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音訊、觸覺和壓電
音訊放大器
通用型音訊放大器

TAS2557

現行

具有整合式喇叭防護、先進 EQ 和 8.5-V H 類升壓的 5.7-W、數位輸入智慧型放大器

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產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同，但針腳輸出與所比較的裝置不同。
TAS2572 現行 具有 I/V 感測和整合式 13V H 類升壓功能的 6.6W 數位輸入智慧放大器 Higher output power and improved distortion and noise
TAS2563 現行 具有整合式喇叭防護、先進 EQ 和 11V H 類升壓的 6.1W 數位輸入智慧型放大器 Higher output power to 6.1W and upto 11V boost

TAS2557

現行
產品規格表 立即訂購

產品詳細資料

Audio input type Digital Input Architecture Class-D Boosted, Smart Amp Speaker channels (max) Mono Control interface I2C, SPI Output power (W) 5.7 Power stage supply (max) (V) 8.5 Power stage supply (min) (V) 2.7 THD + N at 1 kHz (%) 0.0035 Load (min) (Ω) 4 Analog supply voltage (min) (V) 2.9 Analog supply voltage (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
Audio input type Digital Input Architecture Class-D Boosted, Smart Amp Speaker channels (max) Mono Control interface I2C, SPI Output power (W) 5.7 Power stage supply (max) (V) 8.5 Power stage supply (min) (V) 2.7 THD + N at 1 kHz (%) 0.0035 Load (min) (Ω) 4 Analog supply voltage (min) (V) 2.9 Analog supply voltage (max) (V) 5.5 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YZ) 42 See data sheet
  • Ultra low-noise mono boosted class-D amplifier
    • 5.7 W at 1% THD+N and 6.9 W at 10% THD+N into 4-Ω load from 4.2-V supply
    • 3.8 W at 1% THD+N and 4.5 W at 10% THD+N into 8-Ω load from 4.2-V supply
  • Output noise for DAC + class-D (ICN) is 15.9 µV
  • DAC + class-D SNR 111 dB at 1%THD+N/8 Ω
  • THD+N –90 dB at 1 W / 8 Ω with flat frequency response
  • Post-filter feedback (PFFB)
  • PSRR 110 dB for 200 mVpp ripple at 217 Hz
  • Input sample rates from 8 kHz to 96 kHz
  • Built-in speaker sense
    • Measures speaker current and voltage
    • Measures VBAT voltage, chip temperature
  • Dedicated real-time dual-core DSP for speaker protection
    • Thermal and excursion protection
    • Detects speaker leaks and damage
  • High efficiency class-H boost converter with multi-level tracking
    • 86% at 500 mW in 8 Ω with 3.6 V VBAT
    • 87% at 700 mW in 8 Ω with 4.2 V VBAT
  • Configurable automatic gain control (AGC)
    • Limits battery current consumption
  • Adjustable class-D switching edge-rate control
  • Thermal, short-circuit, and under-voltage protection
  • I2S, Left-justified, right-justified, DSP, and TDM input and output interface,
  • I2C or SPI interface for register control
  • Stereo configuration using two TAS2557 devices
  • Power supplies
    • Boost input: 2.9 V to 5.5 V
    • Analog/digital: 1.65 V to 1.95 V
    • Digital I/O: 1.62 V to 3.6 V
  • 42-ball, 0.5-mm pitch, DSBGA package
  • Ultra low-noise mono boosted class-D amplifier
    • 5.7 W at 1% THD+N and 6.9 W at 10% THD+N into 4-Ω load from 4.2-V supply
    • 3.8 W at 1% THD+N and 4.5 W at 10% THD+N into 8-Ω load from 4.2-V supply
  • Output noise for DAC + class-D (ICN) is 15.9 µV
  • DAC + class-D SNR 111 dB at 1%THD+N/8 Ω
  • THD+N –90 dB at 1 W / 8 Ω with flat frequency response
  • Post-filter feedback (PFFB)
  • PSRR 110 dB for 200 mVpp ripple at 217 Hz
  • Input sample rates from 8 kHz to 96 kHz
  • Built-in speaker sense
    • Measures speaker current and voltage
    • Measures VBAT voltage, chip temperature
  • Dedicated real-time dual-core DSP for speaker protection
    • Thermal and excursion protection
    • Detects speaker leaks and damage
  • High efficiency class-H boost converter with multi-level tracking
    • 86% at 500 mW in 8 Ω with 3.6 V VBAT
    • 87% at 700 mW in 8 Ω with 4.2 V VBAT
  • Configurable automatic gain control (AGC)
    • Limits battery current consumption
  • Adjustable class-D switching edge-rate control
  • Thermal, short-circuit, and under-voltage protection
  • I2S, Left-justified, right-justified, DSP, and TDM input and output interface,
  • I2C or SPI interface for register control
  • Stereo configuration using two TAS2557 devices
  • Power supplies
    • Boost input: 2.9 V to 5.5 V
    • Analog/digital: 1.65 V to 1.95 V
    • Digital I/O: 1.62 V to 3.6 V
  • 42-ball, 0.5-mm pitch, DSBGA package

