Part Number: LM, Maunfacturer: National Semiconductor, Part Family: LM, File type: PDF, Document: Datasheet – semiconductor. LM datasheet, LM circuit, LM data sheet: NSC – Dot/Bar Display Driver,alldatasheet, datasheet, Datasheet search site for Electronic. LM datasheet, LM circuit, LM data sheet: TI1 – LM Dot/Bar Display Driver,alldatasheet, datasheet, Datasheet search site for Electronic.
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The LM is very versatile. The outputs can drive LCDs. The LM is a monolithic integrated circuit that senses. LEDs of any color. Multiple devices can be cascaded for a.
Useful in other applications are the linear LM and. One pin datssheet the display from a bar. LED current drive is regulated. The whole display system can operate from a.
LM3916 Datasheet PDF
Fast responding electronic VU meter. The IC dxtasheet an adjustable voltage reference and an. Bar or dot display mode externally selectable by user. Expandable to displays of 70 dB. Further, it needs no protection against.
Internal voltage reference from 1. The input buffer drives 10 individual com. Operates with single supply of 3V to 25V. Inputs operate down to ground. Output current programmable from 1 mA to 30 mA. Audio applications include average or peak level indicators. Replacing conventional meters with an. Outputs are current regulated, open collectors. LED bar graph results in a faster responding, more rugged.
The internal step divider is floating and can be. Datashee LM is extremely easy to apply. The LM is rated for operation from 0? One more resistor programs the full-scale anywhere from. Capacitor C1 is required if leads to dtasheet LED supply are 6″ or longer. Circuit as shown is wired for dot mode.
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For bar mode, connect pin lm39916 to pin 3. Input Signal Overvoltage Note 4. Distributors for availability and specifications. Power Dissipation Note 6. Voltage on Output Drivers. Electrical Characteristics Notes 2, 4. Offset Voltage, Buffer and First Comparator.
Input Bias Current at Pin 5. No Change in Display. Total, Pin 6 to 4. Relative Accuracy Input Change. Between Any Two Threshold Points. Output Voltage Change with Temperature.
I LED 2 mA. Output Leakage, Each Collector. Bar Mode Note 5. Dot Mode Note 5. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit. Unless otherwise stated, all specifications apply with the following conditions: For higher power dissipations, pulse testing is used.
At lower full-scale voltages, buffer and. See table for threshold voltages. Pin 5 input current must be limited to? The addition of a 39k resistor in series with pin 5 allows? LED 10 pin 10 output current is.
The maximum junction temperature of the LM is ? Devices must be derated for operation at elevated temperatures.
Junction to ambient thermal.
Signal Range Pin 5. The simplified LM block diagram is included to give the. A high input imped. The ability to modu. In the example illustrated, the resistor string is connected to. An internal feedback loop regulates the tran. As the input voltage. Output current is held at about 10 times the.
The reference is designed to be adjustable and develops a. The reference voltage is impressed across. R2 giving an output voltage of: Outputs may be run in saturation with no adverse effects. F tantalum or 10? F aluminum electrolytic capacitor. Pin 9, the Mode Select input, permits chaining of multiple. Wire Mode Select pin 9 directly to pin. A current max from the adjust terminal. Leave the Mode Select. For correct operation, reference load current should be be.
Connect datasjeet 9 of the first. A and datsheet mA. Load capacitance should be less.
LM Datasheet(PDF) – TI store
Continue connecting pin 9 of lower input. The last LM driver in the chain will have pin 9. A feature not completely illustrated datqsheet the block diagram is. All previous drivers should have a 20k resistor in. The current drawn out of the. Mode Pin Functional Description. In order for display to make sense when multiple drivers are.
This pin actually performs two functions.
Refer to the simpli. The connection for cascading in.
Block Datasueet of Mode Pin Function. As long as the input signal voltage is below the threshold of. Pin 9 of driver 1 thus sees. This condition is sensed by comparator C2, refer. This forces the output of C2 low. V LED is sensed via the 20k resistor connected to pin