PAM8124RHR vs MAX98355BEWL+T
| Part Number |
|
|
| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Diodes Incorporated | Maxim Integrated |
| Description | IC AMP CLASS D STER 18W 24TSSOP | IC AMP CLASS D MONO 3.2W 9WLP |
| Package | Tape & Reel (TR) | Cut Tape (CT) |
| Series | - | - |
| Type | Class D | Class D |
| Features | Depop, Short-Circuit and Thermal Protection | Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown |
| Voltage - Supply | 10V ~ 26V | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 24-TSSOP (0.173\", 4.40mm Width) Exposed Pad | 9-UFBGA |
| Supplier Device Package | 24-TSSOP-EP | 9-WLP |
| Output Type | 2-Channel (Stereo) | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 18W x 2 @ 4Ohm | 3.2W x 1 @ 4Ohm |
-
1. What types of audio amplifiers are available?
Common types of audio amplifiers include:
Class A amplifiers: have the highest sound quality, but are less efficient.
Class B amplifiers: More efficient, but may produce crossover distortion.
Class AB amplifiers: between Class A and Class B with good balance.
Class D amplifier: highest efficiency, suitable for portable devices, but slightly lower sound quality. -
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%.
-
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.
-
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.
