Manuale d’uso / di manutenzione del prodotto TPA701 del fabbricante Texas Instruments
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November 1998 Mixed-Signal Products User ’ s Guide SLOU026A.
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 Chapter Title—Attribute Reference Contents 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Feature Highlights 1-2 .
Running Title—Attribute Reference vi Figures 1–1 The TI TP A701 MSOP Audio Amplifier Evaluation Module 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . 2–1 Quick Start Platform Map 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1 Introduction Introduction This chapter provides an overview of the T exas Instruments (TI ) TP A701 MSOP Audio Amplifier Evaluation Module (SLOP213). 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 A701 MSOP Audio Amplifier Evaluation Module and the TI Plug-N-Play Audio Amplifier Evaluation Platform include the following features: TP A701 Low-V oltage Audio Power Amplifier Evaluation Module Single channel, bridge-tied load (BTL) 3.
Description 1-3 Introduction 1.2 Description The TP A701 MSOP Audio Power Amplifier Evaluation Module is a complete, low-power single-channel audio power amplifier .
TP A701 EVM Specifications 1-4 Introduction 1.3 TP A701 EVM Specifications Supply voltage range, V DD 2.5 V to 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supply current, I DD 450 mA, max . . . . .
2-1 Quick Start Quick Start The steps in this chapter can be followed to quickly prepare the TP A701 MSOP audio amplifier EVM for use. Using the TP A701 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.
Precautions 2-2 Quick Start 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.
Quick Start List for Platform 2-3 Quick Start 2.2 Quick Start List for Platform Follow these steps when using the TP A701 MSOP EVM with the TI Plug-N-Play Audio Amplifier Evaluation Platform (see the platform user ’s guide, SLOU01 1, for additional details).
Quick Start List for Stand-Alone 2-4 Quick Start 2.3 Quick Start List for Stand-Alone Follow these steps to use the TP A701 MSOP EVM stand-alone or when connecting it into existing circuits or equipment.
3-1 Details Details This chapter provides details on the TP A701 IC, the evaluation module, the steps in the Quick-Start List, additional application information, and a parts list for the TP A701 MSOP evaluation module. T opic Page 3.1 Precautions 3–2 .
Precautions 3-2 Details 3.1 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.
The TP A701 MSOP Audio Power Amplifier Evaluation Module 3-3 Details 3.2 The TP A701 MSOP Audio Power Amplifier Evaluation Module The TP A701 MSOP Audio Power Amplifier Evaluation Module is powered by a TP A701 700-mW Low-Power Audio Amplifier IC and includes an on-board shutdown control signal switch.
The TP A701 MSOP Audio Power Amplifier Evaluation Module 3-4 Details 3.2.1 TP A701 Audio Amplifier IC The TP A701 audio amplifier IC is a CMOS device intended for bridge-tied load (BTL) operation in battery-powered applications.
The TP A701 MSOP Audio Power Amplifier Evaluation Module 3-5 Details The TP A701 amplifier IC, like most other amplifiers, exhibits its best distortion and noise performance at lower gain levels (see the TP A701 data sheet). Even so, the TP A701 at its highest gain setting has significantly less distortion than most low-cost speakers.
Using The TP A701 MSOP EVM With the Plug-N-Play Evaluation Platform 3-6 Details 3.3 Using The TP A701 MSOP EVM W ith the Plug-N-Play Evaluation Platform The TP A701 MSOP Audio Amplifier Evaluation Module was designed to be used with the TI Plug-N-Play Audio Amplifier Evaluation Platform.
Using The TP A701 MSOP EVM With the Plug-N-Play Evaluation Platform 3-7 Details 3.3.2 Signal Routing Signal flow on the platform is controlled by two signal routing switches, as shown in Figure 3 – 5.
Using The TP A701 MSOP EVM With the Plug-N-Play Evaluation Platform 3-8 Details Figure 3–6. Mute/Mode and Polarity Control J10 Headphone Jack R3 240 Ω R4 1 k Ω R5 1 k Ω JP8 JP6 U3, U4 Power Amplifiers Lo Hi Polarity Mode Mute V DD SPK (U2–U4) 3.
Power Requirements 3-9 Details 3.3.4 Power Requirements The TP A701 MSOP Audio Power Amplifier Evaluation Module can operate from any voltage between approximately 2.5 V and 5.5 V ; however , the TP A701 amplifier IC on the module is characterized for operation at 3.
Inputs and Outputs 3-10 Details The audio output lines from the power amplifiers are separate all the way to the edge of the platform (output jacks J7, J8, and J9)—the OUT– lines from the power amplifier sockets are not tied to each other or to platform ground.
Using The TP A701 MSOP EVM Stand-Alone 3-1 1 Details 3.4 Using The TP A701 MSOP EVM Stand-Alone Using the TP A701 MSOP Audio Power Amplifier Evaluation Module stand-alone is much the same as using it with the platform. The same 2.5-V to 5.5-V power supply range and the isolated OUT+ and OUT– lines for BTL operation requirement exists.
TP A701 MSOP Audio Power Amplifier Evaluation Module Parts List 3-12 Details 3.5 TP A701 MSOP Audio Power Amplifier Evaluation Module Parts List T able 3–1. TP A701 MSOP EVM Parts List Ref. Description Size EVM Qty . Manufacturer/ Part Number Digi-Key Number C3 Capacitor , 10 µ F , 6.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Texas Instruments TPA701 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Texas Instruments TPA701 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Texas Instruments TPA701 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Texas Instruments TPA701 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Texas Instruments TPA701, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Texas Instruments TPA701.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Texas Instruments TPA701. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Texas Instruments TPA701 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
