LM4875MM/NOPB vs TPA731DGNR
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | Texas Instruments |
| Description | IC AMP CLASS AB MONO 1W 8VSSOP | IC AMP CLASS AB MONO 700MW 8MSOP |
| Package | Cut Tape (CT) | -Reel® |
| Series | Boomer® | - |
| Type | Class AB | Class AB |
| Features | Depop, Mute, Shutdown, Thermal Protection, Volume Control | Differential Inputs, Short-Circuit and Thermal Protection, Shutdown |
| Voltage - Supply | 2.7V ~ 5.5V | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) Exposed Pad |
| Supplier Device Package | 8-VSSOP | 8-HVSSOP |
| Output Type | 1-Channel (Mono) with Mono Headphones | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 1W x 1 @ 8Ohm; 110mW x 1 @ 32Ohm | 700mW x 1 @ 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. 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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3. 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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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.
