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User’s Guide
2001 Mixed-Signal Products
SLOU014A
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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 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. TPA301 350-mW Low-Voltage Audio Power Amplifier (literature number SLOS208) This is the data sheet for the TPA301 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 TPA3
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Running Title—Attribute Reference Figures 1–1 The TI TPA301 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 Platfo
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Chapter 1 Introduction This chapter provides an overview of the Texas Instruments (TI) TPA301 audio amplifier evaluation module (SLOP115). 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 TPA301 audio amplifier evaluation module and the TI plug-n-play audio amplifier evaluation platform include the following features: TPA301 Low-Voltage Audio Power Amplifier Evaluation Module Single channel, bridge-tied load (BTL) or single-ended operation 3.3-V and 5-V operation 350 mW output power into 8 Ω at 5 V, BTL Ultra-low current consumption in shutdown/mute mode Internal thermal and short-circuit protection Module gain adjust
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Description 1.2 Description The TPA301 audio power amplifier evaluation module is a complete, low-pow- er single-channel audio power amplifier. It consists of the TI TPA301 350-mW low-voltage audio power amplifier IC 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 TPA301 Audio Amplifier Evaluation Module +5 V GND Shutdown R5 C6 C3 C5 S1 DL R1 OUT– C2 GND U1 R2 C4 OUT+ Lit.# R3 C1 SLOP 115 –
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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 TPA301 audio amplifier EVM for use. While using the TPA301 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, the audio amplifier evaluation module can be used stand-alone by making connections directly to the module pins, and can be wired directly into existing circuits or e
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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 J5 J4 INSTRUMENTS SOURCE Right Stereo Left 1997 J1 In In In D4 J2 VCC In AC/DC + 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 Use the following steps when using the TPA301 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 TPA301 module in pla
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Quick Start List for Stand-Alone 2.3 Quick Start List for Stand-Alone Use the following steps to use the TPA301 EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TPA301 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 Map 2
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Chapter 3 Details This chapter provides details on the TPA301 IC, the evaluation module, and the steps in the Quick-Start List, additional application information, and a parts list for the TPA301 evaluation module. Topic Page 3.1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2 3.2 The TPA301 Audio Power Amplifier Evaluation Module . . . . . . . . . . . 3–3 3.3 Using The TPA301 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 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 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 TPA301 Audio Power Amplifier Evaluation Module 3.2 The TPA301 Audio Power Amplifier Evaluation Module The TPA301 audio power amplifier evaluation module is powered by a TPA301 350-mW low-power audio amplifier IC and includes onboard gain adjustment, a shutdown control signal input with onboard switch, and can be operated in either the BTL or single-ended output mode. The module can be used with the TI plug-n-play audio amplifier evaluation platform (Figure 3–1) or wired directly into circuit
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The TPA301 Audio Power Amplifier Evaluation Module 3.2.1 TPA301 Audio Amplifier IC The TPA301 audio amplifier IC is a CMOS device intended primarily 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 350 mW into an 8-Ω , BTL (Figure 3– 4). Typical applications in- clude portable phones, toys, gam
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The TPA301 Audio Power Amplifier Evaluation Module In the single-ended mode, the amplifier inside the TPA301 IC that drives the OUT– line still operates and dissipates power even though it is not being used to help drive the load. A better choice for low-power applications that operate in the single-ended mode from time to time might be the TPA311 (SLOP116), which shuts down the unused internal amplifier for reduced power consump- tion when operating in the single-ended mode. 3.2.4 Module Gain T
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Using The TPA301 EVM With the Plug-N-Play Evaluation Platform 3.3 Using The TPA301 EVM With the Plug-N-Play Evaluation Platform The TPA301 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 TPA301 EVM with the platform. 3.3.1 Installing and Removing EVM Boards TI plug-n-play evaluation modules use single-in-line header pins in
