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)
- 9.1-W at 1 % THD+N (8 Ω, 12.6 V)
- 7.1-W at 1 % THD+N (4 Ω, 8.4 V)
- 4-W at 1 % THD+N (8 Ω, 8.4 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
All trademarks are the property of their respective owners.
Description
The TAS2770 is a mono, digital input Class-D audio amplifier optimized for efficiently driving high peak power into small loudspeakers. The Class-D amplifier is capable of delivering 15.4 W of peak power into a 4-Ω load while sustaining 11.6 W continuously with less than 0.03 % THD+N at a battery voltage of 12.6 V.
Integrated speaker voltage and current sense provides for real time monitoring of loudspeaker behavior. A battery tracking peak voltage limiter with brown out prevention optimizes amplifier headroom over the entire charge cycle of 2S or 3S battery systems.
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
= Featured
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 (...)
Design tools & simulation
SLAM324.ZIP (54 KB) - IBIS Model
COEFFICIENT-CALC — COEFFICIENT-CALC (TIBQ) calculates the coefficients for the digital filter biquad transfer function implemented in TI audio codecs. The characteristics of the digital filter are adjusted by selecting a filter type and moving a control point within a window that shows the transfer function gain and (...)
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
Support & training
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