Texas Instruments LM386M-1 325mW Single Channel Audio Amplifier IC SOIC-8
Texas Instruments LM386M-1 325mW single channel audio amplifier IC in an 8-pin SOIC package. Gain of 20, adjustable to 200. Supply 4V to 12V.
The Texas Instruments LM386M-1 Audio Amplifier IC delivers 325mW output power into an 8-ohm load and is supplied in a compact 8-pin SOIC surface-mount package.
Overview
The gain is internally set to 20, which reduces the need for external components. For higher amplification, the gain can be increased to any value from 20 to 200 by adding an external resistor and capacitor between pins 1 and 8. The inputs are ground referenced, and the output automatically biases to half the supply voltage.
Key Features
- Output power: 325mW into an 8-ohm load
- Quiescent power drain: 24mW from a 6-volt supply
- Supply voltage range: 4V to 12V
- Amplifier class: AB
- Single mono channel configuration
- Optimised for 8-ohm speakers
- Manufactured without antimony or bromine (no Sb/Br)
Package and Dimensions
The LM386M-1 uses a SOIC (Small Outline Integrated Circuit) surface-mount package with 8 pins, suited to space-constrained PCB designs. Dimensions are 33 mm (width) x 43 mm (height) x 15 mm (depth), and the weight is 0.215 grams.
Operation
The operating temperature range is 0°C to 70°C. Its low power consumption makes it suited to battery-powered devices where extended battery life is important.
- Low voltage consumer applications
- Battery-powered devices
- Space-constrained PCB designs
- Audio amplification with 8-ohm speakers
- Output Power: 325mW into an 8-ohm load
- Amplifier Class: AB
- Channels: Single mono channel
- Load Impedance: Optimised for 8-ohm speakers
- Gain: 20 (internally set), adjustable from 20 to 200 using an external resistor and capacitor between pins 1 and 8
- Inputs: Ground referenced
- Output Bias: Automatically biases to half the supply voltage
- Supply Voltage: 4V to 12V
- Quiescent Power Drain: 24mW from a 6-volt supply
- Operating Temperature Range: 0°C to 70°C
- Package: SOIC surface-mount, 8 pins
- Width: 33 mm
- Height: 43 mm
- Depth: 15 mm
- Weight: 0.215 grams
- Special Feature: Manufactured without antimony or bromine (no Sb/Br)
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