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User’s Guide
May 2001 Mixed-Signal Products
SLOU022A
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IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infri
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Preface How to Use This Manual This document contains the following chapters: Chapter 1—Introduction Chapter 2—Quick Start Chapter 3—Details 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. TPA102 150-mW Stereo Audio Power Amplifier (literature number SLOS213) This is the data sheet for the TPA102 audio amplifi
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Running Title—Attribute Reference FCC Warning This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which
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Running Title—Attribute Reference Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.
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Running Title—Attribute Reference Figures 1–1 The TI TPA102 MSOP Audio Amplifier Evaluation Module . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 2–1 Quick Start Platform Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2–2 Quick Start Module Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 3–1 The TI Plug-N-Play Audio Amplifier Evaluation Platform . .
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Chapter 1 Introduction This chapter provides an overview of the Texas Instruments (TI) TPA102 MSOP audio amplifier evaluation module (SLOP125). It includes a list of EVM features, a brief illustrated description of the module, and a list of EVM specifications. Topic Page 1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Features 1.1 Features The TI TPA102 MSOP audio amplifier evaluation module and the TI plug-n-play audio amplifier evaluation platform include the following features: TPA102 MSOP stereo audio power amplifier evaluation module Dual channel, single-ended operation 150 mW output power into 8 Ω at 5 V 2.5-V to 5.5-V operation Very low distortion — THD+N is less than 0.01% at 1 kHz and less than 0.03% from 20 Hz to 20 kHz into 10-kΩ loads, less than 0.02% at 1 kHz and less than 0.4% from 20
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Description 1.2 Description The TPA102 MSOP audio power amplifier evaluation module is a complete, low-power stereo audio power amplifier for high-fidelity line-level output, headphone, and small speaker applications. It consists of the TI TPA102 150-mW stereo audio power amplifier IC in a very small MSOP package, along with a small number of other parts mounted on a circuit board that is approximately one and a quarter inches square (Figure 1–1). Figure 1–1. The TI TPA102 MSOP Audio Amplifier E
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1-4 Introduction
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Chapter 2 Quick Start The steps in this chapter can be followed to quickly prepare the TPA102 MSOP audio amplifier EVM for use. Using the TPA102 MSOP EVM 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 directly into exist
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+ J6 VDD VR2 J10 In/Out + Right – + Left – F2 J8 Left Right J7 J9 Out Out Out Out Spk(U2-U4) C3 C2 U6 JP8 POWER LED2 JP6 + + JP7 VDD SUPPLY U2 HP(U5) S3 U2-U4 HP Source U5 U3 U4 JP5 U5 IDD B1 Off On On TP1 S1 S2 Conditioning GND Off Pwr U1 LED1 VCC JP3 Batt D1 JP2 AC/DC D2 (J2) JP1 TEXAS VCC(J1) D3 INSTRUMENTS DC J3 J5 J4 1997 SOURCE Right Stereo Left J1 In In In J2 D4 VCC AC/DC In + In Precautions 2.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity an
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Quick Start List for Platform 2.2 Quick Start List for Platform Follow these steps when using the TPA102 MSOP EVM with the TI Plug-N-Play audio amplifier evaluation platform (see the platform user’s guide, SLOU011, for additional details). Numbered callouts for selected steps are shown in Figure 2–1 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 TPA102 MSOP module
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Quick Start List for Stand-Alone 2.3 Quick Start List for Stand-Alone Follow these steps to use the TPA102 MSOP EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TPA102 MSOP module header pins can be made via individual sockets, wire-wrapping, or soldering to the pins, either on the top or the bottom of the module circuit board. Numbered callouts for selected steps are shown in Figure 2–2 and details appear in Chapter 3. Figure 2–2. Quick Start Module
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Chapter 3 Details This chapter provides details on the TPA102 IC, the evaluation module, the steps in the Quick-Start List, additional application information, and a parts list for the TPA102 MSOP evaluation module. Topic Page 3.1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2 3.2 The TPA102 MSOP Audio Power Amplifier Evaluation Module . . . . 3–3 3.3 Using The TPA102 MSOP EVM With the Plug-N-Play Evaluation Platform
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+ J6 VDD VR2 J10 In/Out + Right – + Left – F2 Left J8 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 J4 J5 INSTRUMENTS SOURCE Right Stereo Left 1997 J1 In In In D4 J2 VCC In AC/DC + In Precautions 3.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity an
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The TPA102 MSOP Audio Power Amplifier Evaluation Module 3.2 The TPA102 MSOP Audio Power Amplifier Evaluation Module The TPA102 MSOP audio power amplifier evaluation module is powered by a TPA102 150-mW stereo audio amplifier IC. It includes a shutdown control signal input with onboard switch and can drive either line-level outputs, 32-Ω headphones, or 8-Ω speakers. The evaluation module can be used with the TI plug-n-play audio amplifier evaluation platform (Figure 3–1) or wired directly into ci
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The TPA102 MSOP Audio Power Amplifier Evaluation Module 3.2.1 TPA102 Audio Amplifier IC The TPA102 audio amplifier IC is a CMOS device intended primarily for high-performance line-level output, headphone driver, and small speaker applications. It is supplied in a very small surface-mount MSOP package designed to operate from low supply voltages (between approximately 2.5 V and 5.5 V) and deliver up to approximately 150 mW into 8-Ω speakers with low distortion. As a line-level driver, distortion
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The TPA102 MSOP Audio Power Amplifier Evaluation Module 3.2.2 Module Gain The TPA102 MSOP evaluation module has a set gain of 4 (inverting) for each channel. However, the gain can be adjusted to a maximum of approximately 10 (inverting) by changing the value of feedback resistors (R2 and R4, Figure 3–3). Use the following equation to determine the value of R F: R F Gain – R I The TPA102 amplifier IC, like most other amplifiers, exhibits its best distortion and noise performance at lower gain l
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Using the TPA102 MSOP EVM With the Plug-N-Play Evaluation Platform 3.3 Using the TPA102 MSOP EVM With the Plug-N-Play Evaluation Platform The TPA102 MSOP audio amplifier evaluation module is designed for use with the TI plug-n-play audio amplifier evaluation platform. It simply plugs into socket U5. The following paragraphs provide additional details for using the TPA102 EVM with the platform. 3.3.1 Installing and Removing EVM Boards TI plug-n-play evaluation modules use single-in-line header pi
