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User’s Guide
May 1998 Mixed-Signal Products
SLOU016
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IMPORTANT NOTICE Texas Instruments (TI) reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. TI warrants performance of its semiconductor products and related software to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testi
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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. TPA0202 STEREO 2-W AUDIO POWER AMPLIFIER (literature number SLOS205) This is the data sheet for the TPA0202 audio amplifier integrated circuit. FCC Warning This equipment is intended for use in a laboratory test environment only. It generates, uses, and can rad
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If You Need Assistance If You Need Assistance. . . If you want to. . . Do this. . . † Request more information about Call the PIC hotline: Texas Instruments mixed signal (972) 644–5580 products Or send a fax to the PIC: (972) 480–7800 Or write to: Texas Instruments Incorporated Product Information Center, MS 3123 P.O. Box 660246 Dallas, Texas 75266 † Order Texas Instruments docu- Call the PIC hotline: mentation (972) 644–5580 † Ask questions about product op- Call the PIC hotline: eration or rep
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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 TPA0
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Running Title—Attribute Reference Figures 1–1 The TI TPA0202 Audio Amplifier Evaluation Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2–1 Quick Start Platform Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2–2 Module Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 2–3 Quick Start Module Map . . . . . . . . . . . . .
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Chapter 1 Introduction This chapter provides an overview of the Texas Instruments (TI) TPA0202 Audio Amplifier Evaluation Module (SLOP202). 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 TPA0202 Audio Amplifier Evaluation Module and the TI Plug-N-Play Audio Amplifier Evaluation Platform include the following features: TPA0202 Stereo 2-W Audio Power Amplifier Evaluation Module Internal depop circuitry to eliminate turn-on transients in outputs Dual channel, bridge-tied load (BTL) or single-ended operation 3.3-V and 5-V operation 2 W per channel output power into 3 Ω at 5 V, BTL 850 mW per channel output power into 3 Ω
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Description 1.2 Description The TPA0202 Stereo 2-W Audio Power Amplifier Evaluation Module is a complete, 2-Watt per channel stereo audio power amplifier. It consists of the TI TPA0202 Stereo 2-W 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 TPA0202 Audio Amplifier Evaluation Module R11 C7 RVDD GND R10 RHP ROUT+ + S5 GND GND C11 R8 S6 C6 ROUT– RIN S3 C8 R9 HP/L* GN
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TPA0202 EVM Specifications 1.3 TPA0202 EVM Specifications Supply voltage range, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 V to 5.5 V DD Supply current, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 A max DD Continuous output power per channel, P :4-Ω BTL, V =5 V . . . . . . . . . . . . . . . . . . . . . . 2 W O DD 4-Ω BTL, V =3.3 V . . . . . . . . . . . . . . . . 80
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Chapter 2 Quick Start The steps in this chapter can be followed to quickly prepare the TPA0202 audio amplifier EVM for use. Using the TPA0202 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 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 TPA0202 EVM with the TI Plug-N-Play Au- dio 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 Figure 2–2, 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 TPA02
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Quick Start List for Platform Evaluation Module Preparations Figure 2–2. Module Preparation 14 12 R11 C7 RVDD GND R10 RHP ROUT+ + S5 GND GND C11 R8 S6 C6 ROUT– RIN S3 C8 R9 15 HP/L* GND R7 S4 C9 C10 SE/BTL* TPA0202 SAMPLE EVM R12 13 Lit.# SLOP202 16 U1 S8 D1 R13 S7 R2 C3 R4 S2 MUTE GND C4 C5 11 LIN C1 R1 S1 LOUT– GND + GND LHP R3 C2 C12 R5 LOUT+ LVDD GND 11) To have the module amplifier IC enter the shutdown mode when the module mute control input is activated, set shutdown jumper S1 to ON. T
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Quick Start List for Stand-Alone 2.3 Quick Start List for Stand-Alone Follow these steps to use the TPA0202 EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TPA0202 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 2–3 and details appear in Chapter 3. Figure 2–3. Quick Start Module Map 9 7
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Quick Start List for Stand-Alone Evaluation Module Preparations 6) To have the module amplifier IC enter the shutdown mode when the module mute control input is activated, set shutdown jumper S1 to ON. To have the amplifier IC only mute when the module mute control input is activated, set shutdown jumper S1 to OFF. 7) To select the line inputs, set input select jumper S3 to OFF. To select the headphone inputs, set input select jumper S3 to ON. 8) To allow the module SE/BTL control input to sw
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Chapter 3 Details This chapter provides details on the TPA0202 IC, the evaluation module, and the steps in the Quick-Start List, additional application information, and a parts list for the TPA0202 evaluation module. Topic Page 3.1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2 3.2 The TPA0202 Audio Power Amplifier Evaluation Module . . . . . . . . . 3–3 3.3 Using the TPA0202 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 TPA0202 Audio Power Amplifier Evaluation Module 3.2 The TPA0202 Audio Power Amplifier Evaluation Module The TPA0202 Audio Power Amplifier Evaluation Module is powered by a TPA0202 stereo power amplifier capable of delivering greater than 2 W of continuous power per channel into 3-Ω loads. The amplifier IC can be operated in either the BTL or single-ended output mode. The evaluation module includes control inputs for muting and shutdown, selection between two sets of stereo inputs, and switch
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The TPA0202 Audio Power Amplifier Evaluation Module Figure 3–3. TPA0202 EVM Schematic Diagram S8 1 24 GND/HS GND/HS LOUT+ ROUT+ TPA0202 2 23 C3 C8 NC NC 5 pF 5 pF 3 22 LOUT+ ROUT+ C1 C6 R2 R7 R1 R8 1 μF 50 kΩ 1 μF 50 kΩ 20 kΩ 20 kΩ 4 21 LIN LLINE IN RLINE IN RIN R4 R9 5 20 20 kΩ 20 kΩ LHP LHP IN RHP IN RHP R3 R10 C2 C7 6 19 20 kΩ 20 kΩ 1 μF 1 μF LBYPASS RBYPASS C4 C9 2.2 μF 2.2 μF S5 7 18 LV LV RV DD DD DD RV LV DD DD C5 C12 2.2 μF 8 17 10 μF C10 C11 SHUTDOWN NC 2.2 μF 10 μF 9 16 R5 S3 MUTE OUT
