Manuals / Texas Instruments / Home Audio / Stereo Amplifier

Texas Instruments APA100 manual User’s Guide, August, Audio Power Amplifiers, SLOU170

Models: APA100

1 42

Download 42 pages 18.78 Kb

Page 1

APA100

APA100

100−W Analog Input Class-D Amplifier TPA2001D1/TAS5111

User’s Guide

August 2004

Audio Power Amplifiers

SLOU170

Image 1

Texas Instruments APA100 manual User’s Guide, August, Audio Power Amplifiers, SLOU170

Contents

User’s Guide Audio Power AmplifiersAPA100 AugustProducts IMPORTANT NOTICEApplications Read This First How to Use This ManualAbout This Manual Information About Cautions and WarningsFCC Warning Related Documentation From Texas InstrumentsData Sheets This is an example of a warning statementContents Tables FiguresChapter EVM OverviewPage Topic1.2 Power Requirements 1.1 Features1.2.1Supply Voltage EVM Basic Function/Block Diagram 1.3 EVM Basic Function/Block DiagramEVM Overview Feedback EVM Basic Function/Block DiagramIntegrator TLV2464Schematic PCB DesignChapter Page2.1.1Split Ground Plane 2.1 PCB Layout2.1.3Analog Section Layout 2.1.2H-BridgeLayoutFigure 2−2. APA100 Split Plane Bottom Layout Figure 2−3. Top Copper and Silkscreen 2.1.4PCB LayersFigure 2−5. Drill Drawing Figure 2−4. Bottom Copper and SilkscreenPCB Layout PCB DesignTable 2−1. Parts List 2.2 Bill of MaterialsBill of Materials Schematic 2.3 SchematicPCB Design Page Chapter EVM OperationPage TopicFigure 3−1. Quick Start Module Map 3.1 Quick Start3.3 Reset Button/Mute 3.2 Power−Up/Down Sequence3.4 Error Signals Table 3−1. TAS5111 Error Decoding3.5 Changing the Gain Chapter Technical InformationPage TopicFigure 4−1. APA100 Block Diagram 4.1 Feedback System DesignPhase Margin + 180 Phase at Fc Figure 4−4. APA100 Integrator Design Closed−loop gain + 1.5 0 C10 V1 1 0 4.2 TPA2001D1 Class-DModulator TPA2001D1 Class-DModulator Figure 4−7. TPA2001D1 Block DiagramCh1: 3V/Div Ch2: 3V/Div Ch3: 3V/Div Ch4: 1V/Div t − Time −4.3 TAS5111 H-Bridge 4.4 TLV2464A Gain Setting and FeedbackFigure 4−9. APA100 Output Filter 4.5 LC FilterTable 4−1. TAS5111 Thermal Table 4.6 ThermalAs an indication of the importance of keeping the thermal grease layer thin, if the thermal grease layer increases to 0.002 inch thick, the required heatsink thermal resistance changes to 2.4C/W Chapter Measured ResultsPage TopicTotal Harmonic Distortion + Noise 5.1 Total Harmonic Distortion + NoiseMeasured Results Total Harmonic Distortion + NoiseOutput Power 5.2 Output PowerEfficiency 5.3 EfficiencyMeasured Results 5.5 Signal-to-NoiseRatio SNR 5.4 Gain and Phase ResponseGain and Phase Response Supply Ripple Rejection 5.6 Supply Ripple RejectionMeasured Results