The TAS2557 device is a state-of-the-art Class-D audio amplifier which is a full system on a Chip (SoC). The device features a ultra low-noise audio DAC and Class-D power amplifier which incorporates speaker voltage and current sensing feedback. An on-chip, low-latency DSP supports Texas Instruments SmartAmp speaker protection algorithms to maximizes loudness while maintaining safe speaker conditions.

The device can be used easily with any processor with an I2S output and stereo implementations are possible when using two TAS2557 devices. Separate tuning for different speakers is supported allowing customers to add value while maintaining form factor designs. Additionally, the TAS2557 supports separate voice and audio tuning dynamically with ultra-low 15.9 µV ICN regardless of mode of operation making receiver/speaker implementations possible.

A Class-H boost converter generates the Class-D amplifier supply rail. When the audio signal only requires a lower Class-D output power, the boost improves system efficiency by deactivating and connecting VBAT directly to the Class-D amplifier supply. When higher audio output power is required, the multi-level boost quickly activates tracking the signal to provide the additional voltage to the load.

The TAS2557 device is a state-of-the-art Class-D audio amplifier which is a full system on a Chip (SoC). The device features a ultra low-noise audio DAC and Class-D power amplifier which incorporates speaker voltage and current sensing feedback. An on-chip, low-latency DSP supports Texas Instruments SmartAmp speaker protection algorithms to maximizes loudness while maintaining safe speaker conditions.

The device can be used easily with any processor with an I2S output and stereo implementations are possible when using two TAS2557 devices. Separate tuning for different speakers is supported allowing customers to add value while maintaining form factor designs. Additionally, the TAS2557 supports separate voice and audio tuning dynamically with ultra-low 15.9 µV ICN regardless of mode of operation making receiver/speaker implementations possible.

A Class-H boost converter generates the Class-D amplifier supply rail. When the audio signal only requires a lower Class-D output power, the boost improves system efficiency by deactivating and connecting VBAT directly to the Class-D amplifier supply. When higher audio output power is required, the multi-level boost quickly activates tracking the signal to provide the additional voltage to the load.
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若要申請存取 PurePathâ„¢ Console 3 和其他設計資源的權限：索取 TAS2557

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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TAS2557 5.7-W Class-D mono audio amplifier with class-H boost and speaker sense datasheet (Rev. B) PDF | HTML 2019/2/28
技術文章 How smart amps are bringing high-fidelity audio into the smart home PDF | HTML 2021/5/3
應用說明 Limitations of Capacitor only EMI Filters on Class-D Amplifiers PDF | HTML 2020/7/21
應用說明 Current and Voltage Sensing Accuracy and Linearity PDF | HTML 2020/7/21
應用說明 Requesting Access to Audio Software 2020/6/18
使用指南 SmartAmp Learning Board 2 User's Guide (Rev. A) 2019/9/13
應用說明 Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 2019/8/26
應用說明 Passive Component Selection Guide for Class-D Audio Amplifier 2019/6/27
應用說明 Battery Voltage Tracking Limiter and Brown-Out Protection PDF | HTML 2019/6/26
應用說明 PCB Layout Guidelines for TAS2xxx Series Class-D Boosted Audio Amplifier 2019/6/6
應用說明 Benefits of Class-G and Class-H Boost in Audio Amplifiers 2019/4/30
應用說明 PLL and Clocking Configuration for Audio Devices 2019/3/26
應用說明 How the SmartAmp Speaker Protection Algorithm Compensates the Effects of Series 2018/8/8
應用說明 SmartPA Speaker Protection Algorithm 2018/8/6
技術文章 Smart speakers don’t have to sound as small as they are PDF | HTML 2018/6/4
技術文章 Integrating next-generation linear resonance actuator systems PDF | HTML 2017/12/28
技術文章 Don’t limit your audio: how to achieve loud sound from a small speaker PDF | HTML 2017/12/18
應用說明 Post Filter Feedback Class-D Amplifier Benefits and Design Considerations 2017/11/14
技術文章 The next generation of linear resonance actuators PDF | HTML 2017/10/26
更多文件說明 Calibration and Verification Wave Files 2017/9/21
應用說明 TAS2557 and TAS2559 End System Integration Guide 2017/9/8
應用說明 Smart Amp Tuning Guide 2017/9/5
應用說明 TAS2555, TAS2557, and TAS2559 Factory Test and Calibration Guide 2017/9/2
應用說明 Smart Amp Quick Start Guide 2017/8/3
應用說明 AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 2013/5/1

