20-W, digital input, 4.5- to 18-V smart amp with I/V sense for speaker protection
Product details
Parameters
Package | Pins | Size
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
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.
To request access to PurePath™ Console 3 and other design resources: Request TAS2770
Technical documentation
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View all 22 Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
TAS2770EVM
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 (...)
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
TAS2770EVM-STEREO
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
TAS2770YFFEVM
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
Software 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 (...)
PurePath Console’s (...)
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
SLAM324.ZIP (54 KB) - IBIS Model
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
- (...)
Reference designs
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 (...)
Design files
-
download TIDA-01572 BOM.pdf (74KB) -
download TIDA-01572 Assembly Drawing.pdf (469KB) -
download TIDA-01572 PCB.pdf (2766KB) -
download TIDA-01572 CAD Files.zip (2934KB) -
download TIDA-01572 Gerber.zip (1650KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| DSBGA (YFF) | 30 | View options |
| VQFN-HR (RJQ) | 26 | View options |
Ordering & quality
Information included:
- RoHS
- REACH
- 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.
Support & training
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