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1

Introduction

1.1

Description

User's Guide

SLOU221 – June 2008

TPA3121D2 Audio Power Amplifier Evaluation Module

Contents

1

Introduction

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1

1.1

Description

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1

1.2

TPA3121D2 EVM Specifications

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3

2

Operation

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3

2.1

Quick Start List for Stand-Alone Operation

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3

3

Reference

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4

3.1

TPA3121D2 EVM Schematic

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4

3.2

TPA3121D2 EVM PCB Layers

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5

3.3

TPA3121D2EVM Bill of Materials

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7

List of Figures

1

The TI TPA3121D2 Audio Power Amplifier EVM – Top View

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2

2

The TI TPA3121D2 Audio Power Amplifier EVM – Bottom View

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2

3

TPA3121D2 EVM Schematic

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4

4

TPA3121D2 EVM – Top Side Layout

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5

5

TPA3121D2 EVM – Bottom Side Layout

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6

List of Tables

1

Gain Settings

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3

The TPA3121D2 evaluation module consists of a single 20W, class-D, stereo audio power amplifier
complete with a small number of external components mounted on a circuit board that can be used to
directly drive speakers with an external analog audio source as the input.

SLOU221 – June 2008

TPA3121D2 Audio Power Amplifier Evaluation Module

1

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Summary of Contents for TPA3121D2

Page 1: ...1D2 Audio Power Amplifier EVM Top View 2 2 The TI TPA3121D2 Audio Power Amplifier EVM Bottom View 2 3 TPA3121D2 EVM Schematic 4 4 TPA3121D2 EVM Top Side Layout 5 5 TPA3121D2 EVM Bottom Side Layout 6 List of Tables 1 Gain Settings 3 The TPA3121D2 evaluation module consists of a single 20W class D stereo audio power amplifier complete with a small number of external components mounted on a circuit b...

Page 2: ... Figure 1 The TI TPA3121D2 Audio Power Amplifier EVM Top View Figure 2 The TI TPA3121D2 Audio Power Amplifier EVM Bottom View TPA3121D2 Audio Power Amplifier Evaluation Module 2 SLOU221 June 2008 Submit Documentation Feedback ...

Page 3: ...l 0 8V shuts down the amplifier a HIGH 2V on the device terminal places the amplifier in the active state Holding down switch SW1 will place the amplifier in the SHUTDOWN state Releasing SW1 will return the amplifier to the active state This terminal is Vcc compliant 2 MUTE This terminal is active HIGH A HIGH 2V on this terminal will immediately terminate audio playback through the speakers a LOW ...

Page 4: ... GND C16 0 22uF C16 0 22uF R1 10K R1 10K C15 0 22uF C15 0 22uF TP7 RIGHT_OUT TP7 RIGHT_OUT J5 GND J5 GND J1 GAIN0 J1 GAIN0 1 2 C17 470uF C17 470uF 1 2 C3 1 0uF C3 1 0uF J3 LOUT J3 LOUT TP11 LGND TP11 LGND TP1 LEFT_IN TP1 LEFT_IN C19 0 22uF C19 0 22uF R2 10K R2 10K C2 470uF C2 470uF 1 2 J6 ROUT J6 ROUT R10 0 R10 0 C13 10uF C13 10uF C4 1 0uF C4 1 0uF J2 GAIN1 J2 GAIN1 1 2 C7 0 1uF C7 0 1uF C20 0 22u...

Page 5: ...3 2 TPA3121D2 EVM PCB Layers www ti com Reference Figure 4 TPA3121D2 EVM Top Side Layout SLOU221 June 2008 TPA3121D2 Audio Power Amplifier Evaluation Module 5 Submit Documentation Feedback ...

Page 6: ...Reference www ti com Figure 5 TPA3121D2 EVM Bottom Side Layout TPA3121D2 Audio Power Amplifier Evaluation Module 6 SLOU221 June 2008 Submit Documentation Feedback ...

Page 7: ...L C19 C20 Capacitor metal poly 0 22 µF 63V Radial 2 Epcos Inc B32559C224K000 L1 L2 Inductor 33 µH radial lead ferrite material shielded Radial 2 Toko A7503AY 330M R1 R4 Resistor chip 10 kΩ 1 16 W 5 0603 4 Panasonic ERA V15J103V R6 R7 Resistor chip 4 7 kΩ 1 10 W 5 603 2 Panasonic ERJ 3GEYJ472V R9 R10 Resistor chip 0 Ω 1 10 W 5 603 2 Panasonic ERJ 3GEY0R00V R11 Resistor chip 220 Ω 1 4 W 1 1206 1 Pan...

Page 8: ...the product This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application engineer or visit www ti com esh No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine process or combination in which such TI pro...

Page 9: ...usiness practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all neces...

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