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TAS2770

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

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

TAS2770

ACTIVE
Data sheet Order now

Product details

Parameters

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 open-in-new Find other Speaker amps

Package | Pins | Size

DSBGA (YFF) 30 6 mm² 2.047 x 2.559 VQFN-HR (RJQ) 26 — open-in-new Find other Speaker amps

Features

  • 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

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Description

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.

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Download

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

Technical documentation

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Type Title Date
* Datasheet TAS277020-W Digital Input Mono Class-D Audio Amplifier with Speaker I/V Sense datasheet (Rev. C) Dec. 20, 2018
Application note Current and Voltage Sensing Accuracy and Linearity Jul. 21, 2020
Application note Limitations of Capacitor only EMI Filters on Class-D Amplifiers 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 PCB Layout Guidelines for TAS2xxx Series Class-D Non-boosted Audio Amplifier Jun. 27, 2019
Application note Passive Component Selection Guide for Class-D Audio Amplifier Jun. 27, 2019
Application note Battery Voltage Tracking Limiter and Brown-Out Protection 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. 08, 2018
Application note SmartPA Speaker Protection Algorithm Aug. 06, 2018
Technical article Smart speakers don’t have to sound as small as they are Jun. 04, 2018
Technical article Don’t limit your audio: how to achieve loud sound from a small speaker Dec. 18, 2017
User guide TAS2770 Evaluation Module User's Guide Dec. 10, 2017
User guide TAS2700YFF Evaluation Module User's Guide Nov. 02, 2017
User guide TAS2770EVM-Stereo User's Guide Sep. 15, 2017
Application note Smart Amp Tuning Guide Sep. 05, 2017
Application note Smart Amp Quick Start Guide Aug. 03, 2017
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
199
Description
To get started:

Step 1: Hardware
Order TAS2770EVM (for mono) or request TAS2770EVM-STEREO (for stereo) evaluation module & PP-SALB2-EVM learning board (if using speaker protection features)

Step 2: Software
Request PurePath Console 3 (PPC3) control GUI, be sure to indicate you are working with the (...)
Features
  • Stereo or Mono evaluation mode USB input
  • Connect up to eight boards
  • Interface to TAS2559YZEVM for speaker protection evaluation
  • Access to TAS2770 add-in PurePath Console 3
View details
EVALUATION BOARD Download
document-generic User guide
199
Description
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 amp (...)
Features
  • Stereo or Mono evaluation mode
  • USB input
  • IV sense evaluation mode
  • Interface to TAS2559YZEVM for speaker protection evaluation
  • Access to TAS2770 add-in PurePath Console 3
View details
EVALUATION BOARD Download
document-generic User guide
199
Description
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 (...)
Features
  • Stereo or Mono evaluation mode
  • USB input
  • Connect up to eight boards
  • Interface to TAS2559YZEVM for speaker protection evaluation
  • Access to TAS2770 add-in PurePath Console 3
View details

Software development

APPLICATION SOFTWARE & FRAMEWORK Download
PurePath™ Console graphical development suite for audio system design and development
PUREPATHCONSOLE — 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 Download
Android and other drivers for the TAS25XX and TAS27XX series of Class-D amplifiers
TAS2XXX-DRIVERS — 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.

Design tools & simulation

SIMULATION MODEL Download
SLAM324.ZIP (54 KB) - IBIS Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
View details

Reference designs

REFERENCE DESIGNS Download
Stereo Evaluation Module Reference Design of the Digital Input, Class-D, IV Sense Audio Amplifier
TIDA-01572 — 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

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

Ordering & quality

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  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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