LM4844TL/NOPB vs SSM2301RMZ-R2
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | Analog Devices Inc. |
| Description | IC AMP CLSS AB STER 1.2W 30DSBGA | IC AMP CLASS D MONO 1.52W 8MSOP |
| Package | Bulk | Bulk |
| Series | Boomer® | - |
| Type | Class AB | Class D |
| Features | 3D, Depop, I²C, Mute, Shutdown, Volume Control | Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown |
| Voltage - Supply | 2.7V ~ 5.5V | 2.5V ~ 5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 30-WFBGA, DSBGA | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) |
| Supplier Device Package | 30-DSBGA | 8-MSOP |
| Output Type | 2-Channel (Stereo) with Stereo Headphones | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 1.2W x 2 @ 8Ohm; 80mW x 2 @ 32Ohm | 1.52W x 1 @ 8Ohm |
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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 a Class D audio amplifier and what are its advantages?
Class D audio amplifiers work through Pulse Width Modulation (PWM) technology and have extremely high efficiency (typically up to 90% or higher), making them suitable for use in portable audio equipment or high-efficiency sound systems. It generates less heat because it reduces energy consumption.
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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.
