Page 3 - Preface; Related Documentation From Texas Instruments
iii Chapter Title—Attribute Reference Preface Related Documentation From Texas Instruments J TI Plug-N-Play Audio Amplifier Evaluation Platform (TI LiteratureNumber SLOU011) provides detailed information on the evaluationplatform and its use with TI audio evaluation modules. J TPA005D12 CLASS-D STER...
Page 5 - Contents; Introduction
Running Title—Attribute Reference v Chapter Title—Attribute Reference Contents 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Feature Highlights 1-2 . . . . . . . . . . . . . . . . . . ....
Page 6 - Figures
Running Title—Attribute Reference vi Figures 1–1 The TI TPA005D12 Class-D Stereo Audio Power Amplifier EVM — Top View 1-3 . . . . . . . . . 1–2 The TI TPA005D12 Class-D Stereo Audio Power Amplifier EVM — Bottom View 1-3 . . . . . . 2–1 Quick Start Platform Map 2-2 . . . . . . . . . . . . . . . . . ....
Page 7 - This chapter provides an overview of the Texas Instruments (TI; Topic; Chapter 1
1-1 Introduction Introduction This chapter provides an overview of the Texas Instruments (TI ) TPA005D12 class-D stereo audio power amplifier evaluation module (SLOP246). Itincludes a list of EVM features, a brief description of the module illustrated witha pictorial diagram, and a list of EVM spe...
Page 9 - Description; inches by 2; Bottom View
Description 1-3 Introduction 1.2 Description The TPA005D12 class-D stereo audio power amplifier evaluation module is acomplete, 2-Watt per channel stereo audio power amplifier. It consists of theTI TPA005D12 class-D stereo audio power amplifier IC along with a smallnumber of other parts mounted on a...
Page 10 - TPA005D12 Class-D EVM Specifications; Maximum
TPA005D12 Class-D EVM Specifications 1-4 Introduction Single in-line header pins extend from the underside of the module circuitboard to allow the EVM to either be plugged into the TI plug-n-play audioAmplifier evaluation Platform, or to be wired directly into existing circuits andequipment when use...
Page 11 - Quick Start; Chapter 2
2-1 Quick Start Quick Start Follow the steps in this chapter to quickly prepare the TPA005D12 class-Dstereo audio amplifier EVM for use. Using the TPA005D12 class-D EVM withthe TI plug-n-play audio amplifier evaluation platform is a quick and easy wayto connect power, signal and control inputs, and ...
Page 12 - Power Supply Input Polarity and Maximum Voltage; power; Quick Start Platform Map
Precautions 2-2 Quick Start 2.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external powerconnected to V CC power input connector J1, J2, and/or V DD power input connector J6 are correct. Overvoltage or reverse-polaritypower applied ...
Page 13 - Quick Start List for Platform; Platform Preparations; Table 2–2. Platform Jumper and Switch Settings for the TPA005D12; Power supply
Quick Start List for Platform 2-3 Quick Start 2.2 Quick Start List for Platform Follow these steps when using the TPA005D12 class-D EVM with the TIplug-n-play audio amplifier evaluation platform (see the platform user’s guide,SLOU011, for additional details). Numbered callouts for selected steps are...
Page 14 - Quick Start List for Stand-Alone
Quick Start List for Stand-Alone 2-4 Quick Start 2.3 Quick Start List for Stand-Alone Follow these steps to use the TPA005D12 class-D EVM stand-alone or toconnect it into existing circuits or equipment. Connections to the TPA005D12module header pins can be made via individual sockets, wire-wrapping,...
Page 15 - Details; Chapter 3
3-1 Details Details This chapter provides details on the TPA005D12 IC, the evaluation module,and the steps in the Quick-Start list, a discussion of class-D amplifiers,additional application information, a parts list for the TPA005D12 class-Devaluation module, module performance graphs, and module PC...
Page 16 - Figure 3–1. The TI Plug-N-Play Audio Amplifier Evaluation Platform
Precautions 3-2 Details 3.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external powerconnected to V CC power input connector J1, J2, and/or V DD power input connector J6 are correct. Overvoltage or reverse-polaritypower applied to t...