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

PP-SALB2-EVM — PP-SALB2-EVM 智慧放大器喇叭特性化基板評估模組 (學習板 2)

此電路板支援：TAS2555YZEVM、TAS2557EVM 及 TAS2559EVM。

智慧型放大器喇叭特性化基板與支援的 TI 智慧型放大器和 PurePath Console 軟體一起使用時，可讓使用者測量喇叭偏移、溫度及其他參數，以搭配 TI 智慧型放大器產品使用。  整個解決方案提供方便使用的逐步程序，引導您完成整個喇叭特性化程序。  完成特性化後，喇叭參數會自動載入 PurePath Console 中，以便開始進行微調，並透過喇叭保護功能獲得最佳音質。

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開發板

TAS2557EVM — 具 H 級升壓和揚聲器感測的 TAS2557 5.7W D 類音訊放大器評估模組

TAS2557EVM 評估模組提供使用者強大的工具套件，可在搭配 PurePath™ Console 3 軟體套件 (PPC3) 使用時，完整評估 TAS2557 音訊放大器。評估模組隨附參考喇叭。電路板提供與 PC 的 USB 連線，並由 PPC3 軟體套件控制。PPC3 必須單獨下載。使用 PPC3，您可以根據需要進一步微調解決方案。將兩個 EVM 連接在一起，解決方案就能快速轉變為立體聲解決方案。

EVM 也包含與智慧放大器學習電路板 v2 的連線，可在使用 PPC3 進階功能時，針對您的應用特性分析其他喇叭。

使用指南: PDF
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應用軟體及架構

PUREPATHCONSOLE — PurePath™ Console graphical development suite for audio system design and development

PurePath™ Console 是一款高度整合且容易使用的音訊開發套件，專爲簡化音訊產品開發相關評估、配置和偵錯程序所設計。瞭解使用 PurePath™ Console 3 軟體有多簡單。

PurePath Console 的直覺式圖形介面無需進階音訊工程專業，因此讓音訊設計更加簡明直觀。在簡單易用的圖形介面中，實作 PurePath Console 的眾多進階控制功能，並以縮短產品開發時間為目標，為您實現高度最佳化的音訊性能、最低功耗和順暢系統整合。

支援的裝置：

PurePath™ Console 1：PCM5142、TAS5721、TAS5729MD、TAS5731 和 (...)
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驅動程式或資料庫

TAS2XXX-DRIVERS — 適用 TAS25XX 和 TAS27XX 系列 D 類放大器的 Android 和其他驅動程序

這些 Android 驅動程式支援 TI 的低功耗數位輸入 D 類音訊放大器裝置。「取得軟體」按鈕可連結至這些開放原始碼驅動程式的 git.ti.com 存放庫。
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模擬型號

TAS2557 IBIS Model

SLAM294.ZIP (50 KB) - IBIS 模型
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參考設計

TIDA-01589 — 具備雜訊消除與回波抵銷功能的高保真、近場雙向音訊參考設計

人機互動需要聲學介面，以提供全雙工免手持通訊。在免手持模式下，來自喇叭的部分遠端或近端音訊訊號會耦合至麥克風。此外，在雜訊環境中，除了可擷取有用的近端音訊訊號外，麥克風還會擷取環境雜訊。擷取的多麥克風音訊訊號會受到聲學背景雜訊及回波訊號破壞，這些訊號會大幅降低所需訊號的清晰度，並限制後續音訊處理系統的性能。此參考設計展示了雙麥克風，其用於透過立體聲 ADC 實現音訊輸入，透過低功耗 DSP 執行雜訊降低、聲音回波消除和其他音訊品質強化演算法。此設計還採用了 TI 智慧型放大器技術，可透過微型喇叭實現高品質、高 SPL 音訊輸出。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
DSBGA (YZ) 42 Ultra Librarian
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