Silicon Valley, California – 1/28/2015 – Nuvoton Technology, a leading global supplier of consumer and computer application semiconductors, today introduced a new Class D audio amplifier specifically designed for portable consumer devices-NAU8214. The new NAU8214 launched by Nuvoton Technology has an analog input, a high-performance mono 2.9 WD class power amplifier with built-in speaker protection device, suitable for industrial rugged handheld computers and consumer mobile electronic products with built-in wireless intercom, Examples include smartphones, tablets, docking stations, portable audio and video players, GPS navigation devices, LCD and LED TVs, and toys.
Nuvod senior product manager Farid Noory said: "In the rapidly developing, highly competitive consumer and portable device markets, it is extremely important to have both low power consumption and low noise. Therefore, Nuvoton engineers strive to develop a new generation of Class D amplifiers- NAU8214. In addition to reducing power consumption and switching noise in response to market demand, it is also equipped with many functions to enrich the consumer experience. "
Unlike other Class D power limiting devices that rely on supply voltage (the power limit of which will increase as the supply voltage rises), the NAU8214 mono Class D audio amplifier establishes a new standard for audio amplifiers and provides unique power independence Power limit function.
NAU8214 solves the customer's problem on the chip, especially customers who have been returned due to damaged speakers. In addition, whether customers need to deal with different tolerances due to the use of multiple brand speakers, or need to optimize the maximum audio output volume but also have to take into account durability, 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.
Maximum power limit function
The unique feature of NAU8214 is that it can limit the maximum output power transmitted to the load. This maximum power limit is set using an external resistor connected to the dedicated pin PLMT. Once the threshold is set, regardless of the voltage change of the input power supply, the NAU8214 will limit the voltage output that exceeds the set value. The NAU8214 equipped with this output voltage control can realize its power limiting function for any given load.
Excellent EMI performance and filter-free design
The NAU8214 amplifier reduces electromagnetic interference (EMI) through spread-spectrum oscillator technology and slew rate control, so there is no need to use an external output filter. In addition, NAU8214 also has better anti-interference and power supply rejection ratio (PSRR), which is higher than 90dB at 217Hz, making it an ideal Class D audio amplifier for products such as wireless and AM bands.
Breakthrough high performance and low power consumption
Class D topology has a significant leap in power efficiency and noise minimization of audio equipment. Class D amplifiers can generate square waves, making the wave form binary, which can be amplified by the switching function of the power device, and its power efficiency is higher than that of class AB amplifiers by 66.6%.
The NAU8214 can output a maximum power of 2.9 W under a 4? Load, and is equipped with an extremely low standby current and a 4ms fast start chip enable pin.
Listing and pricing
SOP8 and QFN20 packages NAU8214 are already available, priced at $ 0.60.
About Nuvoton Technology
The purpose of Nuvoton Technology is to bring innovative solutions to the semiconductor industry. The company was established in 2008, formerly known as Winbond's logic IC business unit, and officially listed on the Taiwan Stock Exchange in 2010. Nuvoton Technology focuses on the development of analog / hybrid signals, microcontrollers and computer cloud related application IC products. Related products have a leading position in the industrial electronics, consumer electronics and computer markets; in addition, Nuvoton Technology has a company that can provide customization The fabs for simulation, power management and microcontroller product manufacturing process, in addition to producing their own IC products, also provide part of the production capacity as wafer foundry services. Nuvoton Technology provides customers with cost-effective products with flexible technology, advanced design capabilities, and digital and analog integration technology capabilities, and implements the corporate vision of "Happy Innovation" with excellent customer service. Nuvoton Technology attaches great importance to long-term relationships with customers and partners, and is committed to continuous innovation in products, processes and services. Nuvoton Technology has offices in the United States, China, Israel and other places to strengthen regional customer support services and global operations management.
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