仕様
| 属性 | 値 |
| 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 |
概要
Description
The LM386M-1 is a low-voltage audio power amplifier designed for applications in consumer electronics where space and power efficiency are crucial. It operates on a wide voltage range from 4V to 12V, making it versatile for battery-powered devices. The LM386M-1 can deliver around 0.325 watts of output power into an 8-ohm load, ideal for driving small speakers.
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.
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
The LM386M-1 is a low voltage audio power amplifier. Equivalent products include the LM386N-1 (different package type) and other similar low voltage audio amplifiers like the TDA2822, NJM386, or NTE823. These alternatives offer comparable functionality, but ensure to check the specific requirements like pin configuration, voltage range, and package type to confirm compatibility with your project.
Features
The LM386M-1 is a low-voltage audio power amplifier designed for consumer applications. Here are its key 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.
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
The LM386M-1 is a low-voltage audio power amplifier with an 8-pin configuration. Its primary function is to amplify audio signals, making it suitable for small battery-powered devices. Here is a brief overview of its pin functions:
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.
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
The LM386M-1 is a low voltage audio power amplifier manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and manufactures a wide range of integrated circuits (ICs) for various applications, including analog, digital, embedded processing, and power management solutions. TI is known for its innovation and extensive product portfolio, serving industries like automotive, industrial, consumer electronics, communications, and more. The company is headquartered in Dallas, Texas, and emphasizes research and development to create technology that enables customer advancements.
Application
The LM386M-1 is a low-voltage audio power amplifier commonly used in various applications. Its key areas include:
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.
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.
Package
The LM386M-1 is typically available in an 8-pin surface-mount SOIC (Small Outline Integrated Circuit) package. This package type is compact and suitable for applications requiring a small footprint on a printed circuit board.
