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TAS2770

ACTIVE

20-W, digital input, 4.5- to 18-V smart amp with I/V sense for speaker protection

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Data sheet

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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 Higher output power to 25W and wider Vin upto 24V

TAS2770

ACTIVE
Data sheet Order now

Product details

Output power (W) 20 Power stage supply (max) (V) 16 Power stage supply (min) (V) 4.5 Speaker channels (max) Mono Architecture Class-D, Smart Amp Audio input type Digital Input Control interface I2C Analog supply voltage (min) (V) 4.5 Analog supply voltage (max) (V) 16 Load (min) (Ω) 4 THD + N at 1 kHz (%) 0.007 Rating Catalog Operating temperature range (°C) -40 to 85
Output power (W) 20 Power stage supply (max) (V) 16 Power stage supply (min) (V) 4.5 Speaker channels (max) Mono Architecture Class-D, Smart Amp Audio input type Digital Input Control interface I2C Analog supply voltage (min) (V) 4.5 Analog supply voltage (max) (V) 16 Load (min) (Ω) 4 THD + N at 1 kHz (%) 0.007 Rating Catalog Operating temperature range (°C) -40 to 85
DSBGA (YFF) 30 5.71999999999999912 mm² (— mm × — mm) VQFN-HR (RJQ) 26 14 mm² (4 mm × 3.5 mm)
  • High-Performance Mono Class-D Amplifier
    • 20-W at 1% THD+N (4 Ω, 16 V)
    • 15 .4-W at 1 % THD+N (4 Ω, 12.6 V)
  • 0.03 % THD+N at 1 W (4 Ω, VBAT = 12.6 V)
  • 32-µVrms A-Weighted Idle Channel noise
  • 90-dB PSRR with 200 mV PP Ripple at 20 - 20 kHz
  • 82.5% Efficiency at 1 W (4 Ω, VBAT = 12.6 V)
  • < 1 µA HW Shutdown VBAT Current
  • 42 mW / 63 mW Idle Dissipation (8.4 V / 12.6 V)
  • Speaker Voltage and Current Sense
  • Real-Time Diagnostics Using I/V Speaker Sense
    • Over Current
    • Short Circuit(short to power, short to ground and terminal-to-terminal short)
    • Over-Temperature
  • VBAT Tracking Peak Voltage Limiter with Brown Out Prevention
  • 44.1-kHz to 192-kHz Sample Rates
  • Flexible User Interfaces
    • I 2S/TDM: 8 Channels (32-bit / 96 kHz)
    • I 2C: 8 selectable Addresses
  • MCLK Free Operation
  • Low Pop and Click
  • Power Supplies
    • VBAT: 4.5 V to 16 V
    • AVDD: 1.8 V
  • Spread-Spectrum Low EMI Mode
  • Thermal and Over Current Protection
  • High-Performance Mono Class-D Amplifier
    • 20-W at 1% THD+N (4 Ω, 16 V)
    • 15 .4-W at 1 % THD+N (4 Ω, 12.6 V)
  • 0.03 % THD+N at 1 W (4 Ω, VBAT = 12.6 V)
  • 32-µVrms A-Weighted Idle Channel noise
  • 90-dB PSRR with 200 mV PP Ripple at 20 - 20 kHz
  • 82.5% Efficiency at 1 W (4 Ω, VBAT = 12.6 V)
  • < 1 µA HW Shutdown VBAT Current
  • 42 mW / 63 mW Idle Dissipation (8.4 V / 12.6 V)
  • Speaker Voltage and Current Sense
  • Real-Time Diagnostics Using I/V Speaker Sense
    • Over Current
    • Short Circuit(short to power, short to ground and terminal-to-terminal short)
    • Over-Temperature
  • VBAT Tracking Peak Voltage Limiter with Brown Out Prevention
  • 44.1-kHz to 192-kHz Sample Rates
  • Flexible User Interfaces
    • I 2S/TDM: 8 Channels (32-bit / 96 kHz)
    • I 2C: 8 selectable Addresses
  • MCLK Free Operation
  • Low Pop and Click
  • Power Supplies
    • VBAT: 4.5 V to 16 V
    • AVDD: 1.8 V
  • Spread-Spectrum Low EMI Mode
  • Thermal and Over Current Protection

The TAS2770 is a mono, digital input Class-D audio amplifier optimized for efficiently driving small loudspeakers . The output power, protection features and packages make TAS2770 a good choice for Smart speakers, Bluetooth speakers, home automation devices, Notebook computers and tablets.

The Class-D amplifier is capable of delivering 20W of continuous power into a 4-Ω load at 16V and 15W into an 8-Ω load at 16V both at 1% THD. The broad voltage input range of 4.5-16V and the high output power makes this amplifier versatile enough to work with battery power or with line powered systems

A Brown-Out preventer tracks peak voltage and automatically self-limits the gain to the voltage available. This hardware implemented feature reduces the amplifier’s demand on system power preventing both audio cut out and system shutdown

The TAS2770 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.

Up to eight devices can share a common bus via either I 2S/TDM + I 2C.

The TAS2770 device is available in a 26-pin, 0.4-mm pitch QFN for a compact PCB footprint.

The TAS2770 is a mono, digital input Class-D audio amplifier optimized for efficiently driving small loudspeakers . The output power, protection features and packages make TAS2770 a good choice for Smart speakers, Bluetooth speakers, home automation devices, Notebook computers and tablets.

