Apexone Microelectronics is an innovative fabless semiconductor company that designs high-performance interactive multimedia communication mixed-signal integrated circuits. Since its inception in 2002, the company has introduced more than a dozen state-of-the-art IC products into the market, generating explosive revenue growth, and on the trajectory for significant future growth. The products are widely used by leading OEMs globally in the emerging interactive multimedia communication market. The company has assembled a diverse team of recognized leaders who are focused on providing the best products with the highest quality and support to a worldwide customer base.
Quality in Design:
We have designed and implemented a quality management system that provides the framework for continual improvement of products, processes and customer service. We apply well-established design rules and practices and focus on product reliability from the initial stage of the design cycle through each specific design process. In addition, we rely on in-depth simulation studies, testing and practical application testing to validate and verify our products. We have established our design flow in accordance with the requirements of ISO9001-2008 quality control standards and are carefully following such flow, which covers from product feasibility study phase, the design phase, the engineering production phase, the samplings phase, to the OEM trail phase.
Quality in Manufacturing:
We emphasize a strong supplier quality management practice in which our manufacturing suppliers are pre-qualified by our operations and quality teams. Suppliers are required to have a quality management system, certified to ISO9001 standard. To ensure consistent product quality, reliability and yield, we closely monitor each stage of the production cycle by reviewing electrical, parametric and manufacturing process data from each wafer foundry and assembly subcontractor. We are confident that continuous improvement of suppliers’ performance are essential to ensure our continuous improvement and consequently to meet our commitments to customers.
Quality Management System:
Apexone achieved the ISO 9001:2008 in Oct.2010 and has maintained compliance to the ISO requirements since that time. The certification is as below.
To meet the ambitious quality goals, a company quality policy has been implemented by top management with the purpose of defining the course of actions. We focus on Customer Satisfaction first because we know our success depends on our ability to satisfy our customers.
Interactive Audio
功能特点
The A7023 is a cost-effective 4W-per-channel stereo filter-free Class-D audio amplifier designed with Apexoneˉs patent pending technologies and architecture. The chip features very low 0.02%-THD+N, high 94dB-SNR, high 92%-efficiencies and good 73dB-PSRR at 217Hz. Large output power, high efficiencies, low THD+N, high SNR, good PSRR and differential architecture together provide the best immunity to noise for portable and semi-portable devices. Integrated internal mute control function can suppress click pop sound. Additionally, the A7023ˉs fast startup time, low shutdown current and small package size make the A7023 an ideal choice for both powered speakers and portable devices -- the A7023 can drive speakers as low as 4-Ohm or even lower.
参数指标
■ 2.5V to 6.5V single-supply operation
■ 28 steps digital volume control from pure mute to 24dB
■ selectable default starting gain of 6, 18 dB
■ Low to 0.02% THD+N
■ High efficiency : 87% at 2*1W at 8,5V
■ Thermal and short-circuit protection
■ LED drive integrated for status
■ Mute function
■ Pb-free SOP20 packages available
应用领域
■ Multimedia speakers,
■ Wireless handsets
■ Digital photo frames, MP3, PMPs, GPS,
■ Notebooks, MIDs, small-sized LCD monitors,
■ Digital Camera
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