Page 17 - The TPA005D12 Class-D Audio Power Amplifier Evaluation Module
The TPA005D12 Class-D Audio Power Amplifier Evaluation Module 3-3 Details 3.2 The TPA005D12 Class-D Audio Power Amplifier Evaluation Module The TPA005D12 class-D stereo audio power amplifier evaluation module ispowered by a TPA005D12 class-D stereo power amplifier integrated circuit.The EVM is capab...
Page 19 - Figure 3–4. TPA005D12 Class-D EVM Schematic Diagram; TPA005D12 Class-D Stereo Audio Amplifier IC; A in the
The TPA005D12 Class-D Audio Power Amplifier Evaluation Module 3-5 Details Figure 3–4. TPA005D12 Class-D EVM Schematic Diagram TPA005D12 S2SD R2100k SD R1100k S1Mute Mute VDD C3 LOUTP 11 PGND 12 PGND 13 LOUTN 14 LOUTN 15 LPVDD 16 NC 17 NC 18 LOUTP 10 LPVDD 9 VDD 8 AGND 7 LCOMP 6 LINP 5 LINN 4 NC 19 A...
Page 20 - Overview of Class-D Audio Amplifiers
The TPA005D12 Class-D Audio Power Amplifier Evaluation Module 3-6 Details 3.2.2 Overview of Class-D Audio Amplifiers Class-D audio amplifiers are very similar in operation to switch-mode powersupplies in that both compare an input signal with a reference to create an errorvoltage that controls a pul...
Page 21 - Figure 3–6. Class-D Input and Output Waveforms; NOT to system ground. This requires that the Rout–/Lout–
The TPA005D12 Class-D Audio Power Amplifier Evaluation Module 3-7 Details Figure 3–6. Class-D Input and Output Waveforms VDD 0 V VRAMP VIN VOUT The V RAMP signal must be at a much higher frequency than the highest frequency component of V IN to obtain an accurate representation at the low-pass filte...
Page 22 - Class-D Differential Inputs; Table 3–1. TPA005D12 Class-D EVM Fault Indicator Table
The TPA005D12 Class-D Audio Power Amplifier Evaluation Module 3-8 Details 3.2.4 Class-D Differential Inputs The TPA005D12 EVM line inputs allow the use of a single-ended or differentialaudio source. The differential input stage of the amplifier cancels any noisethat appears on both input lines of a ...
Page 24 - Class-D Amplifier Design Considerations
Class-D Amplifier Design Considerations 3-10 Details 3.3 Class-D Amplifier Design Considerations Detailed information for proper design and implementation of TI class-D audiopower amplifiers appears in the application report Design Considerations for Class-D Audio Power Amplifiers, TI Literature Num...
Page 25 - Using The TPA005D12 Class-D EVM With the Plug-N-Play Platform; Installing and Removing EVM Boards; EVM Insertion; ) Remove all power from the evaluation platform.; ) Remove all power from the evaluation platform.
Using The TPA005D12 Class-D EVM With the Plug-N-Play Platform 3-11 Details 3.4 Using The TPA005D12 Class-D EVM With the Plug-N-Play Platform The TPA005D12 class-D stereo audio amplifier evaluation module wasdesigned to be used with the TI plug-n-play audio amplifier evaluationplatform. It simply plu...
Page 26 - Module Switches; S1 — Shutdown; A compared to approximately 2.5 mA in the mute mode. The; draws 23 mA of current.; S2 — Mute Switch
Using The TPA005D12 Class-D EVM With the Plug-N-Play Platform 3-12 Details 3.4.2 Module Switches The TPA005D12 class-D stereo audio amplifier evaluation module isequipped with two pushbutton switches that allow the module shutdown andmute functions to be manually activated. 3.4.2.1 S1 — Shutdown To ...
Page 27 - Signal Routing; Figure 3–7. Platform Signal Routing and Outputs; F electrolytics) and can; U5 position; when the TPA005D12 class-D EVM is installed on the platform.
Using The TPA005D12 Class-D EVM With the Plug-N-Play Platform 3-13 Details 3.4.3 Signal Routing Signal flow on the platform is controlled by two signal routing switches, asshown in Figure 3 – 7. Figure 3–7. Platform Signal Routing and Outputs U1 Signal Conditioning On Off U5 Stereo Headphone Amplifi...
