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| Ratiometric Linear Hall-effect Sensor OHN3150U, OHN3151U, OHS3150U, OHS3151U Features: * * * * * Ratiometric linear output capable of sinking and sourcing current 4.5 V to 6.0 V operation Responds equally to positive and negative magnetic fields Excellent temperature stability to operate in harsh environments Robust package capable of withstanding harsh environments Product Photo Here Description: Each ratiometric linear Hall-effect sensor contains a monolithic integrated circuit on a single chip. This circuit incorporates a quadratic Hall sensing element, which minimizes the effects of mechanical and thermal stress on the Hall element and temperature compensating circuitry to compensate for the inherent Hall element sensitivity change over temperature current. These ratiometric linear Hall-effect sensors provide an output voltage that varies in proportion to the applied magnetic field. The voltage output will increase in response to a south pole (positive) magnetic field applied perpendicular to the package symbolization face, and will decrease in response to a north pole (negative) magnetic field. These 3150U & 3151U ratiometric linear Hall-effect sensors can be used as a non-contact sensor for rotary and linear position sensing and for current sensing. The devices in this series are similar in performance, except for their allowable quiescent voltage output change over the specified operating temperature range. Applications: * * * * * * Non-Contact Magnetic Sensing Assembly LIne Automation Machine Automation Machine Safety Door Sensor Where sensing is required in dirty environments OHN3150U OHS3150U OHN3151U OHS3151U Ordering Information -20C to +85C -40C to +150C -20C to +85C -40C to +150C VOQ Change over TA = 35 Gauss VOQ Change over TA = 50 Gauss 1 Vcc Voltage Regulator Qual Hall Element Dual to Single Converter Vcc 3 Output 2 Gnd RoHS OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. Issue A 06/05 Page 1 of 4 OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Ratiometric Linear Hall-effect Sensor Emitting Diode OHN3150U, OHN3151U, OHS3150U, OHS3151U Absolute Maximum Ratings Supply Voltage, Vcc Storage Temperature Range, TS Operating Temperature Range, TA (OHS prefix) (OHN prefix) Lead Soldering Temperature (1/8 in. (3.2 mm) from case for 5 sec. with soldering iron). Power Dissipation, PD Output Current, IO Magnetic Flux Density, B 6V -65C to +170C -40C to +150C -20C to +85C 260C(1) 100 mW 5 mA Unlimited Electrical Characteristics (Over Operating Temperature Range, at Vcc = 5 V, unless otherwise noted) SYMBOL VCC ICC VOQ IO IO SYMBOL PARAMETER Supply Voltage Supply Current Quiescent Voltage Output 2.25 2.10 Sink Current Source Current OHS3150U PARAMETER Operating Temperature Range Sensitivity @ TA = 25 C over TA MIN -40 TYP MAX 150 0.5 -1.0 OHS3151U MIN -40 TYP MAX 150 MIN 4.5 TYP 5.0 5.5 2.5 2.5 MAX UNITS 6.0 10 2.75 2.90 V mA V V mA mA OHN3150U MIN -20 TYP MAX 85 OHN3151U MIN -20 TYP MAX 85 UNITS Vcc = 6 V, IO = 0 mA, B = OG B = OG, TA = 25 C B = OG, TA = -40C to +150C TEST CONDITIONS TA C Sens 2.25 2.0 -2 -10 99 99 95 90 95 2.5 100 100 100 2.75 3.0 8 0 35 105 110 101 101 105 2.25 2.0 -2 -10 99 99 95 90 95 2.5 100 100 100 2.75 3.0 8 0 50 105 110 101 101 105 2.25 2.0 -2 -10 99 99 95 90 95 2.5 100 100 100 2.75 3.0 8 0 35 105 110 101 101 105 2.25 2.0 -2 -10 99 99 95 90 95 2.5 100 100 100 2.75 3.0 8 0 50 105 110 101 101 105 mV/G mV/G % % G % % % % % Sens Change Sens(T) @ TA > 25 C @ TA < 25 C VOQ(T) Sens(V) VOQ(V) +Lin -Lin Sym VOQ Change over TA Ratiometric Sense Change Ratiometric VOQ Change Positive Lin 25 < 25 Negative Lin 25 < 25 Output Symmetry Note: (1) Negative current is defined a coming out of (sourcing) the output. (2) See characteristics definitions for test conditions and calculation formulas. OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. Issue A 06/05 Page 2 of 4 OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Ratiometric Linear Hall-effect Sensor OHN3150U, OHN3151U, OHS3150U, OHS3151U Characteristics Definitions Quiescent voltage Output: With no magnetic field present the device in the quiescent state and the voltage output is approximately equal to one-half the supply voltage (VOQ = VCC / 2) over the operating voltage and temperature range. The change in quiescent voltage output over temperature gives the device's equivalent accuracy and is specified in gauss by the calculation. VOQ (TA) - VOQ (25C) VOQ (T) = ----------------Sens (25C) Sensitivity: A magnetic south pole at, and perpendicular to, the device's symbolized package face will increase the voltage output above the quiescent value. Conversely a magnetic north pole will decrease the voltage output below the quiescent value. This change in voltage output with applied magnetic field is sensitivity and is specified in mV/G by the calculation. VO (+500G) - VO (-500G) Sens = -------------------------- 1000 The change is sensitivity over temperature is specified in percent by the calculation Sens (TA) - Sens (25C) Sens (T) = ----------------------X 100% Sens (25C) Ratiometry: The quiescent voltage output and sensitivity of these ratiometric linear Hall-effect devices are proportional to the supply voltage. The change in quiescent voltage output with supply voltage is specified in percent by the calculation VO (VCC) - VO (5V) VOQ (V) = -------------------- X 100% VCC / 5 V This change in sensitivity with supply voltage is also specified in percent by the calculation VOQ (VCC) / VOQ (5V) Sens (V) = -------------------- X 100% VCC / 5 V Linearity & Symmetry: The ability of the voltage output to vary in constant proportion to the applied magnetic field is linearity and is specified in percent by the calculation VO (+500G) - VOQ + Linearity = -------------------- X 100% 2(VO (250G) -VOQ) - Linearity = VO (-500G) - VOQ -------------------- 2(VO (-250G) -VOQ) X 100% The output is also specified in percent by the calculation VO (500G) - VOQ - Linearity = -------------------- X 100% VOQ -VOQ (-500G) OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Issue A 06/05 Page 3 of 4 Ratiometric Linear Hall-effect Sensor Emitting Diode OHN3150U, OHN3151U, OHS3150U, OHS3151U Output vs Gauss 1000 800 600 400 Typical Gauss 200 0 -200 -400 -600 -800 -1000 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Typical Output (Volts) Icc vs Temperature 8.0 7.0 6.0 Typical Icc (mA) 5.0 4.0 3.0 2.0 1.0 0.0 -60 -40 -20 0 20 40 60 80 100 120 140 160 Temperature (C) OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. Issue A 06/05 Page 4 of 4 OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com 5.0 |
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