LM386N-4/NOPB vs MAX98357AEWL+T
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | Maxim Integrated |
| Description | IC AMP CLASS AB MONO 1W 8DIP | IC AMP CLASS D MONO 3.2W 9WLP |
| Package | Cut Tape (CT) | Tape & Reel (TR) |
| Series | - | - |
| Type | Class AB | Class D |
| Features | - | Depop, Short-Circuit and Thermal Protection |
| Voltage - Supply | 5V ~ 18V | 2.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole | Surface Mount |
| Package / Case | 8-DIP (0.300\", 7.62mm) | 9-WFBGA, WLBGA |
| Supplier Device Package | 8-PDIP | 9-WLP (1.26x1.26) |
| Output Type | 1-Channel (Mono) | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 1W x 1 @ 32Ohm | 3.2W x 2 @ 4Ohm |
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1. 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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2. Does the audio amplifier need to match the impedance of the speakers?
Yes, the output impedance of the audio amplifier should match the impedance of the speaker. Typically speakers have an impedance of 4Ω, 8Ω or 16Ω. Matching the impedance ensures that the amplifier delivers maximum power and the best sound quality from the speaker.
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3. How can I improve the thermal performance of my audio amplifier?
Audio amplifiers generate heat when they operate, especially Class A and Class AB amplifiers. Ways to improve heat dissipation include using a larger heat sink, adding a fan, or using a more efficient Class D amplifier. A good thermal design will improve the performance and life of the amplifier.
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4. What should the frequency response range of an audio amplifier be?
The frequency response range of a good quality audio amplifier is usually between 20Hz and 20kHz, which is the typical frequency range that the human ear can hear. A wider frequency response ensures that the audio amplifier can accurately reproduce both low and high frequency details.
