LM4863LQ/NOPB vs BU7839GVW-E2
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | Rohm Semiconductor |
| Description | IC AMP CLASS AB STER 3.2W 24WQFN | IC AMP CLASS D STEREO 24BGA |
| Package | Tape & Reel (TR) | Cut Tape (CT) |
| Series | Boomer® | - |
| Type | Class AB | - |
| Features | Depop, Shutdown, Thermal Protection | - |
| Voltage - Supply | 2V ~ 5.5V | - |
| Operating Temperature | -40°C ~ 85°C (TA) | - |
| Mounting Type | Surface Mount | - |
| Package / Case | 24-WFQFN Exposed Pad | - |
| Supplier Device Package | 24-WQFN (4x5) | - |
| Output Type | 2-Channel (Stereo) with Stereo Headphones | - |
| Max Output Power x Channels @ Load | 3.2W x 2 @ 3Ohm; 440mW x 2 @ 8Ohm | - |
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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. 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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3. What is the signal-to-noise ratio (SNR) of an audio amplifier?
Signal-to-noise ratio (SNR) is a measure of the ratio of the audio signal to the background noise, with higher values indicating less noise in the audio signal. A high SNR usually means clearer sound output.
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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.
