Texas Instruments SLOU121 - Manuals

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Manual Texas Instruments SLOU121

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Page 5 - Preface; Read This First; How to Use This Manual; This is an example of a caution statement.

Information About Cautions and Warnings v Preface Read This First How to Use This Manual This document contains the following chapters: - Chapter 1—Introduction - Chapter 2—Quick Start - Chapter 3—Details - Chapter 4—Reference Information About Cautions and Warnings This book may contain cautions an...

Page 6 - Related Documentation From Texas Instruments

Related Documentation From Texas Instruments vi Related Documentation From Texas Instruments - TI Plug-N-Play Audio Amplifier Evaluation Platform (literature numberSLOU011) provides detailed information on the evaluation platform andits use with TI audio evaluation modules - TPA6011A4 Stereo 2-W Aud...

Page 7 - Contents; Introduction

Contents vii Contents 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Feature Highlights 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 8 - Figures

Contents viii Figures 1–1 The TI TPA6011A4 Audio Amplifier Evaluation Module 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 Quick Start Platform Map 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2 Module Preparati...

Page 9 - Topic; Chapter 1

1-1 Introduction This chapter provides an overview of the Texas Instruments (TI) TPA6011A4audio amplifier evaluation module (SLOP389). It includes a list of EVMfeatures, a brief illustrated description of the module, and a list of EVMspecifications. Topic Page 1.1 Feature Highlights 1–2 . . . . . . ...

Page 11 - Description; Figure 1–1. The TI TPA6011A4 Audio Amplifier Evaluation Module

Description 1-3 Introduction 1.2 Description The TPA6011A4 stereo 2-W audio power amplifier evaluation module is acomplete, 2-W per channel stereo audio power amplifier with dc volumecontrol. It consists of the TI TPA6011A4 stereo 2-W audio power amplifier ICalong with a small number of other parts ...

Page 13 - Quick Start; Table 2–2. Typical TPA6011A4 EVM Jumper Settings; Chapter 2

2-1 Quick Start Quick Start The steps in this chapter can be followed to quickly prepare the TPA6011A4audio amplifier EVM for use. Using the TPA6011A4 with the TI plug-n-playaudio amplifier evaluation platform is a quick and easy way to connect power,signal and control inputs, and signal outputs to ...

Page 14 - Power Supply Input Polarity and Maximum Voltage; power; Figure 2–1. Quick Start Platform Map

Precautions 2-2 Quick Start 2.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external powerconnected to V CC power input connector J1, J2, and/or V DD power input connector J6 are correct. Overvoltage or reverse-polaritypower applied ...

Page 15 - Quick Start List for Platform; Platform Preparations; Table 2–3. Platform Jumper and Switch Settings for the TPA6011A4; Power Supply; Inputs and Outputs

Quick Start List for Platform 2-3 Quick Start 2.2 Quick Start List for Platform Follow these steps when using the TPA6011A4 EVM with the TI plug-n-playaudio amplifier evaluation platform (see the platform user’s guide, SLOU011,for additional details). Numbered callouts for selected steps are shown i...

Page 16 - Figure 2–2. Module Preparation; Power Up; Platform LED2 should light indicating the presence of V; modules installed on the platform should begin operation.

Quick Start List for Platform 2-4 Quick Start Figure 2–2. Module Preparation 13 11 12 16 17 18 19 14 Table 2–4. Typical TPA6011A4 EVM Jumper Settings EVM J1 J2 J3 J4 TPA6011A4 OFF OFF ON OFF Note: ON = Shunt installed, OFF = Open 11) To allow the module SE/BTL control input to switch the amplifier I...

Page 17 - Quick Start List for Stand-Alone; Figure 2–3. Quick Start Module Map; ) Ensure that all external power sources are set to OFF.

Quick Start List for Stand-Alone 2-5 Quick Start 17) Adjust the SE (headphone) volume by adjusting potentiometer R6. Turn- ing R6 in the clockwise direction decreases the voltage on the SEDIFF ter-minal and the SE gain increases. Turning R6 in the counter clockwise di-rection increases the SEDIFF vo...

Page 18 - Evaluation Module Preparations

Quick Start List for Stand-Alone 2-6 Quick Start can be used with a differential or single-ended audio source, but theheadphone and line have common positive inputs. 5) Select output mode: a) For BTL output, connect a speaker to the module OUT+ and OUT– pins of each channel, or b) For single-ended o...

Page 21 - Details; Chapter 3

3-1 Details Details This chapter provides details on the TPA6011A4 IC, the evaluation module,and the steps in the Quick-Start List, additional application information, and aparts list for the TPA6011A4 evaluation module. Topic Page 3.1 Precautions 3–2 . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 22 - Figure 3–1. The TI Plug-N-Play Audio Amplifier Evaluation Platform

Precautions 3-2 Details 3.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external powerconnected to V CC power input connector J1, J2, and/or V DD power input connector J6 are correct. Overvoltage or reverse-polaritypower applied to t...

Page 23 - The TPA6011A4 Audio Power Amplifier Evaluation Module; loads. The amplifier IC can be operated

The TPA6011A4 Audio Power Amplifier Evaluation Module 3-3 Details 3.2 The TPA6011A4 Audio Power Amplifier Evaluation Module The TPA6011A4 audio power amplifier evaluation module is powered by aTPA6011A4 stereo power amplifier capable of delivering greater than 2 W ofcontinuous power per channel into...

