SHARP GP1U78Q Series DATA SHEET
Contents
1. Parameter Symbol Conditions MIN TYP MAX Unit Dissipation current Icc No input light 5 0 mA High level output voltage V on Vcc 0 5 V Low level output voltage VoL 23 0 45 V High level pulse width T 400 800 Low level pulse width T2 400 800 ji B P F center frequency fo 440 kHz 3 The burst wave as shown in the following figure shall be transmitted by the transmitter shown in Fig 1 4 Diversified models with a different B P F frequency as shown in a separate table are also available 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 SHARP GP1U78Q Series 600 us 600 u s amooo ng pe The value of fo is shown in a separate table Duty 50 E Model Line up Model No B P F frequency Unit GP1U78Q 40 GP1U780Q 36 GP1U781Q 38 GP1U782Q 36 7 ne GP1U783Q 32 75 GP1U787Q 56 8 E Internal Block Diagram l l Amp Limiter B P F Demodulator Integrator Comparator i SHARP GP1U78Q Series E Performance Using the2. transmitter shown in Fig 1 the output signal of the light detecting unit is good enough to meet the following items in the standard optical system in Fig 2 1 Linear reception distance characteristics When L 0 2 to 6 5m Ee lt 101x and p 0 in Fig 2 the output signal shall meet the electrical characteristcs in the attached list 2 Sensitivity angle reception distance characteristics When L 0 2 to 4 5m Ee lt 10 1x and p lt 30 in Fig 2 the output signal shalmeet the electrical characteristics in the attached list 3 Anti outer peripheral light reception distance characteristics When L 0 2 to 3m Ee lt 300 Ix and 0 in Fig 2 the output signal shall meet the electrical characteristics in the attached list 20cm 10kQ 7 VV _ 5 Sie Z AS S S Transmitter GL521 used f Duty 50 Center frequency fo g Vout depends on the attached model list Oscilloscope Fig 1 Transmitter In the above figure the transmitter should be set so that the output V out can be 40mV pp However the PD49PI to be used here should be of the short circuit current I sc 2 6 u A at Ev 100 Ix Ey is an illuminance by CIE standard light source A tungsten lamp Light detector face illuminance Ee of Reception distance L Transmitter indicates horizontal and vertical directions Fig 2 Standard optical system SHARP GP1U78Q Ser
3. SHARP x N GP1U78Q Series E Features 1 Less sensitive to fluorescent lamp driven by inverter 2 Improved anti electromagnetic noise char acteristic by mesh type light detecting window 3 Various B P F Band Pass Filter frequency 4 Built in voltage regulator circuit E Applications 1 TVs 2 VCRs 3 CATV set top boxes 4 BS receivers E Absolute Maximum Ratings Ta 25 C Parameter Symbol Rating Unit Supply voltage Vcc 0 to 6 3 V l Operating temperature T opr 10 to 70 C Storage temperature S stg 20 to 70 C 2 Soldering temperature T sol 260 C 1 No dew formation 2 For 5 seconds E Recommended Operations Conditions Parameter Symbol Value Unit Supply voltage Vcc 4 7 to 5 3 V E Electrical Characteristics GP1U78Q Series IR Detecting Unit For Remote Control E Outline Dimensions Unit mm 15493 X1 7 5 05 9 A al KOS oO g o 9 g 2 Vout 028 ares Vcc 15 17 38 GND 14 2 1 4 areas Pe a i cH Rib _o i lt TT O 25 p a Ss DOD 2 1 2 5 i a 2 54 17 KO ct 2 54 yr Recommended drilling as vi KA 55205 ewed from the soldering face Tolerance 0 3mm X 1 Detector center X 2 The dimension of connector base Ta 25 C Vec 5V
4. ies E Precautions for Use 1 Use the light emitting unit remote control transmitter in consideration of performance characteristics and operating condition of light emitting device and the characteristics of the light detecting unit 2 Pay attention to a malfunction of the light detecting unit when the surface is stained with dust and refuse Care must be taken not to touch the light detector surface If it should be dirty wipe off with soft cloth so as to prevent scratch In case some solvents are required use metyl alcohol ethyl alcohol or isoprophy alcohol Also protect the light detecting unit against flux and others 3 The shield case shall be grounded on PWB pattern 4 Do not apply unnecessary force to the terminals and case form outside 5 Do not push the light detector surface photodiode from outside 6 To avoid the electorstatic breakdown of IC handle the unit under the condition of ground ing with human body soldering iron etc 7 In case of adopting the infrared light detecting unit for the wireless remote control use it in accordance with the transmission scheme and the signal format recommended in Coun termeasures for malfunction prevention of home appliances with infrared remote control issued form Japan Association of Electrical Home Appliances AEHA in July 1987 8 As for other general cautions refer to the chapter Precautions for Use Page 78 to 93
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SHARP GP1U78Q Series DATA SHEET sharp es g876p gy