LX1971 Mini Control Board I N T E G R A T E D LX1971 Light Sensor P R O D U C T S SCHEMATIC 1 R3 VDD 2 R1 3 Open 4 VOUT VDD VSS NC NC NC NC SOURCE SINK 8 GND 7 6 5 WWW . Microsemi .C OM C1 0.1F LX1971 I DU R2 C2 4.7F PHOTO 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. VOUT = ISRC x R2 R1 = OPEN R2 = 60.4K R3 = 0 PACKAGE PIN OUT VDD = 3.3V 1 8 At total dark, VOUT = 10mV 2 7 at maximum LUX, VOUT = 2.5V 3 6 4 5 DU PACKAGE (Top View) FUNCTIONAL PIN DESCRIPTION NAME 1/27/2005 Rev 1.0b DESCRIPTION VDD Input Supply Voltage (Some boards wired with a RED pigtail.) VSS 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.) Microsemi Integrated Products 11861 Western Avenue, Garden Grove CA. 92841 714-898-8121, FAX: 714-893-2570 LX1971 Protected by U.S. Patents: 6,787,757; Patents Pending