Texas InstrumentsメーカーTPA0253の使用説明書/サービス説明書
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December 2000 Mixed-Signal Products User ’ s Guide SLOU100.
IMPORT ANT NOTICE T exas 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.
iii Chapter Title—Attribute Reference Preface Related Documentation From T exas Instruments TI Plug-N-Play Audio Amplifier Evaluation Platform (literature number SLOU01 1) provides detailed information on the evaluation platform and its use with TI audio evaluation modules.
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Running Title—Attribute Reference v Contents Contents 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Feature Highlights 1-2 . . . . . .
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1-1 Introduction Introduction This chapter provides an overview of the T exas Instruments (TI) TP A0253 audio amplifier evaluation module (SLOP270). It includes a list of EVM features, a brief description of the module illustrated with a pictorial diagram, and a list of EVM specifications.
Feature Highlights 1-2 Introduction 1.1 Feature Highlights The TI TP A0253 audio amplifier evaluation module and the TI plug-n-play audio amplifier evaluation platform include the following features: .
Description 1-3 Introduction 1.2 Description The TP A0253 audio power amplifier evaluation module is a complete 1-watt mono audio power amplifier with stereo headphone drive.
1-4 Introduction.
2-1 Operation Quick start lists in this chapter contain steps that can be followed to quickly prepare the TI plug-n-play audio amplifier evaluation platform for use with the TP A0253 audio amplifier EVM, or to connect the TP A0253 audio amplifier EVM for stand-alone operation.
2-2 2.1 Precautions Power Supply Input Polarity and Maximum V oltage Always ensure that the polarity and voltage of the external power connected to V CC power input connector J1, J2, and/or V DD power input connector J6 are correct.
2-3 2.2 Quick Start List for Platform Follow these steps when using the TP A0253 EVM with the TI plug-n-play audio amplifier evaluation platform (see the platform user ’s guide, SLOU01 1, for additional details). T able 2–1 shows typical platform jumper and switch settings and numbered callouts for selected steps appear in Figure 2–1.
2-4 2.3 Quick Start List for Stand-Alone Follow these steps to use the TP A0253 EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TP A0253 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.
2-5 2.4 Stand-Alone Connection Diagrams The power supply range is 2.5 V to 5.5 V and isolated RO/MO+ and LO/MO– lines for BTL operation are required. Note that the source of any shutdown signal applied to the EVM SHUTDOWN pin must be able to sink the current flowing through the pullup resistor on the module (100 k Ω ) when the pin is held low .
2-6 2.4.2 TP A0253 EVM Connected for Single-Ended Stereo Headphone Output Figure 2–4 shows a TP A0253 EVM connected for single-ended stereo headphone operation.
2-7 2.5 Reference This section includes the TP A0253 EVM schematic, the EVM parts list, and the module PCB layers. 2.5.1 EVM Schematic Figure 2–5 shows the TP A0253 EVM schematic.
2-8 2.5.2 EVM Parts List T able 2–2 is the TP A0253 EVM parts list. T able 2–2. TP A0253 EVM Parts List Ref. Description Size EVM Qty . Manufacturer/ Part Number V endor Number C1, C4 Capacitor , 1 µ F @ 16 V , +80%/–20%, nonpolarized 1206 2 Murata GRM42-6Y5V105Z16BL Arrow GRM426Y5V105Z 016 C2, C5, C6 Capacitor , 0.
2-9 2.5.3 Module PCB Layers The following illustrations depict the TP A0253 EVM PCB layers and silkscreen. These drawings are not to scale. Gerber plots can be obtained from any TI Sales Office.
2-10 Figure 2–8. TP A0253 EVM Bottom Layer.
デバイスTexas Instruments TPA0253の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Texas Instruments TPA0253をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはTexas Instruments TPA0253の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Texas Instruments TPA0253の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Texas Instruments TPA0253で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Texas Instruments TPA0253を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はTexas Instruments TPA0253の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Texas Instruments TPA0253に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちTexas Instruments TPA0253デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
