Manual de instrucciones de Texas Instruments TPA2008D2

Manual de instrucciones del aparato Texas Instruments TPA2008D2

Aparato: Texas Instruments TPA2008D2
Categoría: Amplificador estéreo
Fabricante: Texas Instruments
Tamaño: 0.23 MB
Fecha de añadido: 2/14/2014
Número de páginas: 26
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Resúmenes de contenidos
Resumen del contenido incluido en la página 1




 
   

   
User’s Guide
July 2003 Mixed-Signal Products
SLOU116

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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the t

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EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product

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EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the supply voltage range specified in the user’s guide. The supply voltage range should be 4.5 V to 5.5 V. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power. Applying loads outside of the specified output range may result in unintended operati

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Preface How to Use This Manual This document contains the following chapters:  Chapter 1—Introduction  Chapter 2—Operation  Chapter 3—Reference Information About Cautions and Warnings This book may contain cautions and warnings. This is an example of a caution statement. A caution statement describes a situation that could potentially damage your software or equipment. This is an example of a warning statement. A warning statement describes a situation that could potentially cause harm to you

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Running Title—Attribute Reference Related Documentation From Texas Instruments  TI Plug-N-Play Audio Amplifier Evaluation Platform (literature number SLOU011) provides detailed information on the evaluation platform and its use with TI audio evaluation modules.  TPA2008D2 3-W STEREO CLASS-D AUDIO POWER AMPLIFIER (literature number SLOS413) This is the data sheet for the TPA2008D2 audio amplifier integrated circuit. FCC Warning This equipment is intended for use in a laboratory test environment

Resumen del contenido incluido en la página 7

Running Title—Attribute Reference Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.3 TPA2

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Running Title—Attribute Reference Figures 1–1 The TI TPA2008D2 Audio Amplifier EVM Without Output Filter — Top View . . . . . . . . . . . 1-3 1–2 The TI TPA2008D2 Audio Amplifier EVM Without Output Filter — Bottom View . . . . . . . . 1-3 2–1 Quick Start Platform Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2–2 Module Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Chapter 1 Introduction This chapter provides an overview of the Texas Instruments (TI) TPA2008D2 stereo filter-free class-D audio amplifier evaluation module (SLOP392). It includes a list of EVM features, a brief illustrated description of the module, and a list of EVM specifications. Topic Page 1.1 Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Resumen del contenido incluido en la página 10

Feature Highlights 1.1 Feature Highlights The TI TPA2008D2 audio amplifier evaluation module and the TI plug-n-play audio amplifier evaluation platform include the following features:  TPA2008D2 Stereo 3-W Filter-Free Class-D Audio Power Amplifier Evaluation Module  Class-D without output filter  Internal depop circuitry to minimize transients in outputs  High efficiency  Low distortion  Low supply current (7 mA)  3 W per channel output power into 3 Ω at 5 V  Low current consumption in s

Resumen del contenido incluido en la página 11

Description 1.2 Description The TPA2008D2 filter-free class-D stereo audio power amplifier evaluation module is a complete, 3-W per channel class-D stereo audio power amplifier that can operate without an output filter. It consists of the TI TPA2008D2 class-D stereo 3-W audio power amplifier IC along with a small number of other parts mounted on a circuit board that measures approximately 2-1/4 inches by 1-1/2 inches. Figure 1–1. The TI TPA2008D2 Audio Amplifier EVM Without Output Filter—Top Vie

Resumen del contenido incluido en la página 12

TPA2008D2 EVM Specifications The platform has room for a single TPA2008D2 evaluation module and is a convenient vehicle for demonstrating TI’s audio power amplifier and related evaluation modules. The EVMs simply plug into the platform, which automatically provides power to the modules, interconnects them correctly, and connects them to a versatile array of standard audio input and output jacks and connectors. Easy-to-use configuration controls allow the platform and EVMs to quickly model many p

Resumen del contenido incluido en la página 13

Chapter 2 Operation The steps in this chapter can be followed to quickly prepare the TPA2008D2 stereo filter-free class-D audio amplifier EVM for use. Using the TPA2008D2 with the TI plug-n-play audio amplifier evaluation platform is a quick and easy way to connect power, signal and control inputs, and signal outputs to the EVM using standard connectors. However, the audio amplifier evaluation module can be used stand-alone by making connections directly to the module pins, and can be wired di

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+ VR2 J6 VDD J10 In/Out F2 Right Left + – – + J8 Left Right J9 J7 Out Out Out Out Spk(U2-U4) C3 C2 JP8 U6 JP6 + + LED2 POWER VDD JP7 U2 HP(U5) SUPPLY S3 U2-U4 HP Source U5 U3 U4 JP5 U5 IDD B1 Off On On S1 TP1 S2 Conditioning GND Off Pwr U1 LED1 VCC JP3 Batt D1 JP2 AC/DC D2 (J2) JP1 VCC(J1) D3 TEXAS DC J3 J5 J4 INSTRUMENTS SOURCE Right Stereo Left 1997 In In In J1 D4 J2 VCC AC/DC In In + Precautions 2.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity an

Resumen del contenido incluido en la página 15

Quick Start List for Platform 2.2 Quick Start List for Platform Follow these steps when using the TPA2008D2 EVM with the TI plug-n-play audio amplifier evaluation platform (see the platform user’s guide, literature number SLOU011, for additional details). Numbered callouts for selected steps are shown in Figure 2–2, and details appear in Chapter 3.  Platform preparations 1) Ensure that all external power sources are set to OFF and that the platform power switch S1 is set to OFF. 2) Install a TP

Resumen del contenido incluido en la página 16

Quick Start List for Stand-Alone  Evaluation Module Preparations 11) Use potentiometer R3 to set the volume. Turning R3 in the clockwise direction will increase the volume. See Table 3–1 for voltage levels on the VOLUME pin and corresponding gain settings. 12) If using an external DAC, adjust R3 to the center position by placing a DMM across the VOLUME pin and ground and adjusting the potentiometer until 25 kΩ is measured across the leads. Apply the external source to the VOLUME pin. Figure 2–2

Resumen del contenido incluido en la página 17

Quick Start List for Stand-Alone Figure 2–3. Quick Start for Stand-Alone 6 7 Right 5 4 Audio Input (Right) External Shut Down Control (active low) 4 8 Audio Input (Left) Left 5 5 V 2  Power supply 1) Ensure that all external power sources are set to OFF. 2) Connect an external regulated power supply set to 5 V to the module VDD and GND pins taking care to observe marked polarity.  Inputs and outputs 3) Ensure that audio signal source level adjustments are set to minimum. 4) Connect the right (

Resumen del contenido incluido en la página 18

Quick Start List for Stand-Alone The EVM should begin operation. 10) Adjust the signal source level and potentiometer R3 as needed. 2-6 Operation

Resumen del contenido incluido en la página 19

Power Requirements 2.4 Power Requirements The TPA2008D2 audio power amplifier evaluation module can operate from any voltage between approximately 4.5 V and 5.5 V; however, the TPA2008D2 amplifier IC on the module is characterized for operation at 5 V. For best performance (highest output power with lowest distortion), the module should be operated at 5 V. The TI plug-n-play audio amplifier evaluation platform with a voltage regulator EVM installed on it can provide a regulated V supply from a w

Resumen del contenido incluido en la página 20

2-8 Operation


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