Silicon Valley, California – 1/28/2015 – The new leader in global consumer and computer applications semiconductors, Nuvoton Technology, today introduced the NAU8214, a new Class D audio amplifier designed for portable consumer devices. Nuvoton's new NAU8214 features an analog input, a high-performance mono 2.9 WD-class power amplifier with built-in speaker protection, and an industrial rugged handheld computer and consumer mobile electronics for built-in wireless walkie-talkies. Examples include smartphones, tablets, docking stations, portable audio and video players, GPS navigation devices, LCD and LED TVs, and toys.
Farid Noory, senior product manager at Xintang, said: "In the fast-growing, highly competitive consumer and portable device market, it is extremely important to have both low power consumption and low noise. Therefore, Xintang engineers are striving to develop a new generation of Class D amplifiers - The NAU8214 is designed to reduce power consumption and switching noise in response to market demands, and is equipped with features to enrich the consumer experience."
Unlike other Class D power limiting devices that rely on supply voltage (the power limit increases with supply voltage), the NAU8214 mono Class D audio amplifier sets a new standard for audio amplifiers, providing unique power independence. Power limit function.
The NAU8214 solves customer problems on the chip, especially for customers who have been returned due to horn damage. In addition, customers need to handle different tolerances due to the use of multiple branded speakers, or need to optimize the maximum audio output volume but also have to be durable, or use 4 Ohm and 8 Ohm with power limits of 1, 2, 3 W Speakers, NAU8214 can meet their needs and can be set in single-ended or differential input mode.
Maximize power limit
The unique feature of the NAU8214 is its ability to limit the maximum output power delivered to the load. This maximum power limit is set using an external resistor connected to the dedicated pin PLMT. Once the threshold is set, the NAU8214 limits the voltage output that exceeds the setpoint regardless of the voltage change of the input supply. The NAU8214 with this output voltage control enables its power limiting function for any given load.
Excellent EMI performance and filterless design
The NAU8214 amplifier reduces electromagnetic interference (EMI) through spread-spectrum oscillator technology and slew rate control, eliminating the need for an external output filter. In addition, the NAU8214 also has better anti-interference and power supply rejection ratio (PSRR), higher than 90dB at 217Hz, is an ideal Class D audio amplifier with wireless and AM bands.
Breakthrough high performance and low power consumption
Class D topologies have a significant leap in power efficiency and noise minimization of audio equipment. The Class D amplifier can generate a square wave, making the waveform binary, which can be amplified by the switching function of the power device, and its power efficiency is higher than that of the Class AB amplifier by 66.6%.
The NAU8214 can output up to 2.9 W with a 4 Ω load and is equipped with an enable pin for very low standby current and 4ms fast start.
Listing situation and pricing
The NAU8214 is available now in SOP8 and QFN20 packages and is priced at $0.60.
About Xintang Technology
The purpose of Xintang Technology is to bring innovative solutions to the semiconductor industry. Founded in 2008, the company was formerly known as Winbond Electronic Logic IC, and was officially listed on the Taiwan Stock Exchange in 2010. Nuvoton Technology specializes in the development of analog/mixed-signal, microcontroller and computer cloud-related application IC products, with leading products in the industrial electronics, consumer electronics and computer markets. In addition, Nuvoton has a customizable system. Fabs for analog, power management, and microcontroller product manufacturing processes, in addition to producing their own IC products, provide some of the capacity as a foundry service. Nuvoton Technology provides customers with cost-effective products with flexible technology, advanced design capabilities and digital analog integration technology capabilities, and implements the corporate vision of “innovation†with excellent customer service. Xintang Technology attaches great importance to long-term relationships with customers and partners, and is committed to continuous innovation in products, processes and services. Xintang Technology has established offices in the United States, China, and Israel to strengthen regional customer support services and global operations management.
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