TAS2780
25-W, digital input, 4.5-V to 24-V 6-A peak smart amp with I/V sense for speaker protection
TAS2780
- 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.
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Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | TAS2780 Digital Input Mono Class-D Audio Amplifier With Speaker IV Sense datasheet (Rev. B) | PDF | HTML | 05 Jan 2023 |
Application note | TAS27xx Introduction to Click and Pop Noise Measurement in Class-D Audio Amplifiers | PDF | HTML | 26 Mar 2024 | |
Application note | Y-Bridge in Class-D Amplifiers for Improving Efficiency | PDF | HTML | 19 Nov 2021 | |
User guide | TAS2780EVM User's Guide (Rev. A) | 28 Oct 2021 | ||
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 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
TAS2780EVM — TAS2780 evaluation module digital input mono Class-D audio amplifier with speaker IV sense
The TAS2780EVM evaluation module (EVM) is used to evaluate the TAS2780, a digital input mono Class-D audio amplifier with speaker IV sense. The EVM is designed to be used as stand-alone evalution tool and provides the designer with the tools to integrate the TAS2780 amplifier into (...)
PUREPATHCONSOLE — PurePath™ Console graphical development suite for audio system design and development
PurePath Console’s (...)
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
Package | Pins | Download |
---|---|---|
VQFN-HR (RYA) | 30 | View options |
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