AUK CORP. Digital Output Ambient Light Sensor KOE1023A (REFERENCE) Description 2 The KOE1023A is an Ambient Light Sensor with I C interface which converts light intensity into digital output in controllable time periods and gains. The KOE1023A incorporates photodiodes, low noise amplifiers, and ADCs(Analog to Digital Converter) in a single chip. The photo diode has the different spectrum response each other. LPF ADC LPF ADC has the 16 bit resolution from 0 to 65,535 for representing light intensity. ADC Features Converters light intensity to digital data format 16 bits resolution of light intensity Close to Human eye response Programmable interrupt function 50/60Hz ripple rejection I2C protocol interface up to 400 kHz (fast mode) Package : COB 6Pin, 2.2 x 2.0 x 0.7 mm3 Applications Mobile Devices : Smart phone, PDA, and GPS Computing devices : Notebook, UMPC web pod, Monitor Consumer devices : LCD TV, digital picture frame, digital camera Other devices : Industrial and medical light sensing Parameter [TA = 25 Symbol Min. Max. Max. VDD - 3.8 V Operating Temperature Topr. -30 85 Storage Temperature Tstg. -30 85 Peak Reflow Soldering Temperature *1 Tsol - 260 Supply Votage AS PD Register Absolute Maximum Ratings Control Logic ] *1. Relfow Soldering Temp. 260℃ (Max 10sec) The contents of this data sheet are subject to change without advance notice for the purpose of improvement. When using this product, would you please refer to the latest specifications. I2C Logic IN SC SD KOE1023A (REFERENCE) [TA = 25 Recommended Operating Conditions Parameter Symbol Conditions VDD Supply voltage 2 VIL VDD=3.0V 2 VIH VDD=3.0V 2 fscl I C input low voltage I C input high voltage I C operating frequency Min. Typ. Max. Unit. 2.7 3.0 3.3 V 0.8 V 2.1 V 10 400 Symbol Peak Sensitivity Wavelength I2C Signal Input Conditions Min. λp Logic High 0.7*VDD Logic Low VIL 0 With Load ISIG Ch0 Ch1 ADC Count Value Ch0 Ch1 Gain Scaling(relative to 1X) Illuminance Responsivity Ch0 1886 TungstenLamp (2856K,d=30cm) VDD=3V,Ev=1,000lux 16X 15,970 fOSC IDD IDD(SD) Shutdown Current 2 VDD=3.0V No Light, VDD=3V, V1(SD) ≥ (VDD-0 5) 0.3*VDD V 6 ㎃ Counts 10,189 15 16 17 1.89 X Counts/ Lux 0.51 VDD=3.0V, Fluorescent Lamp Oscillator Unit. ㎚ 505 VDD=3.0V, Fluorescent Lamp Maximum Detectable Intensity Supply Current Max. ] V Fluorescent Lamp VDD=3V,Ev=1,000lux RV Ch1 Typ. 550 VIH Output Current ㎑ [TA = 25 Electrical & Optical Specifications Parameter ] 40,000 Lux ㎑ 690 735 780 100 200 600 ㎂ 3 10 ㎂ Symbol Min. Typ. Max. [Ta=25℃] Unit. Conversion time t(CONV) 1.2 100 400 ㎳ Clock frequency f(SCL) 400 ㎑ Bus free time between start and stop condition t(BUF) 1.3 ㎲ t(HDSTA) 0.6 ㎲ Repeated start condition setup time t(SUSTA) 0.6 ㎲ Stop condition setup time t(SUSTO) 0.6 ㎲ Data hold time t(HDDAT) 0 Data setup time I C Timing Characteristics Parameter Hold time after(repeated) start condition. After this period, the first clock is generated. 0.9 ㎲ t(SUDAT) 100 ㎱ 2 t(LOW) 1.3 ㎲ 2 t(HIGH) 0.6 I C clock(SCL) low period I C clock(SCL) high period Clock / Data fall time Clock / Data rise time ㎲ t(F) 300 ㎱ t(R) 300 ㎱ The contents of this data sheet are subject to change without advance notice for the purpose of improvement. When using this product, would you please refer to the latest specifications. (REFERENCE) KOE1023A Application Circuit Package Outline Dimensions (Unit : mm) The contents of this data sheet are subject to change without advance notice for the purpose of improvement. When using this product, would you please refer to the latest specifications.