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音頻 Codec 專注音頻編解碼與信號(hào)轉(zhuǎn)換，DSP 是通用數(shù)字信號(hào)處理平臺(tái)，可承載 Codec 等多種算法。 主要區(qū)別 核心功能：Codec 聚焦音頻壓縮 / 解壓縮（如 AAC、LDAC）和模擬 / 數(shù)字信號(hào)轉(zhuǎn)換（ADC/DAC）；DSP 處理各類數(shù)字信號(hào)，執(zhí)行濾波、降噪、音效調(diào)校等復(fù)雜運(yùn)算。 設(shè)計(jì)目標(biāo)：Codec 追求高壓縮效率、低功耗和低延遲，適配音頻存儲(chǔ) / 傳輸；DSP 強(qiáng)調(diào)算力和通用性，支持多類型信號(hào)處理任務(wù)。 靈活性：Codec 多為專用硬件或固定算法，修改成本高；DSP 可通過編程加載不同算法，適配場(chǎng)景更靈活。 應(yīng)用場(chǎng)景 音頻 Codec：智能手機(jī) / 耳機(jī)的音頻錄制 / 播放、藍(lán)牙音頻傳輸、流媒體平臺(tái)音頻編碼、錄音筆 / 麥克風(fēng)的信號(hào)轉(zhuǎn)換、音響設(shè)備的模擬信號(hào)輸出。 DSP：汽車音響的噪聲抑制與音效優(yōu)化、語(yǔ)音助手的語(yǔ)音識(shí)別預(yù)處理、專業(yè)音頻設(shè)備（混音臺(tái)）的信號(hào)處理、智能家居的音頻降噪、無人機(jī)的音頻信號(hào)處理。

最近，被稱為“史上最嚴(yán)”的充電寶新標(biāo)準(zhǔn)——《移動(dòng)電源安全技術(shù)規(guī)范》有了新進(jìn)展，工信部在最近一個(gè)月多次組織召開相關(guān)意見稿研討會(huì)。有參會(huì)人士表示：“這次制定的標(biāo)準(zhǔn)非常嚴(yán)格，許多工廠難以達(dá)到。工信部的態(tài)度很明確：達(dá)不到標(biāo)準(zhǔn)就不要繼續(xù)生產(chǎn)，因?yàn)榭傆幸恍┢髽I(yè)能夠達(dá)標(biāo)，這也將會(huì)成為自今年6月國(guó)內(nèi)大范圍充電寶召回事件后，行業(yè)迎來的第二次大洗牌。

近年來，音頻行業(yè)正經(jīng)歷顯著的技術(shù)迭代：越來越多音響廠家從傳統(tǒng)模擬輸入功放，轉(zhuǎn)向 I2S 數(shù)字功放芯片。這一趨勢(shì)在便攜式藍(lán)牙音箱、小型家庭影院、智能音箱、桌面音響等應(yīng)用場(chǎng)景中尤為明顯。 I2S 數(shù)字功放為何成為工程師首選？核心在于其在性能、開發(fā)效率和功能擴(kuò)展性上的多重優(yōu)勢(shì)： 抗干擾與音質(zhì)優(yōu)化：數(shù)字信號(hào)傳輸大幅降低電磁干擾（EMI），布板走線要求更簡(jiǎn)單，底噪表現(xiàn)遠(yuǎn)優(yōu)于模擬功放，避免信號(hào)失真； 開發(fā)周期與成本優(yōu)化：內(nèi)置 DSP 模塊支持軟件化調(diào)音，無需復(fù)雜外圍電路，大幅降低二次開發(fā)成本； 功能擴(kuò)展性強(qiáng)：支持 EQ 調(diào)節(jié)、動(dòng)態(tài)范圍控制、低音增強(qiáng)等多種實(shí)用算法，可靈活適配不同產(chǎn)品需求。 深圳市佰泰盛世科技有限公司深耕音頻領(lǐng)域，現(xiàn)大力推廣內(nèi)置 DSP 的 2×32W 立體聲 I2S 數(shù)字輸入 D 類功放芯片 AU6815P，助推便攜式音頻產(chǎn)品升級(jí)迭代。AU6815P 是一款數(shù)字輸入型、雙通道立體聲高效功放芯片，集成高精度 DSP 與多重保護(hù)機(jī)制，外圍僅需少量無源元件，為尺寸受限且追求高音質(zhì)的便攜音頻產(chǎn)品提供低成本、高性能解決方案。