The Class-D amplifier is capable of delivering 20W of continuous power into a 4-Ω load at 16V and 15W into an 8-Ω load at 16V both at 1% THD. The broad voltage input range of 4.5-16V and the high output power makes this amplifier versatile enough to work with battery power or with line powered systems

A Brown-Out preventer tracks peak voltage and automatically self-limits the gain to the voltage available. This hardware implemented feature reduces the amplifier’s demand on system power preventing both audio cut out and system shutdown

The TAS2770 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.

Up to eight devices can share a common bus via either I 2S/TDM + I 2C.

The TAS2770 device is available in a 26-pin, 0.4-mm pitch QFN for a compact PCB footprint.
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Technical documentation

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* Data sheet TAS2770 20-W Digital Input Mono Class-D Audio Amplifier with Speaker I/V Sense datasheet (Rev. E) PDF | HTML Apr 5, 2023
Technical article How smart amps are bringing high-fidelity audio into the smart home PDF | HTML May 3, 2021
Application note Limitations of Capacitor only EMI Filters on Class-D Amplifiers PDF | HTML Jul 21, 2020
Application note Current and Voltage Sensing Accuracy and Linearity PDF | HTML Jul 21, 2020
Application note Requesting Access to Audio Software Jun 18, 2020
User guide SmartAmp Learning Board 2 User's Guide (Rev. A) Sep 13, 2019
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug 26, 2019
Application note Passive Component Selection Guide for Class-D Audio Amplifier Jun 27, 2019
Application note PCB Layout Guidelines for TAS2xxx Series Class-D Non-boosted Audio Amplifier Jun 27, 2019
Application note Battery Voltage Tracking Limiter and Brown-Out Protection PDF | HTML Jun 26, 2019
Application note PLL and Clocking Configuration for Audio Devices Mar 26, 2019
Application note Features of TAS2770 high efficiency Class-D amplifier with I/V sense Jan 23, 2019
Application note How the SmartAmp Speaker Protection Algorithm Compensates the Effects of Series Aug 8, 2018
Application note SmartPA Speaker Protection Algorithm Aug 6, 2018
Technical article Smart speakers don’t have to sound as small as they are PDF | HTML Jun 4, 2018
Technical article Don’t limit your audio: how to achieve loud sound from a small speaker PDF | HTML Dec 18, 2017
Application note Smart Amp Tuning Guide Sep 5, 2017
Application note Smart Amp Quick Start Guide Aug 3, 2017
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 1, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TAS2770EVM — TAS2770EVM Mono, Digital Input, Class-D, IV Sense Audio Amplifier Evaluation Module for QFN Package

The TAS2770EVM provides developers with a simple to use mono evaluation module that can be configured as a stereo solution and as a multi-channel solution. It is powerful tool kit for assessing stereo and mono implementations of the TAS2770 with or without IV sense. Everything needed for evaluating (...)
User guide: PDF
Supported products & hardware
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Evaluation board

TAS2770EVM-STEREO — Stereo Evaluation Module of the TAS2770 Digital Input, Class-D, IV Sense Audio Amplifier

The TAS2770EVM-Stereo evaluation module provides developers with a simple to use module pre-configured in as a stereo solution. It is powerful tool kit for assessing stereo or mono implementations of the TAS2770 with or without IV sense. Everything needed for evaluating TAS2770 as a conventional (...)
User guide: PDF
Supported products & hardware
Evaluation board

TAS2770YFFEVM — TAS2770YFFEVM Mono, Digital Input, Class-D, IV Sense Audio Amp Evaluation Module for WCSP Package

The TAS2770YFFEVM provides developers with a simple to use mono evaluation module that can be configured as a stereo solution and as a multi-channel solution. It is powerful tool kit for assessing stereo and mono implementations of the TAS2770 with or without IV sense. Everything needed for (...)
User guide: PDF
Supported products & hardware
In stock
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Application software & framework

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 (...)
Supported products & hardware
Driver or library

TAS2XXX-DRIVERS — Android and other drivers for the TAS25XX and TAS27XX series of Class-D amplifiers

These Android drivers support TI’s low power digital input Class-D audio amplifier devices. The "Get software" buttons link to git.ti.com repositories for these open-source drivers.
Supported products & hardware
Software codec

TAS2XXX-DRIVERS — Linux driver for TI's TAS2XXX families

TAS2xxx Linux driver supports TI's TAS device families. This Linux driver implements a flexible and configurable register setting for one or multiple devices in a bin file, will enable fast development for applications.
Supported products & hardware
Simulation model

TAS2770 IBIS Model

SLAM324.ZIP (54 KB) - IBIS model
Supported products & hardware
Reference design

TIDA-01572 — Stereo Evaluation Module Reference Design of the Digital Input, Class-D, IV Sense Audio Amplifier

This reference design provides a high-performance stereo audio subsystem for use in PC applications. It operates off a single supply, ranging from 4.5 V to 16 V, and features the TAS2770, a digital-input Class-D audio amplifier that provides excellent noise and distortion performance and is (...)
Supported products & hardware
Package Pins CAD symbols, footprints & 3D models
DSBGA (YFF) 30 Ultra Librarian
VQFN-HR (RJQ) 26 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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