TAS2781

現行

25W、4.5V 至 23V、數位輸入整合式音訊處理喇叭保護 D 類放大器

立即訂購

產品規格表

document-pdfAcrobat TAS2781 24-V Class-D Amplifier with Real Time Integrated Speaker Protection and Audio Processing datasheet (Rev. B) (英文) PDF | HTML

TAS2781

現行

立即訂購

產品詳細資料

Output power (W)

25

Power stage supply (max) (V)

23

Power stage supply (min) (V)

4.5

Speaker channels (max)

Mono

Architecture

Class-D, Smart Amp

Audio input type

Digital Input

Control interface

I2C, SPI, Shutdown Mode

Analog supply voltage (min) (V)

1.65

Analog supply voltage (max) (V)

1.95

Load (min) (Ω)

3.2

THD + N at 1 kHz (%)

0.006

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Output power (W)

25

Power stage supply (max) (V)

23

Power stage supply (min) (V)

4.5

Speaker channels (max)

Mono

Architecture

Class-D, Smart Amp

Audio input type

Digital Input

Control interface

I2C, SPI, Shutdown Mode

Analog supply voltage (min) (V)

1.65

Analog supply voltage (max) (V)

1.95

Load (min) (Ω)

3.2

THD + N at 1 kHz (%)

0.006

Rating

Catalog

Operating temperature range (°C)

-40 to 85

VQFN-HR (RYY)

30

14 mm² (3.5 mm × 4 mm)

Integrated DSP for audio processing
24-V Supply for class-d output stage
Y-Bridge multi-level supply architecture
Hybrid-pro external boost control algorithm
Ultrasonic output support up to 40 kHz

25 W, 1% THD+N (4 Ω, 18 V)
30 W Maximum output power, 10% THD+N

82% at 1W, 4 Ω, PVDDH = 12 V, PVDDL = 3.8 V
83% at 1W, 8 Ω, PVDDH = 18 V, PVDDL = 5 V
84% at 1W, 4 Ω, PVDDH = 18 V, PVDDL = 5 V
90% at 15W, 4 Ω, PVDDH = 18 V, PVDDL = 5 V
93% at 15W , 8 Ω, PVDDH = 18 V, PVDDL = 5 V
<0.5 µA in Hardware Shutdown Mode

AVDD: 1.8 V
IOVDD: 1.8 V/ 3.3 V
PVDDL: 2.7 V to 5.5 V
PVDDH: 3 V to 24 V

SDOUT for echo cancellation
I 2S/TDM: 8 channels of 32 bits up to 192 KSPS
I 2C with fast mode+ or SPI
Inter-chip communication bus
16 kHz to 192 kHz sample rates

Real-time IV-sense for speaker protection
Dynamic range compressor
Brownout protection with power limiter
Multi-channel balancing communication

Over power and low battery protection
PVDDH/ PVDDL supply tracking limiters
Thermal and over current protections
Thermal foldback
Post filter feedback and slew rate control

Integrated DSP for audio processing
24-V Supply for class-d output stage
Y-Bridge multi-level supply architecture
Hybrid-pro external boost control algorithm
Ultrasonic output support up to 40 kHz

25 W, 1% THD+N (4 Ω, 18 V)
30 W Maximum output power, 10% THD+N

82% at 1W, 4 Ω, PVDDH = 12 V, PVDDL = 3.8 V
83% at 1W, 8 Ω, PVDDH = 18 V, PVDDL = 5 V
84% at 1W, 4 Ω, PVDDH = 18 V, PVDDL = 5 V
90% at 15W, 4 Ω, PVDDH = 18 V, PVDDL = 5 V
93% at 15W , 8 Ω, PVDDH = 18 V, PVDDL = 5 V
<0.5 µA in Hardware Shutdown Mode

AVDD: 1.8 V
IOVDD: 1.8 V/ 3.3 V
PVDDL: 2.7 V to 5.5 V
PVDDH: 3 V to 24 V

SDOUT for echo cancellation
I 2S/TDM: 8 channels of 32 bits up to 192 KSPS
I 2C with fast mode+ or SPI
Inter-chip communication bus
16 kHz to 192 kHz sample rates

Real-time IV-sense for speaker protection
Dynamic range compressor
Brownout protection with power limiter
Multi-channel balancing communication

Over power and low battery protection
PVDDH/ PVDDL supply tracking limiters
Thermal and over current protections
Thermal foldback
Post filter feedback and slew rate control

The TAS2781 is a mono, digital input Class-D audio amplifier optimized for efficiently driving high peak power into loudspeakers. The Class-D amplifier is capable of delivering 25 W of continuous power into a 4 Ω load with less than 1% THD+N at a supply voltage of 18 V. The broad voltage input range and the high output power makes this amplifier versatile enough to work with battery or line powered systems.

An on-chip DSP supports Texas Instruments Smart Amp speaker protection algorithm. The integrated speaker voltage and current sense provides for real-time monitoring of loudspeakers.

