TAS2781

활성

25W, 4.5V~23V, 디지털 입력 통합 오디오 프로세싱 스피커 보호 클래스 D 증폭기

지금 주문하기

데이터 시트

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

TAS2781

활성

데이터 시트

지금 주문하기

제품 상세 정보

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.

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추가 정보 요청

TAS2781 PurePath™ 콘솔 소프트웨어 및 기타 설계 리소스를 요청하세요. 지금 요청

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TAS2780

활성

스피커 보호를 위한 I/V 감지를 지원하는 25W, 디지털 입력, 4.5~24V, 6A 피크 스마트 증폭기 Without miniDSP

기술 자료

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12개 모두 보기

상위 문서	유형	직함	형식 옵션	날짜
*	데이터 시트	TAS2781 24-V Class-D Amplifier with Real Time Integrated Speaker Protection and Audio Processing datasheet (Rev. B)	PDF \| HTML	2023. 1. 26
	애플리케이션 노트	Class-D Amplifiers Driving High-Inductance Loads in Speakers and Haptics Coils	PDF \| HTML	2026. 6. 24
	애플리케이션 노트	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
	애플리케이션 노트	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
	애플리케이션 노트	EMI Filter Selection in Class-D Amplifier a Post Filter Feedback Benefits and Design Considerations for TAS27X	PDF \| HTML	2024. 7. 2
	애플리케이션 노트	TAS2781, TAS2783 Audio Enhancement (Rev. A)	PDF \| HTML	2024. 4. 30
	애플리케이션 노트	TAS27xx Introduction to Click and Pop Noise Measurement in Class-D Audio Amplifiers	PDF \| HTML	2024. 3. 26
	애플리케이션 노트	TAS2781 and TAS2783 Hybrid-Pro Boost Controller	PDF \| HTML	2022. 10. 8
	애플리케이션 노트	Limitations of Capacitor only EMI Filters on Class-D Amplifiers	PDF \| HTML	2020. 7. 21
	애플리케이션 노트	Requesting Access to Audio Software		2020. 6. 18

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

TAS2781EVM — TAS2781 디지털 입력 및 스피커 IV 센서가 탑재된 모노 클래스 D 오디오 증폭기용 평가 모듈

TAS2781EVM은 독립형 평가 모듈로 사용하도록 설계되었으며 사용자에게 TI의 스마트 증폭기 TAS2781을 최종 시스템에 통합할 수 있는 도구를 제공합니다. 이 EVM은 TAS2781 스마트 증폭기를 사용하는 모노 스피커 출력을 제공합니다. 사용자는 PurePath Console 3 소프트웨어를 사용하여 TAS2781EVM을 제어 및 구성하고 TI에서 제공하는 알고리즘을 적절하게 튜닝할 수 있습니다. 이러한 기능은 사용자의 완제품 요구 사항에 맞는 맞춤형 SoC 성능을 구현합니다.

사용 설명서: PDF | HTML

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이용할 수 없음

애플리케이션 소프트웨어 및 프레임워크

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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요청

애플리케이션 소프트웨어 및 프레임워크

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.

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