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User’s Guide
August 1998 Mixed-Signal Products
SLOU015
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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. TPA0103 3-CHANNEL AUDIO POWER AMPLIFIER STEREO SINGLE-ENDED 500-mW AND MONO BTL 1.75-W (literature number SLOS167) This is the data sheet for the TPA0103 audio amplifier integrated circuit. FCC Warning This equipment is intended for use in a laboratory test env
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iv
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Running Title—Attribute Reference Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 1.3 TPA0
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Running Title—Attribute Reference Figures 1–1 The TI TPA0103 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 Platfor
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Chapter 1 Introduction This chapter provides an overview of the Texas Instruments (TI) TPA0103 Audio Amplifier Evaluation Module (SLOP103). 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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1-2 Introduction
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Feature Highlights 1.1 Feature Highlights The TI TPA0103 Audio Amplifier Evaluation Module and the TI Plug-N-Play Audio Amplifier Evaluation Platform include the following features: TPA0103 Low-Voltage Audio Power Amplifier Evaluation Module 535-mW single-ended into 4 Ω at 5 V L/R channels 1.75-W bridge-tied load (BTL) into 4 Ω at 5 V center channel 3.3-V and 5-V operation Low distortion (< 0.25% THD+N at full power) Ultra-low current consumption in full shutdown mode Two sets of s
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Description 1.2 Description The TPA0103 Audio Power Amplifier Evaluation Module is a complete, low-power three-channel audio power amplifier. It consists of the TI TPA0103 3-Channel Audio Power Amplifier IC along with a small number of other parts mounted on a circuit board that measures approximately 2 inches by 1 inches (Figure 1–1). Figure 1–1. The TI TPA0103 Audio Amplifier Evaluation Module R10 R11 C7 VDD GND RHP ROUT+ + GND GND C11 R8 R7 S5 C6 COUT– RIN S3 R14 HP/L* GND R9 S4 C9 C10 MO
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Chapter 2 Quick Start The steps in this chapter can be followed to quickly prepare the TPA0103 audio amplifier EVM for use. Using the TPA0103 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 also be used stand-alone by making connections directly to the module pins, and it can be wired directly into existing circuits
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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 and
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Quick Start List for Platform 2.2 Quick Start List for Platform Follow these steps when using the TPA0103 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 and TPA0103 EVM 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 TPA0103
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Quick Start List for Stand-Alone 2.3 Quick Start List for Stand-Alone Follow these steps to use the TPA0103 EVM stand-alone or connect it into existing circuits or equipment. Connections to the TPA0103 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 R10 R11 C7 V
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Chapter 3 Details This chapter provides details on the TPA0103 IC, the evaluation module, and the steps in the Quick-Start List, additional application information, and a parts list for the TPA0103 evaluation module. Topic Page 3.1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2 3.2 The TPA0103 Audio Power Amplifier Evaluation Module . . . . . . . . . 3–3 3.3 Using the TPA0103 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 and
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The TPA0103 Audio Power Amplifier Evaluation Module 3.2 The TPA0103 Audio Power Amplifier Evaluation Module The TPA0103 Audio Power Amplifier Evaluation Module is powered by a TPA0103 3-channel audio power amplifier capable of delivering 535 mW of continuous power to each of the left and right single-ended 4-Ω speaker loads, and 1.75 W of continuous power (BTL) to a center channel 4-Ω load. The amplifier IC can be configured for center channel only, center or L/R channels, or three channel opera
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The TPA0103 Audio Power Amplifier Evaluation Module Figure 3–3. TPA0103 EVM Schematic Diagram R15, 20 kΩ LOUT+ ROUT+ 1 24 C8 R13 GND/HS GND/HS C3 5 pF 200 kΩ R7 5 pF 2 23 20 kΩ NC NC R2 20 kΩ 3 22 R14 LOUT+ ROUT+ C1 C6 R1 R8 R4 200 kΩ 1 μF 1 μF 20 kΩ 20 kΩ 20 kΩ 4 21 LIN LLINE IN RLINE IN RIN R9 5 20 20 kΩ LINHP LHP IN RHP IN RINHP R3 R10 C2 C7 R16 6 19 20 kΩ 20 kΩ 1 μF 1 μF CIN RBYPASS 20 kΩ C9 2.2 μF R17 TPA0103 V 7 18 DD R18 V V V 200 kΩ DD DD DD 20 kΩ C5 C10 C11 2.2 μF 8 17 2.2 μF 10 μF GND
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The TPA0103 Audio Power Amplifier Evaluation Module Figure 3–4. TPA0103 Amplifier IC TPA0103 C OUT– C IN C OUT+ SHUTDOWN MODE A CNTL MODE B R HP IN R OUT+ MUX R Line IN HP/Line CNTL L HP IN MUX L OUT+ L Line IN The IC includes three separate amplifier channels: a left and right stereo pair (single-ended) and a bridged-tied load (BTL) center channel. In the BTL mode, the two output lines of the center channel operate 180° out-of-phase with each other for increased power. The center channel speake
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The TPA0103 Audio Power Amplifier Evaluation Module 3.2.3 Inputs and Gain The left and right single-ended channels remain separate from input to output. On the TPA0103 EVM board, the left and right channel inputs are mixed to produce a monaural representation of the stereo signal and applied to the amplifier IC center channel input. Each of the left and right channels has two separate signal inputs. They are called line and headphone (HP) and are pin-selectable. The line inputs and the center ch