Y-Bridge power architecture improves amplifier efficiency by internally selecting the supplies for optimal headroom. Brownout prevention scheme with adjustable threshold allows reducing the gain in signal path when the supply drops.

The Hybrid-Pro algorithm allows user to optimize efficiency and improve battery life by controlling the external power supply.

Up to eight TAS2781 devices can share a common bus via I 2S/TDM and I 2C/SPI interfaces.

The TAS2781 is available in a 30 pin HR-QFN package for a compact PCB footprint.

The TAS2781 is a mono, digital input Class-D audio amplifier optimized for efficiently driving high peak power into loudspeakers. The Class-D amplifier is capable of delivering 25 W of continuous power into a 4 Ω load with less than 1% THD+N at a supply voltage of 18 V. The broad voltage input range and the high output power makes this amplifier versatile enough to work with battery or line powered systems.

An on-chip DSP supports Texas Instruments Smart Amp speaker protection algorithm. The integrated speaker voltage and current sense provides for real-time monitoring of loudspeakers.

Y-Bridge power architecture improves amplifier efficiency by internally selecting the supplies for optimal headroom. Brownout prevention scheme with adjustable threshold allows reducing the gain in signal path when the supply drops.

The Hybrid-Pro algorithm allows user to optimize efficiency and improve battery life by controlling the external power supply.

Up to eight TAS2781 devices can share a common bus via I 2S/TDM and I 2C/SPI interfaces.

The TAS2781 is available in a 30 pin HR-QFN package for a compact PCB footprint.

filter

尋找其它 PC 與筆記型電腦音訊放大器

下載觀看有字幕稿的影片影片

索取更多資訊

若要要求存取 TAS2781 PurePath™ Console 軟體及其它設計資源：立即索取

您可能會感興趣的類似產品

open-in-new

比較替代產品

針腳對針腳的功能與所比較的裝置相同。

TAS2780

現行

具有用於喇叭防護的 I/V 感測功能的 25W、數位輸入、4.5V 至 24V 6A 峰值智慧型放大器 Without miniDSP

技術文件

找不到結果。請清除您的搜尋條件，然後再試一次。

檢視所有 12

重要文件	類型	標題	格式選項
*	資料表	TAS2781 24-V Class-D Amplifier with Real Time Integrated Speaker Protection and Audio Processing datasheet (Rev. B)	PDF \| HTML	2023/1/26
	應用說明	Class-D Amplifiers Driving High-Inductance Loads in Speakers and Haptics Coils	PDF \| HTML	2026/6/24
	應用說明	TAS2781 and TAS2783 Schematic and Layout Guidelines (Rev. A)	PDF \| HTML	2026/5/19
	Application brief	Speaker, TV, Soundbar Audio Amplifiers: Features, Benefits, and Selection Guide	PDF \| HTML	2026/3/11
	應用說明	Y-Bridge in TAS278x Class-D Amplifiers for Improving Efficiency (Rev. A)	PDF \| HTML	2025/9/24
	Application brief	The Future Speaks: Advancing Intelligent Robots With Texas Instruments' Audio Amplifiers	PDF \| HTML	2025/9/22
	應用說明	EMI Filter Selection in Class-D Amplifier a Post Filter Feedback Benefits and Design Considerations for TAS27X	PDF \| HTML	2024/7/2
	應用說明	TAS2781, TAS2783 Audio Enhancement (Rev. A)	PDF \| HTML	2024/4/30
	應用說明	TAS27xx Introduction to Click and Pop Noise Measurement in Class-D Audio Amplifiers	PDF \| HTML	2024/3/26
	應用說明	TAS2781 and TAS2783 Hybrid-Pro Boost Controller	PDF \| HTML	2022/10/8
	應用說明	Limitations of Capacitor only EMI Filters on Class-D Amplifiers	PDF \| HTML	2020/7/21
	應用說明	Requesting Access to Audio Software		2020/6/18

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

TAS2781EVM — 具數位輸入與揚聲器 IV 感測的單聲道 D 類音訊放大器 TAS2781 評估模組

TAS2781EVM 設計為獨立評估模組，提供使用者將 TI 智慧放大器 TAS2781 整合至終端系統的工具。此 EVM 使用 TAS2781 智慧型放大器提供單聲道揚聲器輸出。使用者可使用 PurePath Console 3 軟體控制及設定 TAS2781EVM，並適當調整 TI 提供的演算法。這些功能可量身打造 SoC 性能，以滿足使用者終端設備需求。

使用指南: PDF | HTML

支援產品和硬體

有庫存

限制：

登入以進行訂購

lock

登入以檢視庫存

??asset.out-of-stock-ti_zh_TW??

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 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 (...)

支援產品和硬體

要求

應用軟體及架構

TAS2781-LINUX — TAS2781 Linux Driver and Factory Calibration tool

TAS2781 Linux Driver supports configuring registers through binary file, Factory Calibration tool is used to calibrate the impedance of the speaker in manufacturing and keep consistent loudness from system to system.

支援產品和硬體

啟動

下載選項

驅動程式或資料庫