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User’s Guide
November 1998 Mixed-Signal Products
SLOU026A
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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 acknowledgement, including those pertaining to warranty, patent infr
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Preface 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. TPA701 700-mW LOW-VOLTAGE AUDIO POWER AMPLIFIER (literature number SLOS229) This is the data sheet for the TPA701 audio amplifier integrated circuit. FCC Warning This equipment is intended for use in a laboratory test environment only. It generates, uses, and c
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iv
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Running Title—Attribute Reference Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.3 TPA7
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Running Title—Attribute Reference Figures 1–1 The TI TPA701 MSOP Audio Amplifier Evaluation Module . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 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) TPA701 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. Topic Page 1.1 Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Feature Highlights 1.1 Feature Highlights The TI TPA701 MSOP Audio Amplifier Evaluation Module and the TI Plug-N-Play Audio Amplifier Evaluation Platform include the following features: TPA701 Low-Voltage Audio Power Amplifier Evaluation Module Single channel, bridge-tied load (BTL) 3.3-V and 5-V operation 700-mW output power into 8 Ω at 5 V, BTL Ultra-low current consumption in shutdown mode Internal thermal and short-circuit protection Module gain is set at –4 V/V in BTL mode, –2
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Description 1.2 Description The TPA701 MSOP Audio Power Amplifier Evaluation Module is a complete, low-power single-channel audio power amplifier. It consists of the TI TPA701 700-mW Low-Voltage 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 TPA701 Audio Amplifier Evaluation Module Vdd GND Shutdown + C3 S1 R1 † U1 C4 C1 OUT– GND R2 OU
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TPA701 EVM Specifications 1.3 TPA701 EVM Specifications Supply voltage range, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 V to 5.5 V DD Supply current, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 mA, max DD Continuous output power, P :8-Ω BTL, V =5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700 mW O DD Audio input voltage, V . . . . . . . . . . . . . . . .
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Chapter 2 Quick Start The steps in this chapter can be followed to quickly prepare the TPA701 MSOP audio amplifier EVM for use. Using the TPA701 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 it can be wired directly into e
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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 and
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Quick Start List for Platform 2.2 Quick Start List for Platform Follow these steps when using the TPA701 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 TPA701 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 TPA701 MSOP EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TPA701 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 TPA701 IC, the evaluation module, the steps in the Quick-Start List, additional application information, and a parts list for the TPA701 MSOP evaluation module. Topic Page 3.1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2 3.2 The TPA701 MSOP Audio Power Amplifier Evaluation Module . . 3–3 3.3 Using The TPA701 MSOP EVM With The Plug-N-Play Evaluation Platform . . . . . . . . . . . .
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+ J6 VDD VR2 J10 In/Out +– Right +– Left F2 J8 Left Right J9 J7 Out Out Out Out Spk(U2-U4) C3 C2 U6 JP8 LED2 JP6 POWER + + JP7 VDD SUPPLY U2 HP(U5) S3 U2-U4 HP Source U5 U3 U4 JP5 U5 IDD B1 On Off 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 D4 J2 VCC AC/DC In + In Precautions 3.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and
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The TPA701 MSOP Audio Power Amplifier Evaluation Module 3.2 The TPA701 MSOP Audio Power Amplifier Evaluation Module The TPA701 MSOP Audio Power Amplifier Evaluation Module is powered by a TPA701 700-mW Low-Power Audio Amplifier IC and includes an on-board shutdown control signal switch. The module can be used with the TI Plug-N-Play Audio Amplifier Evaluation Platform (Figure 3–1) or wired directly into circuits or equipment. The module has single in-line header connector pins mounted to the und
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The TPA701 MSOP Audio Power Amplifier Evaluation Module 3.2.1 TPA701 Audio Amplifier IC The TPA701 audio amplifier IC is a CMOS device intended for bridge-tied load (BTL) operation in battery-powered applications. It is supplied in a very small surface-mount package and has been designed to operate from low supply voltages (between approximately 2.5 V and 5.5 V) and deliver up to approximately 700 mW into an 8-Ω, BTL (Figure 3–4). Typical applications include portable phones, toys, games, and si
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The TPA701 MSOP Audio Power Amplifier Evaluation Module The TPA701 amplifier IC, like most other amplifiers, exhibits its best distortion and noise performance at lower gain levels (see the TPA701 data sheet). Even so, the TPA701 at its highest gain setting has significantly less distortion than most low-cost speakers. Gain versus total harmonic distortion (THD) should be considered in each application. Both the module input signal level and the TPA701 MSOP module gain should be adjusted to obta
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Using The TPA701 MSOP EVM With the Plug-N-Play Evaluation Platform 3.3 Using The TPA701 MSOP EVM With the Plug-N-Play Evaluation Platform The TPA701 MSOP Audio Amplifier Evaluation Module was designed to be used with the TI Plug-N-Play Audio Amplifier Evaluation Platform. It simply plugs into socket U3 or U4. The following paragraphs provide additional details for using the TPA701 MSOP EVM with the platform. 3.3.1 Installing and Removing EVM Boards TI Plug-N-Play evaluation modules use single-in
