TPA2012D2RTJR vs SA58631TK,118
| Part Number |
|
|
| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | NXP USA Inc. |
| Description | IC AMP CLASS D STEREO 2.1W 20QFN | IC AMP CLASS AB MONO 3W 8HVSON |
| Package | Tape & Reel (TR) | Tape & Reel (TR) |
| Series | - | - |
| Type | Class D | Class AB |
| Features | Differential Inputs, Short-Circuit and Thermal Protection, Shutdown | Depop, Mute, Short-Circuit and Thermal Protection, Standby |
| Voltage - Supply | 2.5V ~ 5.5V | 2.2V ~ 18V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 20-WFQFN Exposed Pad | 8-VDFN Exposed Pad |
| Supplier Device Package | 20-QFN (4x4) | 8-HVSON (4x4) |
| Output Type | 2-Channel (Stereo) | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 2.1W x 2 @ 4Ohm | 3W x 1 @ 8Ohm |
-
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.
-
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. 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.
-
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.
