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TAS2780

ACTIVE

25-W, digital input, 4.5-V to 24-V 6-A peak smart amp with I/V sense for speaker protection

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Data sheet

TAS2780

ACTIVE
Data sheet Order now

Product details

Audio input type Digital Input Architecture Class-D, Smart Amp Speaker channels (max) Mono Control interface I2C Output power (W) 25 Power stage supply (max) (V) 24 Power stage supply (min) (V) 4.5 Load (min) (Ω) 3.2 Analog supply voltage (min) (V) 3 Analog supply voltage (max) (V) 24 Rating Catalog Operating temperature range (°C) -40 to 85
Audio input type Digital Input Architecture Class-D, Smart Amp Speaker channels (max) Mono Control interface I2C Output power (W) 25 Power stage supply (max) (V) 24 Power stage supply (min) (V) 4.5 Load (min) (Ω) 3.2 Analog supply voltage (min) (V) 3 Analog supply voltage (max) (V) 24 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN-HR (RYA) 30 14 mm² 3.5 x 4
  • 24-V Supply for Class-D Output Stage
  • Y-Bridge Multi-Level Supply Architecture
  • Spread Spectrum Control
  • Ultrasonic Output Support up to 40 kHz
  • 25 W, 1% THD+N (4 Ω, 18 V)
  • 30 W Maximum Output Power, 10 % THD+N
  • 83% at 1W, 4 Ω, PVDD = 12 V, VBAT1S = 3.8 V
  • 83% at 1W, 8 Ω, PVDD = 18 V, VBAT1S = 5 V
  • 85% at 1W, 4 Ω, PVDD = 18 V, VBAT1S = 5 V
  • 89% at 15W, 4 Ω, PVDD = 18 V, VBAT1S = 5 V
  • 93% at 15W , 8 Ω, PVDD = 18 V, VBAT1S = 5 V
  • <0.5 µA in Hardware Shutdown Mode
  • PVDD: 3 V to 24 V
  • VBAT1S: 2.7 V to 5.5 V
  • AVDD: 1.8 V
  • IOVDD: 1.8 V/ 3.3 V
  • SDOUT for Echo Cancellation
  • I2S/TDM: 8 Channels of 32 bits up to 96 KSPS
  • I2C: Selectable Addresses with Fast Mode+
  • Inter-Chip Communication Bus
  • 44.1 kHz to 96 kHz Sample Rates
  • Real-time IV-Sense for Speaker Protection
  • Short and Open Load Protection
  • Thermal and Over Current Protection
  • Brownout Protection with Power Limiter
  • Over Power and Low Battery Protection
  • PVDD and VBAT1S Supply Tracking Limiters
  • Thermal Foldback
  • Post Filter Feedback
  • Output Slew Rate Control
  • 24-V Supply for Class-D Output Stage
  • Y-Bridge Multi-Level Supply Architecture
  • Spread Spectrum Control
  • Ultrasonic Output Support up to 40 kHz
  • 25 W, 1% THD+N (4 Ω, 18 V)
  • 30 W Maximum Output Power, 10 % THD+N
  • 83% at 1W, 4 Ω, PVDD = 12 V, VBAT1S = 3.8 V
  • 83% at 1W, 8 Ω, PVDD = 18 V, VBAT1S = 5 V
  • 85% at 1W, 4 Ω, PVDD = 18 V, VBAT1S = 5 V
  • 89% at 15W, 4 Ω, PVDD = 18 V, VBAT1S = 5 V
  • 93% at 15W , 8 Ω, PVDD = 18 V, VBAT1S = 5 V
  • <0.5 µA in Hardware Shutdown Mode
  • PVDD: 3 V to 24 V
  • VBAT1S: 2.7 V to 5.5 V
  • AVDD: 1.8 V
  • IOVDD: 1.8 V/ 3.3 V
  • SDOUT for Echo Cancellation
  • I2S/TDM: 8 Channels of 32 bits up to 96 KSPS
  • I2C: Selectable Addresses with Fast Mode+
  • Inter-Chip Communication Bus
  • 44.1 kHz to 96 kHz Sample Rates
  • Real-time IV-Sense for Speaker Protection
  • Short and Open Load Protection
  • Thermal and Over Current Protection
  • Brownout Protection with Power Limiter
  • Over Power and Low Battery Protection
  • PVDD and VBAT1S Supply Tracking Limiters
  • Thermal Foldback
  • Post Filter Feedback
  • Output Slew Rate Control

The TAS2780 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.

The TAS2780 can be used as a conventional amp or with host-based speaker protection algorithms. The integrated speaker voltage and current sense provides for real time feedback of loudspeaker conditions to the protection algorithms through a return I2S path.

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

Up to eight TAS2780 devices can share a common bus via I2S/TDM and I2C/SPI interfaces.

The TAS2780 is available in a 30 pin HR-QFN package for a compact PCB footprint.

The TAS2780 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.

The TAS2780 can be used as a conventional amp or with host-based speaker protection algorithms. The integrated speaker voltage and current sense provides for real time feedback of loudspeaker conditions to the protection algorithms through a return I2S path.

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

Up to eight TAS2780 devices can share a common bus via I2S/TDM and I2C/SPI interfaces.

The TAS2780 is available in a 30 pin HR-QFN package for a compact PCB footprint.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TAS2780 Digital Input Mono Class-D Audio Amplifier With Speaker IV Sense datasheet (Rev. B) PDF | HTML 05 Jan 2023
Application brief Speaker, TV, Soundbar Audio Amplifiers: Features, Benefits, and Selection Guide PDF | HTML 11 Mar 2026
Application note Y-Bridge in TAS278x Class-D Amplifiers for Improving Efficiency (Rev. A) PDF | HTML 24 Sep 2025
Application note EMI Filter Selection in Class-D Amplifier a Post Filter Feedback Benefits and Design Considerations for TAS27X PDF | HTML 02 Jul 2024
Application note TAS27xx Introduction to Click and Pop Noise Measurement in Class-D Audio Amplifiers PDF | HTML 26 Mar 2024
Certificate TAS2780EVM EU RoHS Declaration of Conformity (DoC) 21 May 2021
Technical article How smart amps are bringing high-fidelity audio into the smart home PDF | HTML 03 May 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
Application note PCB Layout Guidelines for TAS2xxx Series Class-D Non-boosted Audio Amplifier 27 Jun 2019

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