BH7826FVM-TR vs MAX98357BEWL+T
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Rohm Semiconductor | Maxim Integrated |
| Description | IC AMP CLASS AB MONO 500MW 8MSOP | IC AMP CLASS D MONO 3.2W 9WLP |
| Package | Bulk | -Reel® |
| Series | - | - |
| Type | - | Class D |
| Features | - | Depop, Short-Circuit and Thermal Protection |
| Voltage - Supply | - | 2.5V ~ 5.5V |
| Operating Temperature | - | -40°C ~ 85°C (TA) |
| Mounting Type | - | Surface Mount |
| Package / Case | - | 9-WFBGA, WLBGA |
| Supplier Device Package | - | 9-WLP |
| Output Type | - | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | - | 3.2W x 2 @ 4Ohm |
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1. 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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2. What is the Total Harmonic Distortion (THD) of an audio amplifier?
Total Harmonic Distortion (THD) is the distortion component introduced by an audio amplifier during the signal amplification process. the lower the THD, the closer the amplified audio signal will be to the original signal, and usually high quality audio amplifiers have a THD value of less than 1%.
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3. 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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4. 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.
