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LM386 Audio Amplifier IC

  • Operating voltage range: +4.75 to +5.25V
  • Recommended operating voltage: +5V
  • Maximum supply voltage:7V
  • Maximum current allowed to draw through each gate output: 8mA
  • TTL outputs
  • Low power consumption
  • Typical Rise Time: 18ns
  • Typical Fall Time: 18ns
  • Operating temperature:0°C  to 70°C
  • Storage Temperature: -65°C  to 150°C
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The LM386 is a low power audio frequency amplifier which is very commonly used in small audio amplifiers. The IC consumes very less power and hence can be operated using a 9V battery easily. It can easily drive an 8-ohm speakerwith a variable gain of 20 to200. Volume control and gain control is also possible in this. The IC comes in a 8-pin PDIP package and requires very less components to function hence it is highly easy to use.

So, if you are looking for an audio amplifier IC which can be powered using a battery for a portable application to drive an 8-ohm speaker then this IC might be the right choice for you. For driving heavy speakers you have to use the power amplifier ICs.

LM386 Pin Configuration

Pin NumberPin NameDescription
1,8GAINUsed to set the gain of the IC by connecting to a Capacitor
2Inverting Input (IN-)The Inverting Pin of amplifier is normally grounded
3Non-Inverting Input (IN+)The Non-Inverting pin is provided with the audio signal
4GroundThe ground pin is connected to the ground of the system
5VoutProvides amplified audio output, connected to speaker
6Vss/VccConnected to power
7BypassBypass pin is used for connecting a decoupling capacitor

 

LM386 Audio amplifier features and specifications

  • Supply Voltage: 4-15V
  • Quiescent Power: 24mW @ 6V
  • Analog input voltage 0.4V (maximum)
  • Voltage Gain: 20 to 200 (26dB to 46dB)
  • PSRR: 50dB
  • Speaker impedance 4Ω
  • Available in 8-Pin PDIP,SOIC and VSSOP packages
SKU: 0421 Categories: , , Tags: , , ,

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