20W Digital Input Smart Amp with I/V Sense for Speaker Protection and 4.5-18V Supply Voltage Range
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
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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.
To request access to PurePath™ Console 3 and other design resources: Request TAS2770
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
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
Description
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
Description
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
PurePath Console’s (...)
Design tools & simulation
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
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
- 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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