At present, there are mainly the following kinds of power amplifier chips with good sound quality : onsemi's SAA755< /strong> ta8225 power amplifier chip sound quality : This chip is a very goodShow audio power amplifier ta8225 power amplifier chip sound quality , with excellent sound quality and efficient performance. It is widely used in a variety of audio equipment, including home theater and Bluetooth speakers. The SAA755 features low distortion and wide band to provide clear, full sound quality.
The low power amplifier chip with the best sound quality is TPA3116D2. TPA3116D2 is an efficient, high-fidelity, low-power amplifier chip suitable for a variety of audio systems. It has excellent sound quality performance, low distortion degree and high signal-to-noise ratioProvides a clear, detailed audio experience.
Recommended ta8225 power amplifier chip sound quality You use LM4562, its operating voltage range is wide, high precision, sound quality is very good. The LM4562 is a high-fidelity dual operational amplifier launched by National Semiconductor in recent years, with ultra-small distortion, only 0.00003% of the total harmonic distortion and noise (THD N), in other words, the distortion of this operational amplifier is almost negligible.
LM3886 mono 80W I'm using this Whyway S5N for nowThe horn is fine. Dual 26-28V LM4766 dual channel 8 Ohm load 40W without distortion. Used 7293 feel it is too delicate ta8225 power amplifier chip sound quality . LM3886 Good, online finished board 118 yuan, power and sound quality can not be said. How to improve the sound quality of power amplifier: All coupling capacitors use high-quality tantalum capacitors. All resistors use metal film and have good thermal stability.
LM1875 LM1875 is one of the most commonly used power amplifier chips, designed for mono, not only with sound quality mellow powerLarge advantages, but also has a complete protection circuit, in the same type of chip belongs to the high-grade model.
1, the maximum input voltage VCCmax=11V; The voltage in the figure VCC typ=9v; Voltage range VCC RNG=3V--10V; Pin 7 is the positive electrode, and FIN is the large pin located on both sides of the IC, connected to the negative electrode (single power supply). Please refer to this diagram for the list of components, which are marked on the diagram. The unit of resistance is OhMs.The unit of capacitance is UF. The audio access in the figure above is pin 5 and pin 8, and the ground wire is connected to the ground itself.
2, TDA2822 is a low-power integrated power amplifier, which is characterized by: low operating voltage, can still work normally when it is less than 8V, high integration, fewer peripheral components, and good sound quality. TDA2822 is widely used in radio, walkman, headphone amplifier and other small power amplifier circuit. The typical application circuit of TDA2822 for stereo amplifiers is shown in the figure.
3, it is assembled with TDA2030 integration block, which is a very good power amplifier fast, as long as you followThe circuit diagram requires welding to be absolutely successful, the power is not small, the sound quality is really good, and the sound of the 6-inch subwoofer is very shocking, especially as a computer desktop audio is ideal. Secondly, you can also use MP mobile phone audio output as a sound source. In addition, you can exercise yourself and improve your hobbies and interests.
4, the input audio analog signal is modulated by PWM circuit, forming a pulse chain with a certain proportion of the duty ratio of the input signal, amplified by the switching circuit, by the low-pass filter to filter out the high-frequency components, restore the amplified input signal waveform, by the speaker playback. The following is a typical Class D amplifierstrong>ta8225 power amplifier chip sound quality , 6ta8225 power amplifier chip sound quality , 8,16 ohm speaker. The power amplifier has a rated output power, but the rated power in different ta8225 power amplifier chip sound quality speaker impedance, there are different sizes of output power, speaker impedance is large, power amplifier power is small; Loudspeaker impedance is small, power amplifier power is large.
2, two 4Ω speakers (a bass horn, a tweeter) can not be directly connected, soThe total impedance is 2 ohms, and after being connected to the amplifier, the amplifier may be damaged due to overload. The two speakers should be connected through a frequency divider, which is responsible for separating the audio current of different frequency bands and feeding it to different speakers, so that the overall impedance is still 4Ω, and the sound quality will be better.
3, w horn, 4 ohms, with how much power amplifier suitable: with 60w to 600w output with 4 ohms terminal power amplifier suitable. If you want to get high fidelity, it is best to choose 10 times the power storage of the audio machine ~60w speaker choose 600w power amplifier. Note: The speaker and sound connection are impedance matching.
4, 4 and 8 euro speakers in the speaker can not be used together. When used together, the power distribution is unbalanced and the resistance value is small. According to Ohm's law: I = V/R, when connected together, the voltage applied is the same. So, assuming the voltages are 1,4 and 8 ohms, that is, 1/4 = 0.25A current and 1/8 = 0.125A. Obviously, the current on a 4-ohm speaker is twice that of an 8-ohm speaker.
5, Yes, and definitely. Because a doubling of the impedance is going to double the current of the amplifier at the same output voltage. The power tube may overheatAnd damage (reactive tube overcurrent protection). Obviously, this is not the normal way to play audio. Impedance matching is the basic principle of playing audio.