Audio power amplifier chip , also known as audio power amplifier chip, refers to an integrated circuit chip that converts audio signals into linear output power. In the field of audio power amplifiers, one type is an analog power amplifier in the traditional sense; the other is a digital Power amplifiers, they can all convert analog signals to digital signals.
With the popularity of smart phones, car audio, AI smart speakers, smart homes, home theaters, tablets, laptops and other smart devices, the application of digital audio power amplifier chips is becoming more and more widespread; at the same time, the performance requirements for audio power amplifier chips are getting higher and higher. Coming higher and higher; South Korea's NF (Naif) NTP series audio power amplifier chips, represented by Gongcai.com, are closer to the domestic market and meet demand.
In recent years, in the domestic market, South Korea's NF audio power amplifier series can not only provide separate headphones, speaker power amplifiers, and CODECs, but also create product lines that integrate the above functional combinations.
At present, on mobile phone terminals, music mobile phones generally use CODEC + PA. CODEC requires extremely high signal-to-noise ratio, rich coding and decoding functions and interfaces. In addition, in order to support 16Ω headphones, a better quality headphone power amplifier is also required. . For portable DVD and notebook systems, audio ICs with integrated volume adjustment functions are required.
The following is an introduction to the product functions of several Korean NF audio power amplifier chip series commonly used in AI smart speakers, home theaters and TVs:
1. NTP8835; working power supply voltage range: 7V ~ 28V; supports 2-channel stereo (30W x 2 BTL @24V, 6Ω) and 2.1CH (10W x 2 + 30W @24V, 6Ω). It not only has the advantages of mellow sound quality and high power, It also has a complete protection circuit, which is a high-end model among similar chips. It has a mixer and dual quad filters, which can be used to implement basic audio signal processing functions. Supports 4 ohm speakers, the output efficiency is as high as over 85%, the distortion is less than 1%, the signal-to-noise ratio is higher than 95db, and no extra noise is generated, making it a must-have for home theaters.
2. NTP8918; working power supply voltage range: 5V ~ 28V; supports 2 CH Stereo (15W x 2 BTL). This chip has RS DRC dynamic power control, which effectively prevents sound breakage. Its internal design has a very complete over-consumption protection circuit, and its The tone is very sweet, the sound quality is mellow, and it has the charm of a tube. It is suitable for playing softer music. It has 2*16-segment adjustable PEQ and the APEQ function is added to really improve the sound quality. It is often used in AI smart speakers.
3. NTP8928; working power supply voltage range: 5V ~ 28V; supports 2 CH Stereo (20W x 2 BTL) and is widely used in HI-FI fields: such as TVs, active speakers, etc. The design of this chip focuses on timbre and combines the advantages of bipolar signal processing circuits and power MOS. The output efficiency of the 8Ω speaker is as high as over 90%, and it has the characteristics of high voltage resistance, low noise, low distortion, and extremely friendly playback tone. The short-circuit current and overheating protection functions make its performance more complete.