TPA2000D4 Filterless ClassĆD With Stereo Headphone Audio Power Amplifier EVM User’s Guide 2001 Mixed-Signal Products SLOU091A
Preface How to Use This Manual This document contains the following chapters: - Chapter 1—Introduction Chapter 2—Operation Related Documentation From Texas Instruments J 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. FCC Warning This equipment is intended for use in a laboratory test environment only.
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Running Title—Attribute Reference Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.
Running Title—Attribute Reference Figures 1–1 2–1 2–2 2–3 2–4 2–5 2–6 The TI TPA2000D4 Audio Amplifier EVM—Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 Quick Start Platform Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 Module Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Quick Start Module Map . . . . . . . . . . . . . .
Chapter 1 Introduction This chapter provides an overview of the Texas Instruments (TI) TPA2000D4 filterless class-D audio with stereo headphone amplifier evaluation module (SLOP329). It includes a list of EVM features, a brief illustrated description of the module, and a list of EVM specifications. Topic Page 1.1 Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Feature Highlights 1.
Description 1.2 Description The TPA2000D4 filterless class-D stereo audio power amplifier evaluation module is a complete, 2-W per channel class-D stereo audio power amplifier with stereo headphone output jack that can operate without an output filter. It consists of the TI TPA2000D4 class-D stereo 2-W audio power amplifier IC with stereo headphone output jack, along with a small number of other parts mounted on a circuit board that measures approximately 2-1/4 inches by 1-1/2 inches (see Figure 1–1).
TPA2000D4 EVM Specifications 1.3 TPA2000D4 EVM Specifications Supply voltage range, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 V to 5.5 V Supply current, IDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 A max Continuous output power per channel, BTL, PO: 4 Ω, VDD = 5 V . . . . . . . . . . . . . . . . . . . . . .
Chapter 2 Operation The steps in this chapter can be followed to quickly prepare the TPA2000D4 filterless class-D audio amplifier EVM for use. Using the TPA2000D4 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 2.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external power connected to VCC power input connector J1, J2, and/or VDD power input connector J6 are correct. Overvoltage or reverse-polarity power applied to these terminals can open onboard soldered-in fuses and cause other damage to the platform, installed evaluation modules, and/or the power source.
Quick Start List for Platform 2.2 Quick Start List for Platform Follow these steps when using the TPA2000D4 EVM with the TI plug-n-play audio amplifier evaluation platform (see the platform user’s guide, literature number 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.
Quick Start List for Platform - Inputs and outputs 8) Ensure that the audio signal source level is set to minimum. 9) Connect the audio source to left and right RCA phono jacks J3 and J5 or stereo miniature phone jack J4. 10) The outputs are to be configured in the following manner: a) Connect speakers to left and right RCA jacks J7 and J9 or to stripped wire speaker connectors J8. or b) Insert the headphone into the onboard headphone jack (J3).
Quick Start List for Stand-Alone - Power Up 12) Verify correct voltage and input polarity and set the external power supply to ON. If VCC and an onboard regulator EVM are used to provide VDD, set platform power switch S1 to ON. Platform LED2 should light indicating the presence of VDD, and the evaluation modules installed on the platform should begin operation. 13) Adjust the signal source level as needed. 2.
Quick Start List for Stand-Alone - Inputs and outputs 3) Ensure that audio signal source level adjustments are set to minimum. 4) Connect the right (left) positive lead of the audio source to the module RIN+ (LIN+) pins and the negative lead to the RIN– (LIN–) pins. 5) The outputs are to be configured in the following manner: a) Connect the speakers to ROUT+ (LOUT+) and ROUT– (LOUT–), making sure that the polarities are observed. or b) Insert the headphone into the onboard headphone jack.
2.4 Reference TPA2000D4 Audio Power Amplifier EVM Parts List 2.4.1 Table 2–6. TPA2000D4 EVM Parts List Description Size EVM Qty. C1–4 Capacitor, ceramic chip, 0.22 µF, +10%, Y5V, 16 V 0603 4 Murata GRM39–Y5V224Z16 C5, C6 Capacitor, ceramic chip, 0.1 µF, +10%, X7R, 16 V 0603 2 Murata GRM39–X7R104K16 C7 Capacitor, ceramic, 220 pF, +10%, XICON, 50 V 0603 1 Mouser 140–CC504B221K C8 Capacitor, ceramic, 0.
TPA2000D4 Filterless Class-D EVM Schematic 2.4.2 TPA2000D4 Filterless Class-D EVM Schematic The TPA2000D4 filterless class-D EVM schematic is shown in Figure 2–4. Figure 2–4.
TPA2000D4 Filterless Class-D EVM PCB Layers 2.4.3 TPA2000D4 Filterless Class-D EVM PCB Layers The following illustrations depict the TPA2000D4 filterless class-D EVM PCB assembly and layers. These drawings are not to scale. Gerber plots can be obtained from any TI Sales Office. Figure 2–5. TPA2000D4 Filterless Class-D EVM Top Assembly Note: All open areas are solid copper planes.
TPA2000D4 Filterless Class-D EVM PCB Layers Figure 2–6. TPA2000D4 Filterless Class-D EVM Bottom Assembly Note: 2-10 All open areas are solid copper planes.
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.
