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2*25W@4

Ω

TPA3123

Class-D Audio Amplifier Board

User’s Guide

©

2004-2009 Sure Electronics Inc. AA-AB018_Ver1.0

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Summary of Contents for TPA3123

Page 1: ...2 25W 4 TPA3123 Class D Audio Amplifier Board User s Guide 2004 2009 Sure Electronics Inc AA AB018_Ver1 0...

Page 2: ...its 3 1 5 Quick Start 3 Chapter 2 Hardware Detail 5 2 1 Power Connection 5 2 2 Input Connections 5 2 3 Output Connections 6 2 4 Connection with Next Board 7 2 5 Mute Settings 8 2 6 Sleep Settings 8 2...

Page 3: ...2 25W 4 TPA3123 Class D Audio Amplifier Board 2004 2009 Sure Electronics Inc AA AB018_Ver1 0_Page ii NOTES Product Version Ver 1 0 Document Version Ver 1 0...

Page 4: ...er board employs TPA3123D2 chip from TI It supports dual channel amplification and each such channel is rated at 25W which helps producing state of the art sound quality The efficiency of the TPA3123D...

Page 5: ...se 20Hz 20KHz 3dB y Signal Noise Ratio 100dB A Weighted y High Output Power 10W 8 10 0 THD N 25W 4 10 0 THD N y High Efficiency 92 8W 8 85 16W 4 y Audiophile Quality Sound 0 08 THD N 5W 8 0 08 THD N 1...

Page 6: ...wn in figure 1 3 FIGURE 1 3 CONNECTION SCHEMATIC Note Please observe the following steps to complete verification so as to ensure the products are intact during transit 1 Open the amplifier package an...

Page 7: ...2 25W 4 TPA3123 Class D Audio Amplifier Board FIGURE 1 4 CASCADING SCHEMATIC Note GND should be grounded or connected to the housing of the device 2004 2009 Sure Electronics Inc AA AB018_Ver1 0_Page 4...

Page 8: ...n of power supply FIGURE 2 1 POWER CONNECTION TABLE 2 1 POWER CONNECTION Connector Mark Description Jack J11 DC 10 30V power supply VCC The positive of DC 10 30V power supply Terminal Blocks J10 GND T...

Page 9: ...Terminal Blocks J3 PIN 3 Channel 2 Input Note You are allowed to feed only one group dual channel of audio signal to the amplifier board at a time Please refer to 2 6 Gain Setting for details 2 3 Outp...

Page 10: ...ion Positive Output of Channel 1 J1 Negative Output of Channel 1 J5 J6 Negative Output of Channel 2 Banana Connectors Positive Output of Channel 2 J9 J4 Output of Channel 1 Terminal blocks Refer to on...

Page 11: ...Mute Settings To mute the output audio signal connect VDD and MUTE of the terminal block with a piece of lead Usually MUTE shall be left unconnected FIGURE 2 6 MUTE SETTINGS TABLE 2 5 MUTE SETTINGS Co...

Page 12: ...ted both channels will resume regular operation SD Note SD means that the chip works with low power consumption MUTE means that the chip normally works with no output 2 7 Gain Settings The on board 2...

Page 13: ...nput sensitivities Improper selection will cause the audio distortion or even damage the amplifier board 3 No preamplifier or other devices are needed for gain settings We won t assume any responsibil...

Page 14: ...and extend its service lifetime please read the following warnings carefully since warranties will be voided if you do not observe the following warnings Warning 1 Quality related issues caused by pot...

Page 15: ...x Supply Voltage 10V 30V Supply Current 2A Signal Noise Ratio 90dB 100dB Gain 36dB 0 100V 0 117V Gain 32dB 0 180V 0 196V Gain 28dB 0 380V 0 396V Input Sensitivity Gain 20dB 0 780V 0 803V VDD 24V RL 4...

Page 16: ...ge Channel Separation 50dB 60dB SW1 K1 K2 Weak ON ON 18 dB 20 dB 22 dB Low OFF ON 24 dB 26 dB 28 dB Medium ON OFF 30 dB 32 dB 34 dB Power Gain High OFF OFF 34 dB 36 dB 38 dB Operating Temperature 0 20...

Page 17: ...2 25W 4 TPA3123 CLASS D AUDIO AMPLIFIER BOARD USER S GUIDE 2004 2009 Sure Electronics Inc Chapter 4 Mechanical Drawing FIGURE 4 1 MECHANICAL DRAWING A AB018_Ver1 0_Page 14 A...

Page 18: ...J5 OUT1 1 C12 1uF 50V L2 33uH C14 470uF 35V 1 2 VCC J7 CH2 1 2 J8 CON2 1 2 VCC R1 4 7K C30 1uF 50V GAINA0 VCC PIN1 PIN3 MUTE VCC C16 1uF 50V VCC C2 470uF 35V 1 2 GAINA0 U1 TPA3123 HTSSOP 1 2 3 4 5 6...

Page 19: ...re Electronics Co Ltd 5F Zone A Qinhuai Technology Innovation Center 105 2 DaMing Rd ZIP 210022 Nanjing P R China Tel 86 13601408832 For technical questions only 86 25 66606340 English service from GM...

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