NS6305 是支持高電壓輸入的同步降壓電源管理芯片，在寬輸入電壓范圍內(nèi)可實(shí)現(xiàn) 1.2A 的連續(xù)電流輸出。NS6305 具有優(yōu)秀的恒壓特性。NS6305 采用電流模式的環(huán)路控制原理，實(shí)現(xiàn)了快速的動(dòng)態(tài)響應(yīng)。NS6305 工作開關(guān)頻率為 220kHz，具有良好的EMI 特性。 NS6305 內(nèi)置有低導(dǎo)通電阻的上下功率管導(dǎo)通，能夠最大程度提高效率。支持在輕重負(fù)載情況下自動(dòng)負(fù)載切換調(diào)制方式，在輕載時(shí)采用效率更高的PSM（Pulse skip mode）方式，重載時(shí)采用 220KHZ固定頻率的 PWM（Pulse width mode）方式。同時(shí)芯片還包含多重保護(hù)功能：過溫保護(hù)，輸出短路保護(hù)和輸入欠壓/過壓保護(hù)等。 NS6305 采用 SOP-8 的標(biāo)準(zhǔn)封裝。

PL59011是一款適用于輸入電壓高達(dá)100V的超寬輸入范圍、高性能同步降壓DC-DC的PWM控制器。PL59011通過驅(qū)動(dòng)一對(duì)外部整流和續(xù)流MOS-FET實(shí)現(xiàn)大輸出電流(可達(dá)20A)、超寬出入范圍(12-100V)的降壓DC-DC應(yīng)用?？赏獠烤幊? 調(diào)整開關(guān)頻率，可調(diào)范圍為50 kHz-500kHz,實(shí)現(xiàn)在不同應(yīng)用下對(duì)轉(zhuǎn)換效率、體積、功率大小的靈活設(shè)計(jì)。 PL59011保護(hù)功能齊全,具有可編程設(shè)置的輸入欠壓鎖定、輸入過壓鎖定、和輸出過流保護(hù)以及電源電流低于10μA時(shí) 的自動(dòng)關(guān)閉模式。在家庭儲(chǔ)能電源、電信總線網(wǎng)絡(luò)轉(zhuǎn)換器、工業(yè)電機(jī)驅(qū)動(dòng)等高壓、大電流應(yīng)用的理想選擇。

PL56002 is a PWM controller, designed for high performance synchronous Buck DC/DC applications with input voltages 4.2 V to 32 V PL56002 employs Constant ON time control. The switching frequency could be set to 150kHz,300kHz based on different resistor value between FREQ pinand GND pin. The device also features a programmable soft-start function and offers all kinds of protection features including cycle-by-cycle current limiting, input under voltage lockout (UvLO), output over voltage protection (OvP), thermal shutdown and output short prote ction etc.

PL84052 is a PWM controller, designed for highperformance synchronous Buck DC/DC applications with input voltages 3.0 V to 32 V(36 V maximum).PL84052 employs Constant ON time control. The switching frequency could be set to 150kHz,300kHz600kHz or 1200kHz based on different resistor value between FREQ pin and GND pin. The device also features a programmable soft-start function and offers all kinds of protection features including cycle-by-cycle current limiting, input under voltage lockout (UVLO),output over voltage protection (OVP), thermal shutdow and output short protection etc.

The RY9121 is a high frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to provide a 2A continuous output current over a wide input supply range, with excellent load and line regulation. ECOT control operation provides very fast transient response and easy loop design as well as very tight output regulation. The RY9121 requires a minimal number of readily available, external components and is available in a space saving SOT23-6 package.

The RY9121E is a high frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to provide a 2A continuous output current over a wide input supply range, with excellent load and line regulation. ECOT control operation provides very fast transient response and easy loop design as well as very tight output regulation. The RY9121E requires a minimal number of readily available, external components and is available in a space saving SOT23-6 package.

The RY8336 is a high frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to provide a 3A continuous current over a wide input supply range, with excellent load and line regulation. The RY8336 requires a minimal number of readily available, external components and is available in a space saving ESOP8 package.

The RY8320 is a high frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to provide a 2A continuous current over a wide input supply range,with excellent load and line regulation. The RY8320 requires a minimal number of readily available, external components and is available in a space saving SOT23-6 package

The RY8510 device is high-efficiency, synchronous step-down DC/DC regulators. With a wide input range, it issuitable for a wide range of applications, such as power conditioning from unregulated sources. It features a lowRDSON (500m?/300m? typical) internal switch for maximum efficiency (92% typical). Supports PSM mode, theoperating frequency is fixed at 850kHz, allowing the use of small external components while still being able to havelow output voltage ripple. With OVP function, the IC can stand off input voltage as high as 50V