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| IS474 IS474 s Features 1. Linear output conforming to illuminance (50 lx to 50000 lx) 2. Conforming to required visual sensitivity characteristics by means of built-in filter Peak sensitivity wavelength : TYP. 550 nm 3. Not dependent on kind of light source such as incandescent lamp and fluorescent lamp 4. Easy-to-mount holder-integral side view type Linear Output Type OPIC Light Detector s Outline Dimensions 9.0 6.0 2.4 Detector center 0.28 Production country 4.5 (Unit : mm) 2.0 5.8 1.4 2-0.5 2-1.0 1.7- + 0.1 0.2 16.7 0.1 Type number 11 1.5 JAPAN 2.0 13 4.0 1.0 2.0 2.54 2.0 1.5 4-0.4 + 0.2 - 0.1 2.75 2-R0.3 1234 PPP s Applications 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 : 10 MAX. Internal connection diagram 0.5 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. s Absolute Maximum Ratings Parameter Supply voltage Output current Output voltage Power dissipation Operating temperature Storage temperature *1 (Ta=25C) 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 temperature Symbol VCC IO VO P T opr T stg T sol 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 s Recommended Operating Conditions Parameter Supply voltage Illuminance Output voltage Operating temperature *1 CIE standard light source A (tungsten lamp) Symbol VCC EV *1 VO T opr MIN. 4.5 100 0 - 10 MAX. 5.5 50 000 VCC - 1.5 70 Unit V lx V C s Electro-optical Characteristics 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 p tr tf PSRR1 Power source fluctuation removability PSRR2 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= 3.3k RL= 3.3k Ev= 0 lx RL= 3.3k at 10kHz Ev= 0 lx RL= 3.3k at 100kHz Ev=1000 lx RL= 3.3k at 10kHz *1 (Vcc=5V, Ta=25C ) MIN. 0.2 - 6.0 - 60 9.0 (0.9) - TYP. 0.55 -10 -100 10 -11 -10 (1.1) -10 (550) 12 30 48 MAX. 1.0 - 14 - 140 11 (1.3) - 500 - Unit mA A A A A nA nm s s dB Test circuit 1 2 2 2 2 2 3 3 - *4 - 39 - dB - PSRR3 *1 Illuminance by CIE standard light source A (tungsten lamp) *2 Illuminance by incandescent lamp *3 Illuminance by fluorescent lamp - 11 - dB - *4 Power source fluctuation removability PSRR is defined according to the following formula. Vcc ripple voltage PSRR =201og Vo ripple voltage Test circuit 1 Vcc A Ev Io Test circuit 2 Vcc Ev 5V Test circuit 3 Ip=660nm Vin A 5V tr,tf=0.01 s Zo=50 Vin T 1.0V IS474 Vcc Io GND 3.3k T=500 s Adjust Vin so that Vo waveform may be of 1.0V amplitude 90% Ro Vo CRT Io IS474 GND Vcc IS474 GND 0V tr tf 10% IS474 Fig. 1 Total Power Dissipation vs. Ambient Temperature 160 150 140 Fig. 2 Output Current vs. Illuminance 10 000 Total dissipation P (mW) 100 80 60 40 20 0 - 25 0 25 50 75 85 100 Output current Io ( A) 120 1000 100 10 V CC = 5V, Ta = 25C E V : Illuminance by CIE standard light source A 1 10 1 10 2 10 3 10 4 10 5 Ambient temperature Ta (C ) Illuminance E V (lx) Fig. 3 Spectral Sensitivity 100 V CC = 5V Ta= 25C 80 Fig. 4 Relative Output Current vs. Ambient Temperature 1.3 V CC = 5V E V =1000 lx (CIE standard light source A) 1.2 Relative sensitivity (%) 60 Relative output current 1.1 40 1.0 20 0.9 0 400 500 600 700 800 900 0.8 - 25 0 25 50 75 100 Wavelength (nm) Ambient temperature Ta (C) Fig. 5 Dark Output Current vs. Ambient Temperature -6 - 10 V CC = 5V EV= 0 Fig. 6 Output Current vs. Supply Voltage -110 E V = 1000 lx (CIE standard light source A) Ta= 25C Dark output current Iod (A) - 10 - 8 Output current Io ( A) - 25 0 25 50 75 100 - 10 - 7 -100 - 10 - 9 - 10 - 10 -90 0 2 4 6 8 10 Ambient temperature Ta (C) Supply voltage V CC (V) IS474 Fig. 7 Output Current vs. Output Voltage Output Current vs. Output Voltage Test Circuit Ev = 1 000 lx -100 VCC 800 lx (Main detector) 600 lx PD1 PD2 (Detector for correction) Output current Io ( A) -80 Constant voltage circuit 5V A IO VO -60 -40 400 lx GND -20 0 0 200 lx V CC = 5V, Ta = 25C (CIE standard light source A) 1 2 3 4 5 Output voltage V O (V) Fig. 8 Supply Current vs. Supply Voltage 3 Ta= 25C (CIE standard light source A) Fig. 9 Supply Current vs. Illuminance 10 2 Vcc = 5V Vo = 0 (CIE standard light source A) Ev = 10 000 lx ( mA) Supply current I 0 lx 10 CC ( mA) 10 1 2 Supply current I CC 10 0 1 1 000 lx 10 -1 100 lx 0 0 5 10 -2 101 10 2 10 3 10 4 10 5 Supply voltage V CC ( V) Illuminance Ev (lx) Fig. 10 Frequency Characteristics 1 000 Vcc = 5v Ta = 25C Frequency Characteristics Test Circuit (Main detector) Constant voltage circuit LED DP1 DP2 VCC IO 1k VO CRT 5V ( mV) 100 * Ev= 1 000 lx = 660nm P OP AC output voltage V 47 CRT (Detector for correction) GND Output voltage V O 10 * Ev= 100 lx * Incident light quantity E V : Converted value of DC component of output voltage VO VOP 1 1 10 100 1 000 10 000 100 000 Time t Frequency f (Hz) IS474 Fig. 11 Radiation Diagram (Right/Left Direction) - 20 - 10 0 + 10 + 20 Vcc = 5V Ta = 25C Fig. 12 Radiation Diagram (Top/Bottom Direction) - 20 -10 0 100 - 30 +10 +20 Vcc = 5V Ta = 25C 100 - 30 Relative sensitivity (%) +30 Relative sensitivity (%) 80 +40 80 +30 - 40 60 - 40 +40 60 - 50 40 +50 +60 20 +70 +80 0 +90 +50 40 +60 20 +70 +80 - 50 - 60 - 70 - 80 - 90 - 60 - 70 - 80 - 90 0 Angular displacement +90 Angular displacement s 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 >= 0.01 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 45C 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. q Please refer to the chapter "Precautions for Use". (Page 78 to 93) |
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