OPR5001B OPTEK | Alldatasheet

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Technical content

  • Surface mountable
  • Multiple channels available
  • TTL compatible output
  • Wide supply voltage range De scrip tion The OPR5001B, OPR5002B and OPR5003B are hybrid sensor arrays consisting of one, two or three channels of the Optek OPC8032 Differential Optical Comparator, (“DOC”) IC. Specifically designed for 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. Replaces OPR5001A Series. Ab so lute Maxi mum Rat ings (TA = 25o C un less oth er wise noted) Prod uct Bul le tin OPR5001B Janu ary 1998 Optical Comparator Arrays Type OPR5001B, OPR5002B, OPR5003B Op tek Tech nol ogy, Inc. 1215 W. Crosby Road Car roll ton, Texas 75006 (972) 323- 2200 Fax (972) 323- 2396 OPC8032 Block Dia gram 9-19

Tol er ance = ± .005(± .13) un less oth er wise noted. Type OPR5001B, OPR5002B, OPR5003B OPR5001B OPR5002B OPR5003B Op tek Tech nol ogy, Inc. 1215 W. Crosby Road Car roll ton, Texas 75006 (972) 323- 2200 Fax (972) 323- 2396 9-20

Type OPR5001B, OPR5002B, OPR5003B 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 5001 3 7 mA VCC = 24 V 1 5002 6 14 mA 5003 9 20 mA 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 300 kHz VCC = 5.0 V 5 tlh Output Rise Time 2.0 µs 6 thl Output Fall Time 500 ns 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 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) 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 recommeded that a decoupling capacitor be placed as close as possible to the device. Ap pli ca tion Cir cuit Op tek re serves the right to make changes at any time in or der to im prove de sign and to sup ply the best prod uct pos si ble. Op tek Tech nol ogy, Inc. 1215 W. Crosby Road Car roll ton, Texas 75006 (972)323- 2200 Fax (972)323- 2396 OPR5001B 9-21

Op tek Tech nol ogy, Inc. 1215 W. Crosby Road Car roll ton, Texas 75006 (972)323- 2200 Fax (972)323- 2396