MAX9814ETD+T vs MAX9755ETI+
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Maxim Integrated | Maxim Integrated |
| Description | IC AMP CLASS AB MONO 14TDFN | IC AMP CLASS AB STER 2.6W 28TQFN |
| Package | -Reel® | Tube |
| Series | - | DirectDrive® |
| Type | Class AB | Class AB |
| Features | AGC, Microphone, Shutdown | Depop, Short-Circuit and Thermal Protection, Shutdown |
| Voltage - Supply | 2.7V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 14-WFDFN Exposed Pad | 28-WFQFN Exposed Pad |
| Supplier Device Package | 14-TDFN (3x3) | 28-TQFN (5x5) |
| Output Type | 1-Channel (Mono) | 2-Channel (Stereo) with Stereo Headphones |
| Max Output Power x Channels @ Load | - | 2.6W x 2 @ 3Ohm; 110mW x 2 @ 16Ohm |
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1. What is an audio amplifier and what does it do?
An audio amplifier is a device that amplifies an audio signal, such as music or speech, to a higher voltage or current level to drive speakers or headphones, ensuring that the sound remains clear and accurate when played at higher volumes.
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2. 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. -
3. 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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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.
