GP1A33R GP1A33R OPIC Photointerruper with Encoder Function ■ Features ■ Outline Dimensions 1. 2-phase ( A, B ) digital output 2. Capable of using plastic disk 3. Sensing accuracy ( Disk slit pitch: 1.14mm ) 4. TTL compatible 5. Compact and light ( Unit: mm ) 1 5 4 GND 5 V CC 6 V OA 8.0 6.0 4- R1.3 ± 0.15 15.0± 0.15 20.0 4 3 - (1.27) 3 (2.54) 2 1.4 ± 0.15 4 - R2.5 (1.27) (7.25) 4 3 6.4 11.4 12.0 7.5 ± 0.1 8.0MIN. 4.4 9.9 2.0 ± 0.15 10.5MIN. 1. Electronic typewriters, printers 2. Numerical control machines 2 GP1A33R ■ Applications 6 5 OPIC 6.4 ± 0.15 4.0 ± 0.15 1 1 Anode 2 Cathode 3 V OB 2.5 ± 0.15 0.8 ± 0.15 OPIC 2- φ 2.0 ± 0.1 Internal connection diagram * Tolerance :± 0.3mm * ( ): Reference dimensions 6 *“ OPIC” ( Optical IC ) is a trademark of the SHARP Corporation. An OPIC consists of a light-detecting element and signalprocessing circuit integrated onto a single chip. ■ Absolute Maximum Ratings Parameter Forward current *1 Peak forward current Input Reverse Voltage Power dissipation Supply voltage Low level output current Output Power dissipation Operating temperature Storage temperature *2 Soldering temperature ( Ta= 25˚C ) Symbol IF I FM VR P V CC I OL PO T opr T stg Tsol Rating 65 1 6 100 7 20 250 0 to + 70 - 40 to + 80 260 Unit mA A V mW V mA mW ˚C ˚C ˚C *1 Pulse width<=100 µ s, Duty ratio= 0.01 *2 For 5 seconds “ 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.” GP1A33R ■ Electro-optical Characteristics ( Unless otherwise specified, Ta = 0 to + 70˚C ) Parameter Forward voltage Reverse current Operating supply voltage High level output voltage Low level output voltage Supply current Input Output Transfer characteristics Symbol VF IR VCC VOH VOL I CC DA*5 DB*5 f MAX. Duty ratio Response frequency Conditions Ta= 25˚C, I F = 30mA Ta= 25˚C, VR = 3V *3 VCC = 5V, I F = 30mA I OL = 8mA, V CC = 5V, I F = 30mA *3*4 I F = 30mA, VCC = 5V *3 V CC = 5V, I F = 30mA, f=2.5kHz *3 V CC = 5V, I F = 30mA *3 MIN. 4.5 2.4 20 20 - TYP. 1.2 5.0 4.9 0.1 5 50 50 - MAX. 1.5 10 5.5 0.4 20 80 80 5 *3 Measured under the condition shown in Measurement Condition. *4 In the condition that output A and B are low level. t t *5 D A= t AH x 100, D B = t BH x 100 BP AP ■ Output Waveforms Output A ( VOA) t AH t AP Output B ( VOB) t AB1 t BH t BP Rotational direction : Counterclockwise when seen from OPIC light detector Fig. 1 Forward Current vs. Ambient Temperature Fig. 2 Output Power Dissipation vs. Ambient Temperature 100 300 Output power dissipation PO ( mW ) 90 Forward current I F ( mA ) 80 70 65 60 50 40 30 20 250 200 150 100 50 10 0 0 0 25 50 70 75 Ambient temperature T a ( ˚C) 100 0 25 50 70 75 Ambient temperature T a ( ˚C) 100 Unit V µA V V V mA % % kHz GP1A33R Fig. 3 Duty Ratio vs. Frequency Fig. 4 Phase Difference vs. Frequency Temperature 0.9 130 VCC = 5V VCC = 5V 0.8 Phase difference θ ABI ( deg. ) T a = 25˚C 0.7 t AH ( ) t AP Output A 0.6 Duty ratio 120 I F = 30mA 0.5 t BH ( ) t BP Output B 0.4 0.3 I F = 30mA T a = 25˚C 110 θ ABI = 100 90 80 70 60 0.2 0.1 1 2 5 10 50 20 1 2 5 Fig. 5 Duty Ratio vs. Ambient Temperature 1.0 t BH t BP 0.6 VCC = 5V IF = 30mA f = 2.5kHz 130 t AH t AP ( Output A) 0.7 Duty ratio 140 Phase difference θ AB1 ( deg. ) 