Overview
The LM386N-3/NOPB is a low-voltage audio power amplifier produced by Texas Instruments. Designed for battery-operated devices, this IC is widely used in applications requiring low power consumption and minimal external components. Its market positioning targets consumer electronics, portable audio devices, and small-scale audio amplification systems. The LM386N-3/NOPB stands out for its simplicity, cost-effectiveness, and reliable performance, making it a popular choice among hobbyists and professionals alike.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 4-12 | V | Operational range |
| Output Power | 0.7 | W | @ 9V, 8Ω load |
| Gain | 20-200 | - | Adjustable with external components |
| Quiescent Current | 4 | mA | Typical |
| THD (Total Harmonic Distortion) | 0.2 | % | @ 6V, 1kHz |
| Operating Temperature | 0 to +70 | °C | Commercial range |
| Package | PDIP-8 | - | Plastic Dual In-Line Package |
Key Features
- Low Voltage Operation: Operates efficiently at supply voltages as low as 4V, making it ideal for battery-powered devices.
- Adjustable Gain: Gain can be set between 20 and 200 using external components, providing flexibility for various applications.
- Minimal External Components: Requires only a few external components, simplifying circuit design and reducing costs.
- Low Quiescent Current: Consumes minimal power when idle, enhancing battery life in portable devices.
- Wide Operating Temperature Range: Suitable for commercial applications with a temperature range of 0°C to +70°C.
Applications
The LM386N-3/NOPB is widely used in various audio amplification applications, including:
- Portable Audio Devices: Amplifiers for radios, MP3 players, and other portable audio equipment.
- Consumer Electronics: Small-scale audio systems, intercoms, and toys.
- Hobbyist Projects: DIY audio amplifiers and experimental circuits due to its simplicity and low cost.
- Communication Systems: Low-power audio amplification in communication devices.
Q & A
1. What is the maximum supply voltage for the LM386N-3/NOPB?
The maximum supply voltage is 12V.
2. Can the gain of the LM386N-3/NOPB be adjusted?
Yes, the gain can be adjusted between 20 and 200 using external components.
3. What is the typical output power of the LM386N-3/NOPB?
The typical output power is 0.7W at 9V with an 8Ω load.
4. Is the LM386N-3/NOPB suitable for battery-powered devices?
Yes, its low voltage operation and low quiescent current make it ideal for battery-powered applications.
5. What is the operating temperature range of the LM386N-3/NOPB?
The operating temperature range is 0°C to +70°C.
6. How many external components are required for basic operation?
Only a few external components are needed, making it easy to integrate into circuits.
7. What is the package type of the LM386N-3/NOPB?
It comes in a PDIP-8 (Plastic Dual In-Line Package).
8. What is the typical quiescent current of the LM386N-3/NOPB?
The typical quiescent current is 4mA.
9. Can the LM386N-3/NOPB be used in automotive applications?
No, it is designed for commercial applications and is not suitable for automotive environments.
10. What is the THD (Total Harmonic Distortion) of the LM386N-3/NOPB?
The THD is 0.2% at 6V and 1kHz.
