Product details

Audio input type Digital Input Architecture Class-D, Smart Amp Speaker channels (Max) Mono Power stage supply (Max) (V) 16 Power stage supply (Min) (V) 4.5 Load (Min) (ohms) 4 Output power (W) 20 SNR (dB) 108 THD + N @ 1 kHz (%) 0.007 Iq (Typ) (mA) 7.07 Control interface I2C Closed/open loop Closed Analog supply (Min) (V) 4.5 Analog supply (Max) (V) 16 Sampling rate (Max) (kHz) 192 PSRR (dB) 90 Operating temperature range (C) -40 to 85
Audio input type Digital Input Architecture Class-D, Smart Amp Speaker channels (Max) Mono Power stage supply (Max) (V) 16 Power stage supply (Min) (V) 4.5 Load (Min) (ohms) 4 Output power (W) 20 SNR (dB) 108 THD + N @ 1 kHz (%) 0.007 Iq (Typ) (mA) 7.07 Control interface I2C Closed/open loop Closed Analog supply (Min) (V) 4.5 Analog supply (Max) (V) 16 Sampling rate (Max) (kHz) 192 PSRR (dB) 90 Operating temperature range (C) -40 to 85
DSBGA (YFF) 30 6 mm² 2.047 x 2.559 VQFN-HR (RJQ) 26 14 mm² 4 x 3.5
  • 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 mVPP 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
    • I2S/TDM: 8 Channels (32-bit / 96 kHz)
    • I2C: 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 mVPP 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
    • I2S/TDM: 8 Channels (32-bit / 96 kHz)
    • I2C: 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 I2S/TDM + I2C.

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 I2S/TDM + I2C.

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

Download

To request access to PurePath™ Console 3 and other design resources: Request TAS2770

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Technical documentation

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Type Title Date
* Data sheet TAS277020-W Digital Input Mono Class-D Audio Amplifier with Speaker I/V Sense datasheet (Rev. C) 20 Dec 2018
Technical article How smart amps are bringing high-fidelity audio into the smart home 03 May 2021
Application note Current and Voltage Sensing Accuracy and Linearity 21 Jul 2020
Application note Limitations of Capacitor only EMI Filters on Class-D Amplifiers 21 Jul 2020
Application note Requesting Access to Audio Software 18 Jun 2020
User guide SmartAmp Learning Board 2 User's Guide (Rev. A) 13 Sep 2019
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 26 Aug 2019
Application note PCB Layout Guidelines for TAS2xxx Series Class-D Non-boosted Audio Amplifier 27 Jun 2019
Application note Passive Component Selection Guide for Class-D Audio Amplifier 27 Jun 2019
Application note Battery Voltage Tracking Limiter and Brown-Out Protection 26 Jun 2019
Application note PLL and Clocking Configuration for Audio Devices 26 Mar 2019
Application note Features of TAS2770 high efficiency Class-D amplifier with I/V sense 23 Jan 2019
Application note How the SmartAmp Speaker Protection Algorithm Compensates the Effects of Series 08 Aug 2018
Application note SmartPA Speaker Protection Algorithm 06 Aug 2018
Technical article Smart speakers don’t have to sound as small as they are 04 Jun 2018
Technical article Don’t limit your audio: how to achieve loud sound from a small speaker 18 Dec 2017
User guide TAS2770 Evaluation Module User's Guide 10 Dec 2017
User guide TAS2700YFF Evaluation Module User's Guide 02 Nov 2017
User guide TAS2770EVM-Stereo User's Guide 15 Sep 2017
Application note Smart Amp Tuning Guide 05 Sep 2017
Application note Smart Amp Quick Start Guide 03 Aug 2017
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 01 May 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 (...)
In stock
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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 (...)
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 (...)
In stock
Limit: 1
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 (...)
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.
Simulation model

TAS2770 IBIS Model

SLAM324.ZIP (54 KB) - IBIS Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Reference designs

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 (...)
Package Pins Download
DSBGA (YFF) 30 View options
VQFN-HR (RJQ) 26 View options

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