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 I²S/TDM and I²C/SPI interfaces.

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

• Integrated DSP for Audio Processing
• 23-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: 4.5 V to 23 V

• SDOUT for Echo Cancellation
• I2S/TDM: 8 Channels of 32 bits up to 192 KSPS
• I2C with Fast Mode+ or SPI Interface
• 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 Suply Tracking Limiters
• Thermal and Over Current Protections
• Thermal Foldback
• Post Filter Feedback and Slew Rate Control

• Audio input type
• Digital Input
• Architecture
• Class-D, Smart Amp
• Speaker channels (Max)
• Mono
• Power stage supply (Max) (V)
• 23
• Power stage supply (Min) (V)
• 4.5
• Load (Min) (ohms)
• 3.2
• Output power (W)
• 25
• SNR (dB)
• 110
• THD + N @ 1 kHz (%)
• 0.006
• Iq (Typ) (mA)
• 15
• Control interface
• I2C, SPI, Shutdown Mode
• Closed/open loop
• Closed
• Analog supply (Min) (V)
• 1.65
• Analog supply (Max) (V)
• 1.95
• Sampling rate (Max) (kHz)
• 192
• PSRR (dB)
• 110
• Operating temperature range (C)
• -40 to 85

TAS2781的完整型号有：PTAS2781RYYR，以下是这些产品的关键参数及官网采购报价：

PTAS2781RYYR，工作温度：-40 to 85，封装： (RYY)-30，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：-，引脚镀层/焊球材料：-，TI官网PTAS2781RYYR的批量USD价格：1.19（1000+）

TAS2781EVM — 适用于 TAS2781 具有数字输入和扬声器 IV 检测功能的单声道 D 类音频放大器的评估模块

TAS2781EVM 旨在用作独立的评估模块，并为用户提供将 TI 的智能放大器 TAS2781 集成到终端系统的工具。此 EVM 利用 TAS2781 智能放大器可提供单声道扬声器输出。用户可使用 PurePath Console 3 软件控制和配置 TAS2781EVM，并适当调整 TI 提供的算法。这些特性可实现定制的 SoC 性能，满足用户的终端设备需求。

PUREPATHCONSOLE — 适用于音频系统设计和开发的 PurePath 控制台图形开发套件

PurePath 控制台是一个高度集成且易于使用的音频开发套件，专门用于简化与音频产品开发相关的评估、配置和调试过程。观看视频，了解如何轻松使用 PurePath Console 3 软件。
PurePath 控制台的直观图形界面使音频设计非常直接，因为无需高级音频设计专业知识。以缩短生产开发时间为目的的易用图形界面中提供了许多 PurePath 控制台高级控制功能，这些功能有助于实现高度优化的音频性能、超低功耗和无缝系统集成。

支持的器件：

PurePath Console 1：PCM5142、TAS5721、TAS5729MD、TAS5731 和 TAS5760xx
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在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)