 0.15
0.26 0.41
0.13 0.23
2.90 3.10
0.65 BSC
4.75 5.05
2.90 3.10
0.41 0.71
0.95 BSC
0.525 BSC
INCHES
MIN MAX
– 0.043
0.002 0.006
0.010 0.016
0.005 0.009
0.114 0.122
0.025 BSC
0.187 0.198
0.114 0.122
0.016 0.028
0.037 BSC
0.021 BSC
DR 8-Pin Miniature Shrink Outline Package (MSOP) Reversed Form
D
E
b
A1
A
e
c
0.12
L1
L
Ø
MILLIMETERS
INCHES
Dim MIN MAX MIN MAX
A - 1.100 - 0.043
A1 0.050 0.150 0.002 0.006
b 0.280 0.380 0.011 0.015
C 0.130 0.230 0.005 0.009
D 2.900 3.100 0.114 0.122
E 4.750 5.050 0.187 0.198
E1 2.900 3.100 0.114 0.122
e 0.650 BSC
0.025 BSC
L 0.406 0.686 0.016 0.027
L1 0.940 REF
0.037 REF
Ø 8°
Note:
Dimensions do not include mold flash or protrusions;
E1
these shall not exceed 0.155mm(.006”) on any side.
Lead dimension shall not include solder coverage.
Copyright © 2005
Rev. 1.1, 2006-12-15
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
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관련 데이터시트

부품번호상세설명 및 기능제조사
LX1973

Automotive Light Sensor

Microsemi Corporation
Microsemi Corporation
LX1973A

Automotive Light Sensor

Microsemi Corporation
Microsemi Corporation

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