ST launched the world's first audio processor that integrates innovative high dynamic range (HDR, High Dynamic Range) audio signal acquisition technology (signal acquisiTIon). This highly integrated solution integrates all the most cutting-edge audio processing technologies, has powerful performance, and is flexible to set up and easy to use.
The audio processor is an important component of home audio and video systems such as active speakers (acTIve speakers), audio and video bases (docking staTIons) and digital media players. The STA311B processor with high integration as the highlight is the high and low-end home audio and video system Ideal choice.
Andrea OnetTI, General Manager of Analog Products and Audio Systems Products Division of STMicroelectronics, said: "Since the advent of electronic audio products, STMicroelectronics has been a leader in the audio semiconductor market since our parent company SGS Microelettronica [1] invented it in 1958 Since the world ’s first monolithic audio power amplifier, we are refreshing the market standard every year. STA311B combines performance and flexibility, and once again set a milestone in audio chip integration, which can help customers reduce product costs and increase consumers Hearing experience. "
High dynamic range signal acquisition technology allows the processor to generate digital audio signals with a dynamic range exceeding 130dB without the need for expensive high-performance analog-to-digital converters (ADC). STMicroelectronics has filed a patent protection application for this technology. The STA311B integrated with this technology can handle bass like whispers and treble like aircraft engine sounds, and maintain the same clarity, so that the sound quality has reached an unprecedented level.
STA311B adopts 8.0x8.0x0.9mm VFQFPN compact package, monolithically integrates 8 audio processing channels (each channel built up to 10 user-selectable independent second-order filters), input and output mixing function, multi-frequency dynamic range compression , Advanced pop-free operation, automatic detection of input sampling frequency (pre-processing and post-processing), root mean square (RMS) measurement, and ST's unique FFXTM pulse width modulation technology (Pulse Width Modulation) ) And high dynamic range acquisition technology input. Such a high degree of integration allows audio equipment and audio subsystem manufacturers to reduce costs and develop multiple products on the same design platform to meet different performance and price requirements.
The input and output RMS measurement function of STA311B can improve the safety of the final product without any additional hardware cost. The previous audio processor required excessive peak power of the connected speakers, resulting in high cost of speakers in the audio system, and STA311B can help the system to suppress useless energy surges and prevent the speakers from being burned. The STA311B's crack-free sound circuit can also achieve seamless startup, eliminating the annoying noise generated by the bridge charging process in single-ended (Single-End) and bridge-tied (Bridge-Tied) load configurations.
As the latest member of the Sound Terminal® series of products that have been renowned for many years in the industry, STA311B is fully supported by ST's APWorkbench software () development tool. Developers configure ST's audio products on an intuitive and easy-to-use graphical interface. APWorkbench exclusive e2e community forum URL: https://my.st.com/public/STe2ecommunities/analog/Lists/APWorkbench/AllItems.aspx. Users can exchange ideas, ask questions, and share more ideas here.
STA311B has been mass-produced.
[1] STMicroelectronics was established after the merger of French semiconductor company Thomson Semiconducteurs and Italian semiconductor company SGS Microelettronica in 1987. SGS launched TAA 611 transistor radio audio power amplifier and TAA 621 TV audio power amplifier in 1958. These two products have been produced for 25 years.
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