LX1971 Mini Control Board
1/27/2005
Microsemi
Rev 1.0b Integrated Products
11861 Western Avenue, Garden Grove CA. 92841 714-898-8121, FAX: 714-893-2570
WWW.Microsemi .COM
LX1971 Light Sensor
INTEGRATED PRODUCTS
SCHEMATIC
R3
VDD
R1
R2
C2
4.7µF
VOUT
GND
C1
0.1µF
LX1971IDU
VDD
NC
NC
SOURCE SINK
NC
NC
VSS
1
2
3
45
6
7
8
Open
The LX1971 Mini Light Sensor Board has been designed to easily interface and
control virtually any lighting requirement. Resistor values can be changed to
adjust desired minimum brightness range and slope. See LX1971 datasheet and
application note for additional information.
OUT SRC
DD
OUT
OUT
V=I×R2
R1 = OPEN
R2 = 60.4KΩ
R3 = 0Ω
V=3.3V
At total dark, V = 10mV
at maximum LUX, V = 2.5V
Protected by U.S. Patents: 6,787,757; Patents Pending
PHOTO
PACKAGE PIN OUT
1
2
3
45
6
7
8
DU
P
ACKAGE
(Top View)
FUNCTIONAL PIN DESCRIPTION
N
AME
D
ESCRIPTION
V
DD
Input Supply Voltage (Some boards wired with a RED pigtail.)
V
SS
Ground Reference for Power and Signal Output (Some boards wired with a BLACK pigtail.)
SNK Output Current Sink
SRC Output Current Source (Some boards wired with a PURPLE pigtail.)
L
LX
X1
19
97
71
1
