OPR5010 OPTEK | Alldatasheet

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Technical content

  • Surface mountable
  • TTL compatible output
  • Wide supply voltage range De scrip tion The OPR5010 is a hybrid sensor array consisting of three channels of the Optek OPC8031 Differential Optical Comparator, (”DOC-2”) IC. Specifically designed for high speed/high resolution encoder applications, the open collector output switches based on the comparison of input photodiode’s light current levels. Logarithmic amplification of the input signals makes possible operation over a wide range of light levels. The packages are surface mountable and made from a custom opaque polyimide which shields the active devices from stray light. The high temperature laminate can withstand multiple exposures to the most demanding soldering conditions. Wrap around contacts are gold plated for exceptional storage and wetting characteristics. Ab so lute Maxi mum Rat ings (TA = 25o C un less oth er wise noted) Prod uct Bul le tin OPR5010 September 1998 Optical Comparator Array Type OPR5010 OPC8031 Block Dia gram Op tek Tech nol ogy, Inc. 1215 W. Crosby Road Car roll ton, Texas 75006 (972)323- 2200 Fax (972)323- 2396

Notes: 1. Pin (+) = 1.2 µW and Pin (-) = 0.8 µW. 2. Pin (+) = 100.0 nW and Pin (-) = 1.0 µW. 3. Pin (+) = 1.0 µW and Pin (-) 100.0 nW. kΩ trimpot to set the output signal to 50% duty cycle for maximum operating frequency. 6. Measured between 10% and 90% points. 7. Optical Hysteresis and Optical Offset are found by placing 1.0 µW of light on the inverting photodiode and ramping the light intensity of the noninverting input from .5 µW up to 1.5 µW and back down. This will produce two trigger points, an upper trigger point and a lower trigger point. These points are used to calculate the optical hysteresis and offset. These are de fined as: % Optical Hysteresis = 100 x (P rise - P fall) P in (-) % Optical Offset = 100 x (P average - P (-) ) P in (-) Where: P in (-) = Light level incident upon the “-” photodiode on the I.C. chip (Pin (-) = 1.0 µW). P rise = Value of light power level incident upon the “+” photodiode that is required to switch the digital output when the light level is an increasing level (rising edge). P fall = Value of light power level incident upon the “+” photodiode that is required to switch the digital output when the light level is a decreasing level (falling edge). P average = (P rise + P fall ) Elec tri cal Char ac ter is tics (TA = 25o C un less oth er wise noted) SYM BOL PA RAME TER MIN TYP MAX UNITS TEST CON DI TIONS NOTES ICC Supply Current 9 20 mA VCC = 24 V VOL Low Level Output Voltage 0.3 0.4 V IOL = 14 mA, VCC = 4.5 V 2 IOH High Level Output Current 0.1 1.0 µA VCC = VO = 20.0 V 3 OPT-HYS Optical Hysteresis 2.0 15.0 40 % VCC = 5.0 V, IOL = 1.0 mA 4, 7 OPT-OFF Optical Offset -40 10 +40 % VCC = 5.0 V, IOL = 1.0 mA 4, 7 fmax Frequency Response 1.0 MHz VCC = 5.0 V 5 tlh Output Rise Time 1.0 µs 6 thl Output Fall Time 300 ns Notes: 1. A capacitor of a value between .001 to .01 µF connected as close as possible to the trim terminals is recommended if the device appears to be susceptable to noise transients. These capacitors will reduce fmax. It is left to the user to determine the best value for the application. 2. The 74LS04 is recommended as a means of isolating the “DOC” comparator circuitry from transients induced by inductive and capacitive loads. 3. It is re com me ded that a de cou pling ca paci tor be placed as close as pos si ble to the de vice. Ap pli ca tion Cir cuit OPR5010 Optek reserves the right to make changes at any time in order to improve design and to supply the b est product possible. Op tek Tech nol ogy, Inc. 1215 W. Crosby Road Car roll ton, Texas 75006 (972)323- 2200 Fax (972)323- 2396