MAX9724AEUD+ vs MAX9722AETE+C2N
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Maxim Integrated | Maxim Integrated |
| Description | IC AMP CLSS AB STER 45MW 14TSSOP | IC AMP AUDIO .13W STER AB 16TQFN |
| Package | Tube | 16-WFQFN Exposed Pad |
| Series | DirectDrive® | DirectDrive? |
| Type | Class AB | Class AB |
| Features | Depop, Short-Circuit and Thermal Protection, Shutdown | Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown |
| Voltage - Supply | 2.7V ~ 5.5V | 2.4 V ~ 5.5 V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 14-TSSOP (0.173\", 4.40mm Width) | 16-WFQFN Exposed Pad |
| Supplier Device Package | 14-TSSOP | 16-TQFN (3x3) |
| Output Type | Headphones, 2-Channel (Stereo) | Headphones, 2-Channel (Stereo) |
| Max Output Power x Channels @ Load | 45mW x 2 @ 32Ohm | 130mW x 2 @ 32 Ohm |
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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. 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 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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4. 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.
