LM48555TL/NOPB vs SSM2305CPZ-REEL
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | Analog Devices Inc. |
| Description | IC AMP CLASS AB MONO 12USMD | IC AMP CLASS D MONO 2.8W 8LFCSP |
| Package | Tape & Reel (TR) | Tape & Reel (TR) |
| Series | Boomer® | - |
| Type | Class AB | Class D |
| Features | Depop, Differential Inputs, Shutdown | Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown |
| Voltage - Supply | 2.7V ~ 9V | 2.2V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 12-WFBGA | 8-WFDFN Exposed Pad, CSP |
| Supplier Device Package | 12-uSMD (1.46x1.97) | 8-LFCSP (3x3) |
| Output Type | 1-Channel (Mono) | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | - | 2.8W x 1 @ 4Ohm |
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1. 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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2. 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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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. 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.
