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S7183 Datasheet(PDF) 7 Page - Hamamatsu Corporation |
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S7183 Datasheet(HTML) 7 Page - Hamamatsu Corporation |
7 / 8 page Photo IC diodes S7183, S7184 7 Operating voltage, output characteristics RL (external resistor) IL Photo IC diode Rin=150 Ω ± 20% (internal protection resistor) Vcc KPICC0128EC [Figure 1] Measurement circuit example Figure 2 shows the photocurrent vs. reverse voltage characteristics (light source: LED) for the measurement circuit example in Figure 1. The output curves are shown for illuminance levels. The output curves rise from a reverse voltage (rising voltage) of approximately 0.7 V (±10%). To protect the photo IC diode from excessive current, a 150 Ω (±20%) protection resistor is inserted in the circuit. Reverse voltage VR when the photo IC diode is saturated is the sum of Vbe(ON) and the voltage drop across the protection resistor Rin [Equation (1)]. VR = Vbe(ON) + IL × Rin ............ (1) The photodiode’s reverse voltage (VR) is expressed by Equation (2) according to the voltage drop across the external resistor. This is indicated as load lines in Figure 2. VR = Vcc - IL × RL ............ (2) In Figure 2, the intersections between the output curves and the load lines are the saturation points. From these points, the maximum detectable light level can be specified. Since the maximum light level is determined by the supply voltage (Vcc) and load resistance (RL), adjust them according to the operating conditions. Note: The temperature characteristics of Vbe(ON) is approximately -2 mV/°C, and that of the protection resistor is approximately 0.1%/°C. |
Similar Part No. - S7183_15 |
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Similar Description - S7183_15 |
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