0.8 20 Fig. 6 Phase Difference vs. Ambient Temperature VCC = 5V I F = 30mA f = 2.5kHz 0.9 10 Frequncy f ( kHz ) Frequency f ( kHz ) ( Output B) 0.5 0.4 0.3 120 t AB1 θ AB1 =x t AP 110 360˚ 100 90 80 70 0.2 60 0.1 50 0 40 0 25 50 75 0 100 Ambient temperature Ta ( ˚C ) Fig. 7 Duty Ratio vs. Distance ( X direction ) 0.9 t AH t AP t BH t BP 0.6 0.5 VCC = 5V I F = 30mA f= 2.5kHz T a = 25˚C 120 ( Output A) ( Output B) 0.4 0.3 100 Fig. 8 Phase Difference vs. Distance ( X direction ) Phase difference θ AB1 ( deg. ) 0.7 25 50 75 Ambient temperature Ta ( ˚C ) 130 V CC = 5V I F = 30mA f= 2.5kHz T a = 25˚C 0.8 Duty ratio t ABI t AP x 360˚ 110 θ AB1 = 100 t AB1 t AP 90 x 360˚ Reference position (-) 80 (+) 70 0.2 60 0.1 - 1.0 50 - 1.0 GP1A33R Disk - 0.5 0 0.5 Distance X ( mm ) ( Shifting encoder ) 1.0 - 0.5 0 0.5 Distance X ( mm ) ( Shifting encoder ) 1.0 GP1A33R 0.9 0.6 0.5 t AH t AP ( Output A ) t BH t BP ( Output B ) V CC = 5V I F = 30mA f= 2.5kHz T a = 25˚C 120 Phase difference θ AB1 ( deg. ) 0.7 Duty ratio 130 VCC = 5V I F = 30mA f= 2.5kHz T a = 25˚C 0.8 Fig.10 Phase Difference vs. Distance ( Y direction ) 0.4 0.3 110 θ AB1 = 100 t AB1 x 360˚ t AP 90 GP1A33R 80 (+) 70 (-) 0.2 60 Disk 0.1 - 1.0 - 0.5 0 0.5 50 - 1.0 1.0 Distance Y ( mm ) ( Shifting encoder ) VCC = 5V I F = 30mA f = 2.5kHz T a = 25˚C 0.8 0.7 t AH ( Output A ) t AP t BH ( Output B ) t BP 0.6 0.5 0 0.5 1.0 0.4 0.3 Fig.12 Phase Difference vs. Distance ( Z direction ) 130 VCC = 5V I F = 30mA f = 2.5kHz T a = 25˚C 120 Phase difference θ AB1 ( deg. ) 0.9 - 0.5 Distance Y ( mm ) ( Shifting encoder ) Fig.11 Duty Ratio vs. Distance ( Z direction ) Duty ratio Reference position Fig. 9 Duty Ratio vs. Distance ( Y direction ) 110 θ AB1 = 100 t AB1 x 360˚ t AP 90 80 ( Detecting side) Z 70 OPIC Disk 60 0.2 ( Emitting side ) 0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 Distance Z ( mm ) ( Shifting encoder ) 0.7 0.8 50 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Distance Z ( mm ) ( Shifting encoder ) 0.8 GP1A33R <Basic Design> Measurement Conditions R O ( distance between the disk center and half point of a slit ) , P ( slit pitch ) , S 1 and S 2 ( installing position of photointerrupter ) will be provided by the following equations. Slit pitch : P ( slit center ) A 15 20 R O= GP1A33R 8 10 R 3 .8 9 4-R1.3 x 10.89 ( mm ) N: number of slits 2x p x RO ( mm ) N S 1= R O- 1.765 ( mm ) , S 2= S 1+ 6.7 ( mm ) Note ) When the number of slits is changed, values in parenthesis are also changed according to the number. 1.4 6.4 S2 (15.825) Disk center P= N 60 11.4 f 26.48, 0.1t 60 slits Enlarged drawing of A portion 4 Slit pitch : P A S1 9.9 r2 0.8 2 7.5 12 0.5 Disk (9.125) r1 P r1= r2 ( Ex. ) In the case of N= 100P/R 100 R O= x 10.89 ( mm ) 60 = 18.15mm 2x p x 18.15 P= 100 = 1.14mm S 1= 18.15- 1.765 = 16.385mm S 2= 16.385+ 6.7 = 23.085mm Disk center ■ Precautions for Use ( 1 ) This module is designed to be operated at I F = 30mA TYP. ( 2 ) Fixing torque : MAX. 0.6N • m ( 3 ) In order to stabilize power supply line, connect a by-pass capacitor of more than 0.01 µF between Vcc and GND near the device. ( 4 ) As for other general cautions, refer to the chapter “ Precautions for Use ” .