LM48822TL/NOPB vs TPA0102PWPR
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | National Semiconductor | Texas Instruments |
| Description | LM48822 GND-REF ULTRA HIGH PSRR | IC AMP AB STEREO 1.5W 24HTSSOP |
| Package | Bulk | Bulk |
| Series | Boomer® | - |
| Type | Class AB | Class AB |
| Features | Depop, Differential Inputs, I²C, Mute, Shutdown, Volume Control | Input Multiplexer, Mute, Shutdown |
| Voltage - Supply | 2.4V ~ 5.5V | 3V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 16-WFBGA, DSBGA | 24-TSSOP (0.173\", 4.40mm Width) Exposed Pad |
| Supplier Device Package | 16-DSBGA (2.5x2.12) | 24-HTSSOP |
| Output Type | Headphones, 2-Channel (Stereo) | 2-Channel (Stereo) with Stereo Headphones |
| Max Output Power x Channels @ Load | 40mW x 2 @ 32Ohm | 1.5W x 2 @ 4Ohm |
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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 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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4. 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.
