SA58631TK,115 vs MAX98307ETE+T
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | NXP USA Inc. | Maxim Integrated |
| Description | IC AMP CLASS AB MONO 3W 8HVSON | IC AMP CLASS DG MONO 3.3W 16TQFN |
| Package | Tube | Cut Tape (CT) |
| Series | - | - |
| Type | Class AB | Class DG |
| Features | Depop, Mute, Short-Circuit and Thermal Protection, Standby | Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown |
| Voltage - Supply | 2.2V ~ 18V | 2.6V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-VDFN Exposed Pad | 16-WFQFN Exposed Pad |
| Supplier Device Package | 8-HVSON (4x4) | 16-TQFN (3x3) |
| Output Type | 1-Channel (Mono) | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 3W x 1 @ 8Ohm | 3.3W x 1 @ 8Ohm |
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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 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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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.
