IS474 IS474 Linear Output Type OPIC Light Detector ■ Features ■ Outline Dimensions 9.0 6.0 2.4 2.0 Detector center 5.8 2.0 13 2-1.0 4.0 4. Easy-to-mount holder-integral side view type + 0.1 0.2 2-0.5 incandescent lamp and fluorescent lamp 1.7- 3. Not dependent on kind of light source such as 16.7± 0.1 1.4 JAPAN 11 Type number 4.5 0.28 Production country 2. Conforming to required visual sensitivity characteristics by means of built-in filter Peak sensitivity wavelength : TYP. 550 nm (Unit : mm) 1.5 1. Linear output conforming to illuminance (50 lx to 50000 lx) 1.5 1.0 0.2 4-0.4 -+ 0.1 2-R0.3 2.0 2.54 2.0 ■ Applications θ θ 2.75 1 2 3 4 P P P 0.5 1. TV sets 2. CRTs of personal computers and others * * * * Unspecified tolerance : ± 0.2 ( ) : Reference dimensions Lead pitch (P) : 1.27 (at lead root) Lead deflection angle θ : ± 10˚ MAX. Internal connection diagram 1 Constant voltage circuit Photodiode A 2 Photodiode B Current amp. 3 1 Vcc 2 Io 3 GND 4 NC * OPIC (Optical IC) is a trademark of SHARP corporation. An OPIC consists of a light-detecting element and signal-processing circuit integrated onto a single chip. ■ Absolute Maximum Ratings Parameter Supply voltage Output current Output voltage Power dissipation Operating temperature Storage temperature *1 Soldering temperature Symbol V CC IO VO P T opr T stg T sol (Ta=25˚C) Rating - 0.5 to 8 -10 - 0.5 to VCC 150 - 25 to + 85 - 40 to + 85 260 Unit V mA V mW ˚C ˚C ˚C Soldering area *1 For MAX. 3 seconds at the position shown in the right drawing “ In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that occur in equipment using any of SHARP's devices, shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest version of the device specification sheets before using any SHARP's device.” IS474 ■ Recommended Operating Conditions Parameter Supply voltage Illuminance Output voltage Operating temperature Symbol V CC E V *1 VO T opr MIN. 4.5 100 0 - 10 MAX. 5.5 50 000 V CC - 1.5 70 Unit V lx V ˚C *1 CIE standard light source A (tungsten lamp) ■ Electro-optical Characteristics (Vcc=5V, Ta=25˚C ) Parameter Supply current Output current 1 Output current 2 Output current ratio 1 Output current 3 Output current 4 Output current ratio 2 Dark output current Peak sensitivity wavelength Response time (rise) Response time (fall) Symbol Icc IO1 IO2 RIO1 IO3 IO4 RIO2 Iod λp tr tf PSRR1 *4 Power source PSRR2 fluctuation removability PSRR3 Conditions Ev= 0 lx *1 Ev= 100 lx *1 Ev= 1000 lx Io2/Io 1 *2 Ev= 100 lx *3 Ev= 100 lx Io3/Io 4 *1 Ev= 0 lx RL= 3.3kΩ RL= 3.3kΩ Ev= 0 lx RL= 3.3kΩ at 10kHz Ev= 0 lx RL= 3.3kΩ at 100kHz Ev=1000 lx RL= 3.3kΩ at 10kHz *1 - 500 - Unit mA µA µA µA µA nA nm µs µs Test circuit 1 2 2 2 2 2 3 3 48 - dB - - 39 - dB - - 11 - dB - MIN. 0.2 - 6.0 - 60 9.0 (0.9) TYP. 0.55 -10 -100 10 -11 -10 (1.1) MAX. 1.0 - 14 - 140 11 (1.3) - -10 (550) 12 30 - *1 Illuminance by CIE standard light source A (tungsten lamp) *2 Illuminance by incandescent lamp *3 Illuminance by fluorescent lamp *4 Power source fluctuation removability PSRR is defined according to the following formula. Vcc ripple voltage PSRR =201og Vo ripple voltage Test circuit 1 Test circuit 2 Test circuit 3 Ip=660nm Vcc Vcc Vcc A Ev Ev Io IS474 5V GND A GND IS474 Vin Io IS474 Io Ro Vcc Vo GND 5V 3.3kΩ tr,tf=0.01µ s Zo=50Ω Vin CRT T=500µ s Adjust Vin so that Vo waveform may be of 1.0V amplitude T 1.0V 90% 10% 0V tr tf IS474 Fig. 2 Output Current vs. Illuminance 160 150 140 10 000 120 1000 Output current Io (µ A) Total dissipation P (mW) Fig. 1 Total Power Dissipation vs. Ambient Temperature 100 80 60 40 100 10 V CC = 5V, Ta = 25˚C E V : Illuminance by CIE standard light source A 20 0 - 25 0 25 50 75 85 1 10 1 100 10 