LM386N-4/NOPB vs NJM2113M
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | NJR Corporation/NJRC |
| Description | IC AMP CLASS AB MONO 1W 8DIP | IC AMP CLASS AB MONO 400MW 8DMP |
| Package | Cut Tape (CT) | Tape & Reel (TR) |
| Series | - | - |
| Type | Class AB | Class AB |
| Features | - | Standby |
| Voltage - Supply | 5V ~ 18V | 2V ~ 16V |
| Operating Temperature | 0°C ~ 70°C (TA) | -20°C ~ 75°C (TA) |
| Mounting Type | Through Hole | Surface Mount |
| Package / Case | 8-DIP (0.300\", 7.62mm) | 8-SOIC (0.209\", 5.30mm Width) |
| Supplier Device Package | 8-PDIP | 8-DMP |
| Output Type | 1-Channel (Mono) | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 1W x 1 @ 32Ohm | 400mW x 1 @ 100Ohm |
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1. What is an audio amplifier and what does it do?
An audio amplifier is a device that amplifies an audio signal, such as music or speech, to a higher voltage or current level to drive speakers or headphones, ensuring that the sound remains clear and accurate when played at higher volumes.
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2. What is a power amplifier and how is it different from an audio amplifier?
A power amplifier is a type of audio amplifier designed to drive high-power loads such as speakers. It is capable of amplifying audio signals to a sufficient power output to drive speakers to produce greater volume.
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3. How to choose a suitable audio amplifier?
When choosing an audio amplifier, factors such as output power, total harmonic distortion (THD), signal-to-noise ratio (SNR), efficiency, impedance matching (speaker impedance), and power consumption should be taken into consideration to ensure that it is well-matched with the speakers and audio source equipment.
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4. What is a Class D audio amplifier and what are its advantages?
Class D audio amplifiers work through Pulse Width Modulation (PWM) technology and have extremely high efficiency (typically up to 90% or higher), making them suitable for use in portable audio equipment or high-efficiency sound systems. It generates less heat because it reduces energy consumption.