Page 25 - Inputs and Gain; in the table scale linearly. If V; = 4 V, multiply all the voltages in the table by

The TPA6011A4 Audio Power Amplifier Evaluation Module 3-5 Details In the single-ended mode, the headphone inputs are automatically selectedand the speaker load is connected between the OUT+ terminal, through anoutput coupling capacitor, to system ground. For more information, see theTPA6011A4 amplif...

Page 26 - = 5 V. The values must be scaled for other V; Figure 3–5. Block Diagram of SE Volume Control

The TPA6011A4 Audio Power Amplifier Evaluation Module 3-6 Details SEDIFF and SEMAX pins control the singe-ended gain proportional to the gainset by the voltage on the VOLUME pin. When SEDIFF = 0 V, the differencebetween the BTL gain and the SE gain is 6 dB. The voltage on the SEDIFFterminal is subtr...

Page 28 - Differential Input

The TPA6011A4 Audio Power Amplifier Evaluation Module 3-8 Details Table 3–2. DC Volume Control (SE Mode, V DD = 5 V) SE_VOLUME(V) = VOLUME(V) – SEDIFF(V) or SEMAX(V) GAIN OF AMPLIFIER FROM (V) TO (V) GAIN OF AMPLIFIER (dB) 0.00 0.26 –85 0.33 0.37 –46 0.44 0.48 –44 0.56 0.59 –42 0.67 0.70 –40 0.78 0....

Page 29 - Depop Circuitry

The TPA6011A4 Audio Power Amplifier Evaluation Module 3-9 Details 3.2.5 Depop Circuitry The TPA6011A4 amplifier IC contains internal circuitry to minimize the varioustransients that might appear at the output during the transition from power offor shutdown to normal operation, or when transitioning ...

Page 30 - Using the TPA6011A4 EVM With the Plug-N-Play Evaluation Platform; Installing and Removing EVM Boards; EVM Insertion; TPA6011A4 Module Jumper Settings and Switches

Using the TPA6011A4 EVM With the Plug-N-Play Evaluation Platform 3-10 Details 3.3 Using the TPA6011A4 EVM With the Plug-N-Play Evaluation Platform The TPA6011A4 audio amplifier evaluation module was designed to be usedwith the TI plug-n-play audio amplifier evaluation platform. It simply plugs intos...

Page 32 - , so that when J2 is ON, the IC is held in the HP input mode; and the amplifier switches; Signal Routing; Figure 3–7. Platform Signal Routing and Outputs

Using the TPA6011A4 EVM With the Plug-N-Play Evaluation Platform 3-12 Details 3.3.2.3 J2 — Input Mode Jumper To force the module amplifier IC to use the HP input regardless of the modulecontrol input state, set jumper J2 to ON. Jumper J2 connects the HP/LINE input mode control pin on the amplifier I...

Page 34 - , the module operates; resistor (R3) depending on whether a plug is inserted in J10; Figure 3–8. Mute/Mode and Polarity Control

Using the TPA6011A4 EVM With the Plug-N-Play Evaluation Platform 3-14 Details output mode. When the mode control input is tied to GND, the module operatesin the BTL output mode. When this input is tied to V DD , the module operates in the single-ended output mode. In the typical application, output ...

Page 35 - Power Requirements

Power Requirements 3-15 Details - When JP6 is set to mode, use the following JP8 settings for theTPA6011A4: J To switch the TPA6011A4 amplifier module to the single-ended outputmode when a plug is inserted into the headphone jack, jumper JP8 toHi (this is the typical setting). J To switch the TPA601...

Page 36 - Inputs; Figure 3–9. Typical Headphone Plug

Inputs and Outputs 3-16 Details 3.3.6 Inputs and Outputs The TI plug-n-play audio amplifier evaluation platform is equipped with severalstandard conectors for audio inputs and outputs. 3.3.6.1 Inputs In most cases, audio signals enter the platform through either a pair of RCAphono jacks (J3 and J5) ...

Page 37 - Using the TPA6011A4 EVM Stand-Alone; TPA6011A4 EVM Connected for BTL Output; Figure 3–10. TPA6011A4 EVM Connected for Stereo BTL Output

Using the TPA6011A4 EVM Stand-Alone 3-17 Details 3.4 Using the TPA6011A4 EVM Stand-Alone Using the TPA6011A4 audio power amplifier evaluation module stand-aloneis much the same as using it with the platform. The same 4.5-V to 5.5-V powersupply range and the isolated OUT+ and OUT– lines for BTL opera...

Page 38 - TPA6011A4 EVM Connected for Single-Ended Output

Using the TPA6011A4 EVM Stand-Alone 3-18 Details 3.4.2 TPA6011A4 EVM Connected for Single-Ended Output Figure 3–11. TPA6011A4 EVM Connected for Stereo Single-Ended Output + + Audio Input (Right) Audio Input (Left) 5 V 33 µ F – 1000 µ F 33 µ F – 1000 µ F Table 3–4. Typical TPA6011A4 EVM Jumper Settin...

Page 39 - Reference; Chapter 4

4-1 Reference Reference The TPA6011A4 EVM board layers, board schematic, and parts list are pres-ented in this chapter. Topic Page 4.1 TPA6011A4 EVM Layers and Board Schematic 4-2 . . . . . . . . . . . . . . . . . . 4.2 TPA6011A4 EVM Parts List 4-4 . . . . . . . . . . . . . . . . . . . . . . . . . ....