PAM8009DHR vs IS31AP4088A-QFLS2-TR
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Diodes Incorporated | Lumissil Microsystems |
| Description | IC AMP D/AB STEREO 3W 24SOP | IC AMP CLASS AB STER 2.84W 16QFN |
| Package | Tape & Reel (TR) | Cut Tape (CT) |
| Series | - | - |
| Type | Class D, Class AB | Class AB |
| Features | Depop, Mute, Thermal Protection | Depop, Shutdown, Thermal Protection |
| Voltage - Supply | 2.8V ~ 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 | 24-SOIC (0.295\", 7.50mm Width) | 16-WQFN Exposed Pad |
| Supplier Device Package | 24-SOIC | 16-QFN (4x4) |
| Output Type | 2-Channel (Stereo) with Stereo Headphones | 2-Channel (Stereo) |
| Max Output Power x Channels @ Load | 3W x 2 @ 4Ohm | 2.84W x 1 @ 4Ohm: 98.5mW 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. 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.
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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.
