BU7839GVW-E2 vs LM48823TL/NOPB
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Rohm Semiconductor | National Semiconductor |
| Description | IC AMP CLASS D STEREO 24BGA | LM48823 MONO, BRIDGE-TIED LOAD, |
| Package | Cut Tape (CT) | Bulk |
| Series | - | - |
| Type | - | Class AB |
| Features | - | Depop, I²C, Shutdown, Volume Control |
| Voltage - Supply | - | 2V ~ 4.5V |
| Operating Temperature | - | -40°C ~ 85°C (TA) |
| Mounting Type | - | Surface Mount |
| Package / Case | - | 16-WFBGA, DSBGA |
| Supplier Device Package | - | 16-DSBGA (2.5x2.12) |
| Output Type | - | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | - | - |
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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. 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.