2 Ambient temperature Ta (˚C ) 10 3 10 4 Illuminance E V (lx) Fig. 3 Spectral Sensitivity Fig. 4 Relative Output Current vs. Ambient Temperature 100 1.3 V CC = 5V E V =1000 lx (CIE standard light source A) V CC = 5V Ta= 25˚C 1.2 Relative output current Relative sensitivity (%) 80 60 40 20 0 1.1 1.0 0.9 400 500 600 700 800 0.8 900 - 25 Wavelength λ (nm) Output current Io ( µ A) Dark output current Iod (A) - 10 - 7 - 10 - 8 - 10 - 9 25 50 50 75 100 -110 E V = 1000 lx (CIE standard light source A) Ta= 25˚C V CC = 5V EV= 0 0 25 Fig. 6 Output Current vs. Supply Voltage - 10 - 25 0 Ambient temperature Ta (˚C) Fig. 5 Dark Output Current vs. Ambient Temperature -6 - 10 - 10 10 5 75 Ambient temperature Ta (˚C) 100 -100 -90 0 2 4 6 Supply voltage V CC (V) 8 10 IS474 Fig. 7 Output Current vs. Output Voltage Output Current vs. Output Voltage Test Circuit Ev = 1 000 lx -100 VCC 800 lx Output current Io (µ A) -80 (Main detector) A PD2 (Detector for correction) 400 lx -40 5V PD1 600 lx -60 Constant voltage circuit VO IO GND 200 lx -20 V CC = 5V, Ta = 25˚C (CIE standard light source A) 0 0 1 2 3 4 5 Output voltage V O (V) Fig. 8 Supply Current vs. Supply Voltage Fig. 9 Supply Current vs. Illuminance 10 2 3 ( mA) Ev = 10 000 lx Supply current I Supply current I 10 1 Vcc = 5V Vo = 0 (CIE standard light source A) CC 2 CC ( mA) Ta= 25˚C (CIE standard light source A) 1 000 lx 1 100 lx 0 lx 5 10 -1 10 -2 101 0 0 10 0 10 10 2 Supply voltage V CC ( V) 10 3 10 4 Fig. 10 Frequency Characteristics Frequency Characteristics Test Circuit 1 000 VCC (Main detector) Constant voltage circuit λ * Ev= 1 000 lx = 660nm P 47Ω * Ev= 100 lx 10 1 CRT 1 10 100 1 000 Frequency f (Hz) 10 000 100 000 Output voltage V O AC output voltage V OP ( mV) LED DP1 IO DP2 1kΩ Vcc = 5v Ta = 25˚C 100 10 5 Illuminance Ev (lx) (Detector for correction) VO CRT GND * Incident light quantity E V : Converted value of DC component of output voltage VO VOP Time t 5V IS474 Fig. 11 Radiation Diagram (Right/Left Direction) - 10˚ 0 + 10˚ -10˚ 0 +10˚ 100 +20˚ Vcc = 5V Ta = 25˚C +30˚ - 30˚ Relative sensitivity (%) - 30˚ - 50˚ - 20˚ Vcc = 5V Ta = 25˚C 100 - 40˚ Fig. 12 Radiation Diagram (Top/Bottom Direction) + 20˚ 80 +30˚ 60 +40˚ 40 +50˚ - 40˚ - 50˚ - 60˚ 20 - 70˚ - 80˚ - 90˚ 0 +60˚ - 60˚ +70˚ - 70˚ +80˚ - 80˚ +90˚ - 90˚ Angular displacement θ 80 Relative sensitivity (%) - 20˚ 60 +40˚ +50˚ 40 +60˚ 20 +70˚ +80˚ 0 +90˚ Angular displacement θ ■ Precautions for Operation (1) It is recommended to connect a capacitor between VCC and GND near the device in order to stabilize power supply line L Vcc Device C L <= 20 mm C >= 0.01µ F 2 pieces of photodiodes are built in this device to amplify difference in collector current between them. Radiation of even light to 2 pieces of photodiodes is recommended. Radiation of uneven light may cause change of spectral sensitivity or starting failure of the circuit after power is supplied. (2) Cleaning • Conduct cleaning as follows. Solvent dip cleaning : Solvent temperature of 45˚C max., dipping time : Within 3 minutes Ultrasonic cleaning : Elements are affected differently depending on the size of cleaning bath, ultrasonic output, time, size of PWB and mounting method of elements. Conduct trial cleaning on actual operating conditions in advance to make sure that no problem results. • Use following solvents only. Solvents : Ethyl alcohol, methyl alcohol and isopropyl alcohol (3) Soldering Be sure to perform soldering at values within the maximum ratings. Take care so that not external force is applied to the lead during and immediately after soldering. Do not perform reflow soldering. ● Please refer to the chapter "Precautions for Use". (Page 78 to 93)