STA321

Packaging:	Tray
Part Status:	Active
Function:	Fully Integrated Processor
Applications:	Pre-Amplifier
Number of Channels:	8
Interface:	I²C, I²S
Voltage - Supply:	3 V ~ 3.6 V
Operating Temperature:	-40°C ~ 125°C (TJ)
Specifications:	Full Flexible Amplification
Package / Case:	64-LQFP Exposed Pad
Supplier Device Package:	64-LQFP-EP (10x10)
Base Part Number:	STA321
Series:	Sound Terminal™

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Audio Special Purpose

STA321 Application Field and Working Principle

The STA321 is an integrated audio digital signal processor that makes use of a highly efficient, low-noise, low-distortion 8-/10-bit audio converter. It is designed for use in a wide range of commercial and consumer home audio amplifier systems, including amplifiers and receivers. The processor is designed to deliver clear and natural sound, optimal speaker performance, and higher efficiency. This article will discuss the application field and working principle of the STA321.

Application Field

The STA321 can be used for a variety of commercial and consumer audio applications, such as car, home, and professional sound systems. In addition, it can be used to increase the power efficiency of stereo systems, and to reduce system distortion. By taking advantage of the STA321’s fully digital signal processing, various sound effects such as 3-D sound can be created. The processor is also capable of automatically detecting and adapting to the tone and intensity of the music, and can be used to customize the listening experience. The STA321 is equipped with 4 channels, providing a total output of up to 4W per channel. It can be used to drive 4 ohm to thirty-five watts loudspeakers, or 8 ohm to seventy-five watts loudspeakers. Furthermore, the processor can be used with a variety of audio field devices, such as CD players, mp3 players, DAB receivers, and Bluetooth streaming devices.

Working Principle

The STA321 functions as an amplifier and digital signal processor (DSP). It first receives an analog signal from a source device and passes it through an 8-/10-bit audio converter. This conversion enables it to isolate and identify the portions of the sound that can be improved. The processor then performs signal manipulation, such as equalizer equalization and volume adjustment. The signal is then sent through the DSP in an internal loop, for further signal processing until the desired sound is achieved.The processor also contains a built-in switching power supply that ensures the optimal power conversion and audio quality. The amplifier power circuitry is designed to filter out any excess released magnetic energy and static noises, while still maintaining a high level of efficiency and power output. Additionally, the processor also includes digital signal delay compensation, which allows for a more natural sound balance both indoors and in car systems.

Conclusion

The STA321 is designed for commercial and consumer audio applications, and is capable of delivering clear and natural sound. It is equipped with an 8-/10-bit audio converter, 4 channels with up to 4W output per channel, and a built-in switching power supply. The processor also contains a variety of signal manipulation features, such as volume adjustment and equalizer equalization, and provides digital signal delay compensation.

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