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LM3915 Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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LM3915 Datasheet(HTML) 4 Page - National Semiconductor (TI) |
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4 / 25 page  Electrical Characteristics (Notes 2, 4) (Continued) Parameter Conditions (Note 2) Min Typ Max Units SUPPLY CURRENT Standby Supply Current (All Outputs Off) V + = +5V, I L(REF) = 0.2 mA V + = +20V, I L(REF) = 1.0 mA 2.4 4.2 mA 6.1 9.2 mA Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good indication of device performance. Note 2: Unless otherwise stated, all specifications apply with the following conditions: 3VDC ≤ V + ≤ 20 VDC −0.015V ≤ VRLO ≤ 12 VDC TA = 25˚C, IL(REF) = 0.2 mA, pin 9 connected to pin 3 (bar mode). 3VDC ≤ VLED ≤ V + VREF,VRHI,VRLO ≤ (V + − 1.5V) For higher power dissipations, pulse testing is used. −0.015V ≤ VRHI ≤ 12 VDC 0V ≤ VIN ≤ V+ − 1.5V Note 3: Accuracy is measured referred to 0 dB = + 10.000 VDC at pin 5, with + 10.000 VDC at pin 6, and 0.000 VDC at pin 4. At lower full scale voltages, buffer and comparator offset voltage may add significant error. See table for threshold voltages. Note 4: Pin 5 input current must be limited to ±3 mA. The addition of a 39k resistor in series with pin 5 allows ±100V signals without damage. Note 5: Bar mode results when pin 9 is within 20 mV of V+. Dot mode results when pin 9 is pulled at least 200 mV below V+. LED #10 (pin 10 output current) is disabled if pin 9 is pulled 0.9V or more below VLED. Note 6: The maximum junction temperature of the LM3915 is 100˚C. Devices must be derated for operation at elevated temperatures. Junction to ambient thermal resistance is 55˚C/W for the molded DIP (N package). Threshold Voltage (Note 3) Output dB Min Typ Max Output dB Min Typ Max 1 −27 0.422 0.447 0.531 6 −12 2.372 2.512 2.819 2 −24 0.596 0.631 0.750 7 −9 3.350 3.548 3.825 3 −21 0.841 0.891 1.059 8 −6 4.732 5.012 5.309 4 −18 1.189 1.259 1.413 9 −3 6.683 7.079 7.498 5 −15 1.679 1.778 1.995 10 0 9.985 10 10.015 www.national.com 4 |
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