LM3916N National Semiconductor, LM3916N Datasheet
LM3916N
Specifications of LM3916N
LM3916
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LM3916N Summary of contents
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... Directly drives TTL or CMOS n The internal 10-step divider is floating and can be referenced to a wide range of voltages The LM3916 is rated for operation from 0˚C to +70˚C. The LM3916N-1 is available in an 18-lead molded DIP package. DS007971 January 2000 ± 35V without damage or false outputs ...
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Typical Applications Notes: Capacitor C1 is required if leads to the LED supply are 6" or longer. Circuit as shown is wired for dot mode. For bar mode, connect pin 9 to pin 3. V dissipation. www.national.com 0V to 10V ...
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... Absolute Maximum Ratings 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) Supply Voltage Voltage on Output Drivers Electrical Characteristics Parameter COMPARATORS Offset Voltage, Buffer and First Comparator Offset Voltage, Buffer and Any Other Comparator / ∆ ...
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Electrical Characteristics Parameter Standby Supply Current (All Outputs Off) 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 ...
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Typical Performance Characteristics Supply Current vs Temperature Reference Voltage vs Temperature LED Current-Regulation Dropout 00797135 00797137 00797139 5 Operating Input Bias Current vs Temperature 00797136 Reference Adjust Pin Current vs Temperature 00797138 LED Driver Saturation Voltage 00797140 www.national.com ...
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Typical Performance Characteristics Input Current Beyond Signal Range (Pin 5) LED Driver Current Regulation Common-Mode Limits www.national.com (Continued) 00797141 Total Divider Resistance 00797143 Output Characteristics 00797145 6 LED Current vs Referenced Loading 00797142 vs Temperature 00797144 00797146 ...
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Block Diagram (Showing Simplest Application) 7 00797104 www.national.com ...
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Functional Description The simplified LM3916 block diagram is included to give the general idea of the circuit’s operation. A high input imped- ance buffer operates with signals from ground to 12V, and is protected against reverse and overvoltage signals. The ...
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Mode Pin Functional Description This pin actually performs two functions. Refer to the simpli- fied block diagram below. Block Diagram of Mode Pin Function *High for bar DOT OR BAR MODE SELECTION The voltage at pin 9 is sensed by ...
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Mode Pin Functional Description FIGURE 2. Cascading Drivers in Dot Mode with Pin 1 of Driver #2 Unused OTHER DEVICE CHARACTERISTICS The LM3915 is relatively low-powered itself, and since any number of LEDs can be powered from about 3V, it ...
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Application Hints (Continued) adjusted for the correct output when a low-level AC signal ( mV) is applied, rather than adjusting for zero output with zero input. *DC Couple FIGURE 3. Half-Wave Peak Detector D1, D2: 1N914 or 1N4148 ...
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Application Hints (Continued) damped second order response with a resonant frequency Design Equations FIGURE 7. Full-Wave Average Detector to VU Meter Specifications* Peak Program Meter The VU meter, originally intended for signals sent via tele- phone lines, has shortcomings when ...
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Application Hints (Continued) LM3916’s reference 16 dB higher or 7.89V. Variation in the two on-chip references and resistor tolerance may cause a ± error in the − −13 dB transition. If this is objectionable, R2 can ...
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Application Hints (Continued) To extend this approach to get display, another amplification must be placed in the signal path ahead of the lowest LM3915. Extreme care is required as the lowest LM3915 displays input ...
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Application Hints (Continued ≤ I ≤ LED REF FIGURE 12. Independent Adjustment of Reference Voltage and LED Intensity for Multiple Drivers 1.25V ≤ V ≤ 10V REF 1.5 mA ≤ I ≤ 25 ...
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Other Applications (Continued) FIGURE 14 10V VU Meter with Smooth Transitions www.national.com 00797121 16 ...
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Typical Applications (Continued) ± R7 thru R15: 10k 10% D1, D2: 1N914 or 1N4148 *Half-wave peak detector. See Application Hints. Driving Vacuum Fluorescent Display 19 00797124 www.national.com ...
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Typical Applications Indicator and Alarm, Full-Scale Changes Display From Dot to Bar *The input to the Dot-Bar switch may be taken from cathodes of other LEDs. Display will change to bar as soon as the LED so selected begins to ...
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Typical Applications (Continued) Displaying Additional Levels 23 00797128 www.national.com ...
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Typical Applications Operating with a High Voltage Supply (Dot Mode Only) The LED currents are approximately 10 mA, and LM3916 outputs operate in saturation for minimum dissipation. *This point is partially regulated and decreases in voltage with temperature. Voltage requirements ...
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Typical Applications (Continued) Full-scale causes the full bar display to flash. If the junction of R1 and C1 is connected to a different LED cathode, the display will flash when that LED lights, and at any higher input signal. Driving ...
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... Dual-In-Line Package Top View Order Number LM3916N-1 See NS Package Number NA18A Order Number LM3916N * See NS Package Number N18A *Discontinued, Life Time Buy date 12/20/99 measured at the current source outputs. As the forward voltage of an LED does not change significantly with a small change in forward current, this is equivalent to changing the voltage at the LED anodes by the same amount ...
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... Note: Unless otherwise specified. 1. Standard Lead Finish: 200 microinches /5.08 micrometer minimum lead/tin 37/63 or 15/85 on alloy 42 or equivalent or copper 2. Reference JEDEC registration MS-001, Variation AC, dated May 1993. Molded Dual-In-Line Package (N) Order Number LM3916N-1 NS Package Number NA18A 27 www.national.com ...
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... Deutsch Tel: +49 (0) 69 9508 6208 English www.national.com Français Tel: +33 ( 8790 Molded Dual-In-Line Package (N) Order Number LM3916N * NS Package Number N18A *Discontinued, Life Time Buy date 12/20/ critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness ...