Extended to extend the use of lithium batteries

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - អ្នកផ្គត់ផ្គង់ស្ថានីយ៍ថាមពលចល័ត

Manufacturers of portable consumer electronic devices face many challenges. They must develop cost-effective and multi-function sound solutions, while extending battery usage time. On the other hand, the manufacturer has to shorten the development time in order to first launch new products in the market.

With the development of ultra-low power consumption codecs, the development of embedded mini DSP and strong map form programming tools, manufacturers are now able to respond to these complex needs. For systems to be independently compiled, and integrate embedded analog I / O systems, the ultra-low power and processing efficacy of these devices can supply low power audio solutions for them. Graphics programming environment and rich software link libraries can shorten the development completion time of the application, so that it is far less than the development of development in general program design environments.

For low power operation, many new generation low-power codec can operate simulation and digital core in a single 1.5V to 1.8V voltage.

If the digital core is operated at a voltage of 1.26V, it is also possible to further Reduce power consumption. Many devices have low power mode, however, additional power adjustment selection can adjust the power based on individual configuration and processing options used in recording and playback, which helps designers minimize power consumption, and then Optimization is optimized according to the number of channels, output driving requirements, sampling ratio, input and output required by the input and output of the signal, and different conditions such as the signal noise ratio (SNR) to the output.

As shown in Figure 1, the power consumption of the compiler can be adjusted through this function, regarding different audio reproduction modes (call, newsletter ringtone, voice communication and music play), different I / O configuration (mobile phone Mobile phone operations) and different signal processing requirements (low noise and high noise communication environments) can achieve optimal performance. For analog bypass mode of operation without converting, the PLL does not have the need for PLL, or the D class is driven by the AB type headphone drive configuration, and power adjustment control can supply additional configuration options, and these configuration controls are through I2C or SPI bus. Manage.

Figure 1. SnR and voltage improvement will increase power consumption. Users can adjust power power adjustment to battery usage time that can greatly extend portable audio devices according to their own application and system requirements.

The low-power operation mode can make the ultra-low power consumption codewater with signal processing function reduce the power of the electric / newsletter to 5MW, and make the power consumption of 8kHz or 16kHz voice communication below 7MW, while maximum Sound quality 44.1KHz stereo headset music playback power reduction below 10MW. Combined with ultra-low power data conversion and low power consumption signal processing, the general system architecture of the inheid-containing application processor and compile mapping can exert significant energy-saving utility on the same chip.

In these architectures, ultra-low power consumption codecs can perform some or all of the audio processing functions of the application processor. Systems with fundamental frequency chips or application processor chips have analog input and / or output functions. Compiling the encoder with the signal processing function supplies a low cost and short development process, which can integrate other function or functions, do not re-program the program design or replace the existing fundamental or application processor, another Extending battery usage time is a new ultra-low power consumption coder with embedded mini DSP.

These devices and their powerful graphical programming tools can supply low-power audio solutions for many portable audio processing and communication system architecture. Among them, the power consumption of stereo play can be as low as 2.4MW, which is achieved by using the graphics software environment, and simplifies the manufacturer's programming.

The competition in the portable consumer electronics market is very fierce, and the changes in the change are quite fast. Fast listing time and ultra-low power consumption shorten the manufacturer's design process and help them develop unique products. The ultra-low power audio converter with integrated DSP and a graphical software development environment that helps accelerate programming is the competitive advantage.