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LM390N Integrated Circuit 14Pin

ZAR 13.70 ZAR 11.91

In stock

SKU

INC-0347-C09

Description:

The LM390N is a compact 1-watt audio power amplifier designed for battery-operated systems. Developed by National Semiconductor (now part of Texas Instruments), it’s optimized for low-voltage operation and minimal external components—making it a favorite for portable audio devices like radios, intercoms, and tape players. Its internally set gain and ground-referenced inputs simplify design, while still allowing for gain customization via external components.

Specifications:

Function: Battery-operated audio power amplifier
Package: 14-pin DIP (Dual In-line Package)
Output Power: 1W into low-impedance loads
Supply Voltage Range: 4V to 9V (optimized for 6V–9V operation)
Voltage Gain: Internally set to 20 (26dB); adjustable up to 200 (46dB)
Input Type: Ground-referenced
Output Bias: Self-centering at half the supply voltage
Total Harmonic Distortion (THD): ~1% at 1kHz
Bandwidth: ~300kHz
Quiescent Current: ~4mA
Applications:
-AM/FM radio amplifiers
-Portable tape players
-Intercoms and TV sound systems
-Lamp and line drivers
-Ultrasonic and servo drivers