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音訊放大器
通用型音訊放大器

TAS2555

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，但引腳輸出與所比較的裝置不同
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 TAS2557 features the Post-Filter Feedback (PFFB)
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

TAS2555

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 (%) 0.02 Load (min) (Ω) 4 Analog supply voltage (min) (V) 2.95 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 (%) 0.02 Load (min) (Ω) 4 Analog supply voltage (min) (V) 2.95 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 – dB at 1 W / 8 Ω with flat frequency response
  • PSRR 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 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 TAS2555 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 – dB at 1 W / 8 Ω with flat frequency response
  • PSRR 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 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 TAS2555 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 TAS2555 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 TAS2555 devices. Separate tuning for different speakers is supported allowing customers to add value while maintaining form factor designs. Additionally, the TAS2555 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 TAS2555 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 TAS2555 devices. Separate tuning for different speakers is supported allowing customers to add value while maintaining form factor designs. Additionally, the TAS2555 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 TAS2555

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重要文件 類型 標題 格式選項 日期
* Data sheet TAS2555 5.7-W Class-D mono audio amplifier with class-H boost and speaker sense datasheet (Rev. B) PDF | HTML 2019年 2月 28日
Technical article How smart amps are bringing high-fidelity audio into the smart home PDF | HTML 2021年 5月 3日
Application note Current and Voltage Sensing Accuracy and Linearity PDF | HTML 2020年 7月 21日
Application note Limitations of Capacitor only EMI Filters on Class-D Amplifiers PDF | HTML 2020年 7月 21日
Application note Requesting Access to Audio Software 2020年 6月 18日
User guide SmartAmp Learning Board 2 User's Guide (Rev. A) 2019年 9月 13日
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 2019年 8月 26日
Application note Passive Component Selection Guide for Class-D Audio Amplifier 2019年 6月 27日
Application note Battery Voltage Tracking Limiter and Brown-Out Protection PDF | HTML 2019年 6月 26日
Application note PCB Layout Guidelines for TAS2xxx Series Class-D Boosted Audio Amplifier 2019年 6月 6日
Application note Benefits of Class-G and Class-H Boost in Audio Amplifiers 2019年 4月 30日
Application note PLL and Clocking Configuration for Audio Devices PDF | HTML 2019年 3月 26日
Application note How the SmartAmp Speaker Protection Algorithm Compensates the Effects of Series 2018年 8月 8日
Application note SmartPA Speaker Protection Algorithm 2018年 8月 6日
Technical article Don’t limit your audio: how to achieve loud sound from a small speaker PDF | HTML 2017年 12月 18日
More literature Calibration and Verification Wave Files 2017年 9月 21日
Application note TAS2555 End System Integration Guide 2017年 9月 8日
Application note Smart Amp Tuning Guide 2017年 9月 5日
Application note TAS2555, TAS2557, and TAS2559 Factory Test and Calibration Guide 2017年 9月 2日
Application note Smart Amp Quick Start Guide 2017年 8月 3日
Technical article Audio loudness and quality evaluations for smart amplifier solutions PDF | HTML 2016年 1月 22日
Technical article PurePath Console 3 gets fine-tuned! PDF | HTML 2015年 11月 11日
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 2013年 5月 1日

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。

使用指南: PDF
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開發板

TAS2555YZEVM — TAS2555 5.7W D 類音訊放大器評估模組

The TAS2555YZEVM evaluation module provides users with an small reference board for complete evaluation of the TAS2555 Audio Amplifier. Shipped complete with a reference speaker, users can quickly hear the audio quality of the TAS2555 solution or start developing on their own speaker/application. (...)

使用指南: PDF
TI.com 無法提供
應用軟體及架構

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

PurePath™ Console is a highly integrated and easy-to-use audio development suite designed specifically to simplify the evaluation, configuration and debug process associated with the development of audio products. Watch how easy it is to use the PurePath™ Console 3 software.

PurePath Console’s (...)
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SLAC723 — TAS2555SW-Android

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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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TAS2555SW-SA — TAS2555SW-SA EVM boards and Software for PurePath™ Smart Amp TAS2555

TAS2555SW-SA EVM boards and Software for PurePath™ Smart Amp TAS2555
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