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LM386M-1
+NomenclatureIC AMP CLASS AB MONO 325MW 8SOIC
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FabricantTexas Instruments
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Pièce fabricant #LM386M-1
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Package 8-SOIC
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En stock2284
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Spécifications
| Attribut | Valeur |
| Package | Bulk,Tube |
| ProductStatus | Obsolete |
| Type | Class AB |
| OutputType | 1-Channel (Mono) |
| MaxOutputPowerxChannels@Load | 325mW x 1 @ 8Ohm |
| Voltage-Supply | 4V ~ 12V |
| MountingType | Surface Mount |
| OperatingTemperature | 0°C ~ 70°C (TA) |
| SupplierDevicePackage | 8-SOIC |
Présentation
Description
Key features include a gain of 20, which can be increased to 200 using external components, allowing for flexibility in audio amplification applications. The LM386M-1 is known for its low power consumption, making it suitable for portable applications. It also has a low distortion level, ensuring clear audio output.
Packaged in an 8-pin mini-DIP (dual in-line package), the LM386M-1 is compact and easy to integrate into circuit designs. Its simplicity and efficiency make it popular for use in radios, guitar amplifiers, intercoms, TV sound systems, and hobby projects. The LM386M-1 requires minimal additional components, which helps in keeping the overall circuit design straightforward and cost-effective.
Equivalent
Features
1. Low Voltage Operation: It operates in the range of 4V to 12V, making it suitable for battery-powered devices.
2. Output Power: Delivers about 325mW into an 8-ohm load, sufficient for small audio applications.
3. Low Quiescent Current: Consumes minimal power when idle, around 4mA, enhancing power efficiency.
4. Minimal External Components: Requires very few additional components for operation, simplifying circuit design.
5. Gain Adjustability: The gain can be set from 20 to 200 via external components, allowing flexibility in applications.
6. Wide Bandwidth: Offers a bandwidth of approximately 300 kHz.
7. Low Distortion: Provides low total harmonic distortion for clear audio output.
8. Compact Packaging: Available in an 8-pin SOIC package, suitable for compact designs.
9. Built-in Features: Includes thermal shutdown protection and a low noise design to minimize interference.
These features make the LM386M-1 an ideal choice for simple audio amplification needs in portable devices.
Pinout
1. Pin 1 (Gain 1): Used with Pin 8 to set the gain. The default gain is 20, which can be increased to 200 by connecting a capacitor between Pin 1 and Pin 8.
2. Pin 2 (Inverting Input): The inverting input terminal for the audio signal.
3. Pin 3 (Non-Inverting Input): The non-inverting input terminal for the audio signal.
4. Pin 4 (Ground): Ground connection.
5. Pin 5 (Output): The output terminal for the amplified audio signal.
6. Pin 6 (V+): Supply voltage terminal, typically ranging from 4V to 12V.
7. Pin 7 (Bypass): Optional bypass terminal for a capacitor to improve power supply rejection ratio.
8. Pin 8 (Gain 2): Used with Pin 1 to adjust the gain.
The LM386M-1 is widely used in audio applications due to its simplicity, low power consumption, and ability to operate on low voltage.
Manufacturer
Application
1. Portable Audio Devices: Used in battery-powered devices like radios and portable speakers due to its low power requirements.
2. Intercoms: Suitable for amplifying audio signals in simple intercom systems.
3. TV Sound Systems: Enhances audio output in small television audio circuits.
4. Hobby Projects: Popular among DIY electronics enthusiasts for building small audio amplifiers.
5. Musical Instruments: Employed in practice amps for electric guitars or other electronic instruments.
6. Hearing Aids: Used in basic designs for audio amplification in hearing devices.
Its versatility and cost-effectiveness make it ideal for small-scale audio applications.