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| IS1U621/IS1U621L IS1U621/IS1U621L s Features 1. Compact (Volume : About 1/8 compared with GP1U58X ) 2. High sensitivity (Ultimate distance : MIN. 8 m) 3. B.P.F. (Band Pass Frequency) center frequency : (TYP. 38kHz) Sensors for Remote Control s Outline Dimensions IS1U621 3.5 3.4 3.5 3.4 (Unit : mm) 2.9 3.6 4.0 s Applications 1. Audio equipment 2. Cameras 21.0 1.0 8.7 1.0 4.5 1.0 0.5 2.54 1 * Tolerance : 0.2 mm 2 3 2.54 1 VOUT 2 GND 3 VCC IS1U621L 3.5 3.4 3.5 3.4 2.9 3.6 4.0 s Absolute Maximum Ratings Parameter Supply voltage *1Operating temperature Storage temperature *2 Soldering temperature Symbol VCC Topr Tstg Tsol Rating 0 to 6.0 - 10 to + 60 - 20 to + 70 260 (Ta=25C) Unit V C C C 2.9 2.9 + 0.4 - 0.2 0.1 4.5 1 2 3 1.4 2.1 *1 No dew condensation is allowed. *2 For 5 seconds at the position of 4.2 mm from the resin edge 2.9 2.9 0.4 + 0.2 - 0.1 1.5 15.2 1.0 1 VOUT 2 GND 3 VCC 4.2mm 3.1mm * Tolerance : 0.2 mm Soldering area Soldering area s Recommended Operating Conditions Parameter Operating supply voltage Symbol VCC Recommended operating conditions 4.7 to 5.3 Unit V " 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." IS1U621/IS1U621L s Electrical Characteristics Parameter Dissipation current High level output voltage Low level output voltage High level pulse width Low level pulse width B.P.F. center frequency *5 Linear (Ta=25C, Vcc =+5V) Symbol Conditions MIN. TYP. MAX. Unit ultimate distance ICC V OH V OL T1 T2 fO L No input light, Output terminal OPEN *3, Output terminal OPEN VCC- 0.2 *3, *4 *3 Ee < 10 lx 400 400 8.0 2.8 0.45 38 - 4.5 0.6 800 800 - mA V V s s kHz m *3 The burst wave as shown in the following figure shall be transmitted. *4 Pull-up resistance : 2.2k *5 By SHARP transmitter fo= 38kHz, Duty 50% Transmission signal 600 s 600 s Output T2 T1 s Internal Block Diagram Vout Limiter B.P.F. Demodulator Integrator Comparator Vcc GND IS1U621/IS1U621L s Performance Using the 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 8 m, Ee < 10 lx ( *6) and =0 in Fig. 2, the output signal shall meet the electrical characteristics in the attached list. (2) Sensitivity angle reception distance characteristics When L=0.2 to 5 m, Ee < 10 lx ( *6) and <= 30 in the direction X and =0 in the direction Y in Fig. 2, the output signal shall meet the electrical characteristics in the attached list. Further, the electrical characteristics shall be met when L=0.2 to 5 m, Ee < 10 lx (*6) and =0 in the direction X and <= 15 in the direction Y. *6 It refers to detector face illuminance. 20cm 10k + 5V PD49PI 10 F 10k Transmitter (GL521 used) Duty 50% f o = 38kH z Vout Oscilloscope Fig. 1 Transmitter In the above figure, the transmitter should be set so that the output Vout can be 40mV P - P . However, the PD49PI to be used here should be of the short-circuit current I SC =2.6 A at Ev=100 lx. (Ev is an illuminance by CIE standard light source A (tungsten lamp).) Direction Y Direction X External disturbing light detector face illuminance : Ee , , Reception distance : L Transmitter : Direction X : Direction Y Vout Fig. 2 Standard optical system IS1U621/IS1U621L Fig. 1 B.P.F. Frequency Characteristics (TYP.) Fig. 2 Sensitivity Angle (Direction X) Characteristics (TYP.) for Reference - 20 - 10 0 10 20 Relative sensitivity (5dB/div) - 30 Relative reception distance (%) 30 - 40 40 - 50 - 60 - 70 - 80 18 22 26 30 34 38 42 46 50 54 58 - 90 50 50 60 70 80 90 Carrier frequency (kHz) Angular displacement 0 Fig. 3 Sensitivity Angle (Direction Y) Characteristics (TYP.) for Reference - 20 - 10 0 10 20 Fig. 4 Relative Reception Distance vs. Ambient Temperature (TYP.) for Reference 120 Relative reception distance (%) - 30 30 Relative reception distance (%) 100 80 - 40 40 50 50 60 70 80 90 60 - 50 - 60 - 70 - 80 - 90 40 20 0 Unit SHARP standard transmitter Relative comparison with reception distance at V CC =5V, =0 , Ee <10 lx and Ta=25 C taken as 100% - 40 - 20 0 20 40 60 80 100 Angular displacement 0 Ambient temperature Ta (C) Fig. 5 AEHA (Japan Association of Electrical Home Appliances) Code Pulse Width Characteristics (1st Bit) (TYP.) for Reference 700 Low level pulse width (Conditions) 600 500 Unit AEHA code generating transmitter Pulse width ( s) 400 VCC =5V, Ta=RT, =0 , Ee < 10 lx 300 200 High level pulse width 1st bit T= 430s 100 0 0 1 2 3 4 5 6 7 8 9 10 Reception distance (m) IS1U621/IS1U621L Fig. 6 Spectral Sensitivity for Reference 100 90 80 Ta=25C Relative sensitivity (%) 70 60 50 40 30 20 10 0 500 600 700 800 900 1000 1100 Wavelength (nm) s Precautions for Operation (1) Use the light emitting unit (remote control transmitter), in consideration of performance, characteristics, operating conditions 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. * Conduct cleaning as follows. (3) Cleaning 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 the following solvents only. Solvents: Ethyl alcohol, methyl alcohol or isopropyl alcohol (4) To avoid the electrostatic breakdown of IC, handle the unit under the condition of grounding with human body, soldering iron, etc. (5) Do not apply unnecessary force to the terminal. (6) Example of recommended external circuit (mount outer mounting parts near the sensor as much as possible.) R1 VCC IS1U621 GND C2 Vout Vout Ve + C1 GND (Circuit constant) R1 = 47 5% C1 = 47 F C2 = 1 000pF Connect capacitor C 2 between Vout and GND terminals as shown above |
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