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TAS2781

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Amplificador clase D de 25 W, 4.5 V a 23 V, con procesamiento de audio digital integrado y protecció

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TAS2781

ACTIVO
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Detalles del producto

Audio input type Digital Input Architecture Class-D, Smart Amp Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 23 Power stage supply (min) (V) 4.5 Load (min) (Ω) 3.2 Output power (W) 25 SNR (dB) 110 THD + N at 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 voltage (max) (V) 1.95 Sampling rate (max) (kHz) 192 PSRR (dB) 110 Operating temperature range (°C) -40 to 85
Audio input type Digital Input Architecture Class-D, Smart Amp Speaker channels (max) Mono Rating Catalog Power stage supply (max) (V) 23 Power stage supply (min) (V) 4.5 Load (min) (Ω) 3.2 Output power (W) 25 SNR (dB) 110 THD + N at 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 voltage (max) (V) 1.95 Sampling rate (max) (kHz) 192 PSRR (dB) 110 Operating temperature range (°C) -40 to 85
VQFN-HR (RYY) 30 14 mm² 3.5 x 4
  • 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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Documentación técnica

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* Data sheet TAS2781 24-V Class-D Amplifier with Real Time Integrated Speaker Protection and Audio Processing datasheet (Rev. B) PDF | HTML 26 ene 2023
Application note TAS2781, TAS2783 Audio Enhancement (Rev. A) PDF | HTML 30 abr 2024
Application note TAS27xx Introduction to Click and Pop Noise Measurement in Class-D Audio Amplifiers PDF | HTML 26 mar 2024
Application note TAS2781 and TAS2783 Hybrid-Pro Boost Controller PDF | HTML 08 oct 2022
User guide TAS2781EVM User's Guide PDF | HTML 28 jun 2022
Application note Y-Bridge in Class-D Amplifiers for Improving Efficiency PDF | HTML 19 nov 2021
Application note Limitations of Capacitor only EMI Filters on Class-D Amplifiers PDF | HTML 21 jul 2020
Application note Requesting Access to Audio Software 18 jun 2020

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

TAS2781EVM — Módulo de evaluación TAS2781 para amplificador de audio mono de clase D con entrada digital y sensor

El TAS2781EVM está diseñado para utilizarse como módulo de evaluación independiente y proporciona al usuario las herramientas necesarias para integrar el amplificador inteligente TAS2781 de TI en el sistema final. Este EVM proporciona salida de altavoz mono utilizando el amplificador (...)
Guía del usuario: PDF | HTML
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Software de aplicación y estructura

PUREPATHCONSOLE — Conjunto de aplicaciones de desarrollo gráfico de consola PurePath™ para diseño y desarrollo de sist

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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Software de aplicación y estructura

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.
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Amplificadores para altavoces
TAS2781 — Amplificador clase D de 25 W, 4.5 V a 23 V, con procesamiento de audio digital integrado y protecció
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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Paquete Pasadores Descargar
VQFN-HR (RYY) 30 Ver opciones
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Los productos recomendados pueden tener parámetros, módulos de evaluación o diseños de referencia relacionados con este producto de TI.

Soporte y capacitación

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