Stereo Evaluation Module Reference Design of the Digital Input, Class-D, IV Sense Audio Amplifier

(ACTIVE) TIDA-01572

Description & Features

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Key Document

Description

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 available in both WCSP and QFN packages. The design also includes two low-dropout fixed voltage regulators, the TL760M33 and TPS73618, which generate the necessary 3.3 V and 1.8 V system rails, respectively. The reference design’s versatile digital-input interface allows for a wide variety of input formats, while providing output data for voltage and current sense, supply voltage (VBAT) and temperature. The reference design also includes multiplexing to allow multiple input sources to the digital inputs. Additionally, the TAS2770 incorporates an automatic gain controller that can track VBAT to limit the output voltage, as desired. This function can help extend the battery life of battery-powered applications, such as laptops and tablets, and prevent system-level brownout. Inter-chip limiter alignment can be configured on multiple TAS2770 devices to coordinate limiter activity using a shared digital output. This will ensure that the entire system maintains comparable gain levels at all times to provide the best listening experience.

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 the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

What's Included

  • TIDA-01572 board

NOT INCLUDED: PurePath Console 3 add-in: download separately


  



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Bill of Materials (BOM)

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TI Devices (13)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CDCE913  Programmable 1-PLL VCXO Clock Synthesizer with 2.5-V or 3.3-V LVCMOS Outputs  Clock generators  Sample & Buy View Design Kits & Evaluation Modules
SN74AVC2T244  Dual-Bit Dual-Supply Bus Transceiver  Voltage level translation  Sample & Buy View Design Kits & Evaluation Modules
SN74AVC4T774  4-Bit Dual-Supply Bus Transceiver With Configurable Voltage-Level Shifting and 3-State Outputs  Voltage level translation  Sample & Buy View Design Kits & Evaluation Modules
SN74CB3Q3257  4-Channel, 2:1 Switch with 5V Tolerant I/Os  Switches & multiplexers  Sample & Buy View Design Kits & Evaluation Modules
SN74LV1T126  Single Power Supply, Single BUFFER GATE w/ 3-State Output (active high enable)  Voltage level translation  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC2G07  Dual Buffer/Driver with Open-Drain Output  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC2G66  2-Channel, 1:1 Analog Switch with Low On-State Resistance  Switches & multiplexers  Sample & Buy View Design Kits & Evaluation Modules
TAS2770  Digital Input Mono Class-D Audio Amplifier with Speaker IV Sense  Audio amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TCA9406  2-Bit Bidirectional 1-MHz I2C Bus and SMBus Voltage-Level Shifter  I2C  Sample & Buy View Design Kits & Evaluation Modules
TL760M33-Q1  Automotive Catalog Single Output LDO, 500mA, Fixed(3.3V), Load Dump Protection  Power management  Not Available View Design Kits & Evaluation Modules
TPS3897  Single-Channel Ultra-Small Adjustable Supervisory Circuit With Active-High Open-Drain Output  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS62085  3-A Step-Down Converter with DCS-Control and Hiccup Short Circuit Protection in 2x2 HotRod Package  Step-down (buck)  Sample & Buy View Design Kits & Evaluation Modules
TPS736  Single Output LDO, 400mA, Adj.(1.2 to 5.5V), Cap free, Low Noise, Reverse Current Protection  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CDCE913 Download Download
SN74AVC2T244 Download Download
Download Download
SN74AVC4T774 Download Download
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SN74CB3Q3257 Download Download
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SN74LV1T126 Download Download
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SN74LVC2G07 Download Download
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Download -
SN74LVC2G66 Download Download
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TAS2770 Download -
TCA9406 Download Download
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TL760M33-Q1 Download -
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TPS3897 Download Download
TPS62085 Download Download
TPS736 Download Download
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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

Datasheet (1)
Title Abstract Type Size (KB) Date Views
PDF 4055 01 Oct 2018
User guides (2)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 4039 20 Apr 2018 14
PDF 4050 15 Sep 2017 42
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 1650 20 Apr 2018 10
ZIP 2934 20 Apr 2018 14
PDF 2766 20 Apr 2018 10
PDF 469 20 Apr 2018 13
PDF 74 20 Apr 2018 10
PDF 633 20 Apr 2018 38
Related Tools & Software

Design Kits & Evaluation Modules  ( 1 )

Name Part Number Tool Type
Stereo Evaluation Module of the TAS2770 Digital Input, Class-D, IV Sense Audio Amplifier  TAS2770EVM-STEREO  Evaluation Modules & Boards 

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