Page 28 - Shutdown; Headphone Jack Control Signals; Figure 3–8. Mute/Mode and Polarity Control
Using The TPA005D12 Class-D EVM With the Plug-N-Play Platform 3-14 Details 3.4.4 Shutdown The TPA005D12 class-D EVM is equipped with a shutdown control input pin.When this input is tied to GND, the TPA005D12 amplifier IC on the moduleenters the shutdown mode and dissipates very little power. When th...
Page 29 - MODE when a separate headphone amplifier is
Using The TPA005D12 Class-D EVM With the Plug-N-Play Platform 3-15 Details 3.4.4.2 Mute/Mode Select (JP6) A 3-pin jumper header (JP6) on the platform, functioning as an SPDT switch,routes the control signal from the headphone jack to either the mute controlinput pin or the mode control input pin of ...
Page 30 - Power Requirements; MUST NOT exceed
Power Requirements 3-16 Details 3.4.5 Power Requirements The TPA005D12 class-D stereo audio power amplifier evaluation module isdesigned to operate from a supply voltage between 4.5 V and 5.5 V. For bestperformance (highest output power with lowest distortion), the module shouldbe operated at 5 V. T...
Page 31 - Inputs and Outputs; Inputs; Figure 3–9. Typical Headphone Plug
Inputs and Outputs 3-17 Details 3.4.6 Inputs and Outputs The TI plug-n-play audio amplifier evaluation platform is equipped with severalstandard conectors for audio inputs and outputs. 3.4.6.1 Inputs In most cases, audio signals enter the platform through either a pair of RCAphono jacks (J3 and J5) ...
Page 32 - Using The TPA005D12 Class-D EVM Stand-Alone; Power Connections
Using The TPA005D12 Class-D EVM Stand-Alone 3-18 Details 3.5 Using The TPA005D12 Class-D EVM Stand-Alone Using the TPA005D12 class-D stereo audio power amplifier evaluationmodule stand-alone is much the same as using it with the platform. The same4.5-V to 5.5-V power supply range and the isolated ou...
Page 33 - Input Connections
Using The TPA005D12 Class-D EVM Stand-Alone 3-19 Details 3.5.2 Input Connections The class-D amplifier input signals can be connected in either of two ways:differential or single-ended. For differential operation, connect the two linesfrom the signal source to the positive and negative inputs of eac...
Page 34 - TPA005D12 Class-D EVM Performance Characteristics; results are shown in Figures 3–11 through 3–17.; Figure 3–11. Class-D Amplifier Frequency Response at 4
TPA005D12 Class-D EVM Performance Characteristics 3-20 Details 3.6 TPA005D12 Class-D EVM Performance Characteristics The TPA005D12 class-D stereo audio power amplifier EVM was tested usingan Audio Precision System II, model 2322, a 5-V regulated dc power supply,and the TI PNP audio power amplifier e...
Page 35 - Figure 3–12. Class-D Amplifier Distortion versus Output Power at 4; Figure 3–13. Class-D Amplifier Distortion versus Output Power at 8
TPA005D12 Class-D EVM Performance Characteristics 3-21 Details Figure 3–12. Class-D Amplifier Distortion versus Output Power at 4 Ω 1 THD+N – T otal Harmonic Distortion Plus Noise – (%) TOTAL HARMONIC DISTORTION PLUS NOISE vs OUTPUT POWER 0.1 PO – Output Power – W 0.02 1 kHz VDD = 5 VRL = 4 Ω TA = 2...
Page 38 - TPA005D12 Class-D EVM Interconnects
TPA005D12 Class-D EVM Interconnects 3-24 Details 3.7 TPA005D12 Class-D EVM Interconnects Table 3–4 shows the correlation between the TPA005D12 class-D amplifier ICpins, the EVM pins, and the plug-n-play (PNP) platform sockets. Table 3–4. TPA005D12 Class-D EVM/Plug-N-Play Platform Interconnects CLASS...
Page 39 - TPA005D12 Class-D EVM Bill of Materials; Table 3–5. TPA005D12 Class-D EVM Bill of Materials
TPA005D12 Class-D EVM Bill of Materials 3-25 Details 3.8 TPA005D12 Class-D EVM Bill of Materials The components in the bill of materials (Table 3–5) were selected for theircommon values, availability, and the smallest size available to meet thesecriteria. Table 3–5. TPA005D12 Class-D EVM Bill of Mat...
