LMV1088RLX/NOPB vs LM4844TL/NOPB
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | Texas Instruments |
| Description | IC AMP CLASS AB MONO 36DSBGA | IC AMP CLSS AB STER 1.2W 30DSBGA |
| Package | -Reel® | Bulk |
| Series | - | Boomer® |
| Type | Class AB | Class AB |
| Features | Differential Inputs, I²C, Microphone, Mute | 3D, Depop, I²C, Mute, Shutdown, Volume Control |
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 36-WFBGA, DSBGA | 30-WFBGA, DSBGA |
| Supplier Device Package | 36-DSBGA (3.5x3.24) | 30-DSBGA |
| Output Type | 1-Channel (Mono) | 2-Channel (Stereo) with Stereo Headphones |
| Max Output Power x Channels @ Load | - | 1.2W x 2 @ 8Ohm; 80mW x 2 @ 32Ohm |
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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. 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. 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.
