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LM3915 Datasheet(PDF) 3 Page - National Semiconductor (TI) |
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LM3915 Datasheet(HTML) 3 Page - National Semiconductor (TI) |
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3 / 25 page  Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Dissipation (Note 6) Molded DIP(N) 1365 mW Supply Voltage 25V Voltage on Output Drivers 25V Input Signal Overvoltage (Note 4) ±35V Divider Voltage −100 mV to V + Reference Load Current 10 mA Storage Temperature Range −55˚C to +150˚C Lead Temperature (Soldering, 10 sec.) 260˚C Electrical Characteristics (Notes 2, 4) Parameter Conditions (Note 2) Min Typ Max Units COMPARATOR Offset Voltage, Buffer and First Comparator 0V ≤ V RLO =VRHI ≤ 12V, I LED =1mA 310 mV Offset Voltage, Buffer and Any Other Comparator 0V ≤ V RLO =VRHI ≤ 12V, I LED =1mA 315 mV Gain ( ∆I LED/ ∆V IN)IL(REF) = 2 mA, ILED = 10 mA 3 8 mA/mV Input Bias Current (at Pin 5) 0V ≤ V IN ≤ (V+ − 1.5V) 25 100 nA Input Signal Overvoltage No Change in Display −35 35 V VOLTAGE-DIVIDER Divider Resistance Total, Pin 6 to 4 16 28 36 k Ω Relative Accuracy (Input Change Between Any Two Threshold Points) (Note 3) 2.0 3.0 4.0 dB Absolute Accuracy at Each Threshold Point (Note 3) V IN = −3, −6 dB −0.5 +0.5 dB V IN = −9 dB −0.5 +0.65 dB V IN = −12, −15, −18 dB −0.5 +1.0 dB V IH = −21, −24, −27 dB −0.5 +1.5 dB VOLTAGE REFERENCE Output Voltage 0.1 mA ≤ I L(REF) ≤ 4 mA, V + =V LED =5V 1.2 1.28 1.34 V Line Regulation 3V ≤ V+ ≤ 18V 0.01 0.03 %/V Load Regulation 0.1 mA ≤ I L(REF) ≤ 4 mA, V + =V LED =5V 0.4 2 % Output Voltage Change with Temperature 0˚C ≤ T A ≤ +70˚C, I L(REF) = 1 mA, V + =V LED =5V 1% Adjust Pin Current 75 120 µA OUTPUT DRIVERS LED Current V + =V LED = 5V, IL(REF) = 1 mA 7 10 13 mA LED Current Difference (Between Largest and Smallest LED Currents) V LED = 5V, ILED =2mA V LED = 5V, ILED 20 mA 0.12 0.4 mA 1.2 3 LED Current Regulation 2V ≤ V LED ≤ 17V, I LED =2mA I LED =20mA 0.1 0.25 mA 13 Dropout Voltage I LED(ON) =20mA, @ VLED = 5V, ∆I LED =2mA 1.5 V Saturation Voltage I LED = 2.0 mA, IL(REF) = 0.4 mA 0.15 0.4 V Output Leakage, Each Collector (Bar Mode) (Note 5) 0.1 10 µA Output Leakage Pins 10–18 (Dot Mode) (Note 5) 0.1 10 µA Pin 1 60 150 450 µA www.national.com 3 |
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