Audio Amplifier With LM380

Aplication Of Audio Amplifier With LM380

Uses include simple phonograph amplifiers, intercoms, line drivers, teaching machine outputs, alarms, ultrasonic drivers, TV sound systems, AM-FM radio, small servo drivers, power converters, etc.

The LM380 is a power audio amplifier for consumer applications. In order to hold system cost to a minimum, gain is internally fixed at 34 dB. A unique input stage allows ground referenced input signals. The output automatically selfcenters to one-half the supply voltage. The output is short circuit proof with internal thermal limiting. The package outline is standard dual-in-line. The LM380N uses a copper lead frame. The center three pins on either side comprise a heat sink. This makes the device easy to use in standard PC layouts.

Features Of Audio Amplifier With LM380

• Wide supply voltage range: 10V-22V
• Low quiescent power drain: 0.13W (VS= 18V)
• Voltage gain fixed at 50
• High peak current capability: 1.3A
• Input referenced to GND
• High input impedance: 150kΩ
• Low distortion
• Quiescent output voltage is at one-half of the supply voltage
• Standard dual-in-line package

Circuit Of Audio Amplifier With LM380