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EVALUATION BOARD/KIT IMPORTANT NOTICE

Texas Instruments (TI) provides the enclosed product(s) under the following conditions:

This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT,
DEMONSTRATION, OR EVALUATION PURPOSES ONLY 
and is not considered by TI to be a
finished end-product fit for general consumer use. Persons handling the product(s) must have
electronics training and observe good engineering practice standards. As such, the goods being
provided are not intended to be complete in terms of required design-, marketing-, and/or
manufacturing-related protective considerations, including product safety and environmental
measures typically found in end products that incorporate such semiconductor components or
circuit boards. This evaluation board/kit does not fall within the scope of the European Union
directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling
(WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these
directives or other related directives.

Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the
board/kit may be returned within 30 days from the date of delivery for a full refund. THE
FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER
AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY,
INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR
PURPOSE.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further,
the user indemnifies TI from all claims arising from the handling or use of the goods. Due to the
open construction of the product, it is the user’s responsibility to take any and all appropriate
precautions with regard to electrostatic discharge.

EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY
SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES.

TI currently deals with a variety of customers for products, and therefore our arrangement with the
user is not exclusive.

TI assumes no liability for applications assistance, customer product design, software
performance, or infringement of patents or services described herein.

Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s
Guide prior to handling the product. This notice contains important safety information about
temperatures and voltages. For additional information on TI’s environmental and/or safety
programs, please contact the TI application engineer or visit

www.ti.com/esh

.

No license is granted under any patent right or other intellectual property right of TI covering or
relating to any machine, process, or combination in which such TI products or services might be
or are used.

FCC Warning

This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT,
DEMONSTRATION, OR EVALUATION PURPOSES ONLY 
and is not considered by TI to be a
finished end-product fit for general consumer use. It generates, uses, and can radiate radio
frequency energy and has not been tested for compliance with the limits of computing devices
pursuant to part 15 of FCC rules, which are designed to provide reasonable protection against
radio frequency interference. Operation of this equipment in other environments may cause
interference with radio communications, in which case the user at his own expense will be
required to take whatever measures may be required to correct this interference.

Summary of Contents for TAS5508-5142K7EVM

Page 1: ...TAS5508 5142K7EVM User s Guide Evaluation Module for the TAS5508B Digital Audio PWM Processor and TAS5142 Digital Amplifier Power Output Stage User s Guide June 2006 SLEU071 ...

Page 2: ...2 SLEU071 June 2006 Submit Documentation Feedback ...

Page 3: ... Loudspeaker Connectors J101 J107 10 2 4 Headphone Connector J700 11 2 5 Control Interface J40 11 2 6 Digital Audio Interface J60 13 3 Protection 15 3 1 Short Circuit Protection and Fault Reporting Circuitry 15 3 2 Fault Reporting 15 4 Related Documentation From Texas Instruments 17 4 1 Trademarks 17 Important Notices 18 SLEU071 June 2006 Contents 3 Submit Documentation Feedback ...

Page 4: ...s 10 2 4 J101 J107 Pin Numbers 11 2 5 J700 Pin Numbers 11 List of Tables 2 1 Recommended Supply Voltages 9 2 2 J901 Pin Description 10 2 3 J900 Pin Description 10 2 4 J902 Pin Description 10 2 5 J101 J107 Pin Description 11 2 6 J700 Pin Description 11 2 7 J40 Pin Description 11 2 8 J60 Pin Description 13 3 1 TAS5142 Warning Error Signal Decoding 15 4 List of Figures SLEU071 June 2006 Submit Docume...

Page 5: ... drivers four matched and electrically isolated enhancement mode N channel power DMOS transistors and protection fault reporting circuitry The DKD package has a PowerPAD on the top side for heat transfer through a heatsink The heatsink in this design is for evaluation purposes only This EVM together with a TI input USB board is a complete 7 channel digital audio amplifier system which includes dig...

Page 6: ...eadphone Output TAS5508 5142K7EVM Features 7 channel PurePath Digital evaluation module double sided plated through PCB layout Stereo channel line output Stereo headphone output Self contained protection system short circuit and thermal Standard I2 S and I2 C control connector for TI input board Double sided plated through PCB layout Figure 1 1 Integrated PurePath Digital Amplifier System Overview...

Page 7: ...gulator PSU INTERFACE J901 PSU CONTROL J902 INPUT SIGNAL INTERFACE J60 CONTROL INTERFACE J40 HEADPHONE OUTPUT J700 OUTPUT STAGE CHANNEL 6 OUTPUT STAGE CHANNEL 7 J101 J103 J102 J104 PSU INTERFACE J900 J105 J106 J107 PCB Key Map Physical structure for the TAS5508 5142K7EVM is illustrated in Figure 1 2 Figure 1 2 Physical Structure for TAS5508 5142K7EVM Rough Outline SLEU071 June 2006 Overview 7 Subm...

Page 8: ...www ti com PCB Key Map Overview 8 SLEU071 June 2006 Submit Documentation Feedback ...

Page 9: ...es Maximum output stage supply voltage depends of the speaker load resistance Please check the recommended maximum supply voltage in the TAS5142 data sheet Table 2 1 Recommended Supply Voltages VOLTAGE DESCRIPTION CURRENT RECOMMENDATIONS LIMITATIONS System power supply 15 V to 20 V 0 3 A Output stage power supply 0 V to 32 V 6 A 1 1 The rated current correspond to 2 channel full scale 80 W each wh...

Page 10: ...put stage power supply 3 GND Extra ground 4 GND Extra ground This interface is used for onboard sensing of output supply voltage and for the power supply volume control PSVC signal Figure 2 3 J902 Pin Numbers Table 2 4 J902 Pin Description PIN NO NET NAME AT SCHEMATICS DESCRIPTION 1 Reserved for future use 2 PVDD Sense of output power supply 3 GND Ground 4 RESET System reset bidirectional 5 PSVC P...

Page 11: ...headphone output This interface connects the TAS5508 5142K7EVM board to a TI input USB board Table 2 7 J40 Pin Description PIN NO NET NAME AT SCHEMATICS DESCRIPTION 1 GND Ground 2 RESERVED 3 GND Ground 4 RESET System reset bidirectional Activate MUTE before RESET for quiet reset 5 BKND ERR Backend error or soft reset provides reduced click and pop reset without resetting I2C volume register settin...

Page 12: ... high temperature Pin 21 connected to Pin 20 See Chapter 3 Protection 22 OTW Temperature warning Activated if TAS5142 has reached temperature warning level 23 OTW Temperature warning Activated if one or more TAS5142 has reached temperature warning level Pin 23 connected to Pin 22 24 HP SEL Headphone select Headphone active when LOW and inactive when HIGH To use this pin 100 Ω resistor must be plac...

Page 13: ...RIPTION 1 GND Ground 2 MCLK Master clock input Low jitter system clock for PWM generation and reclocking Ground connection from source to TAS5508B must be a low impedance connection 3 GND Ground 4 SDIN1 I2S data 1 channel 1 and 2 5 SDIN2 I2S data 2 channel 3 and 4 6 SDIN3 I2S data 3 7 SDIN4 I2S data 4 8 Reserved 9 Reserved 10 GND Ground 11 SCLK I2S bit clock 12 GND Ground 13 LRCLK I2S left right c...

Page 14: ...www ti com Digital Audio Interface J60 System Interfaces 14 SLEU071 June 2006 Submit Documentation Feedback ...

Page 15: ...he TAS5142 indicate fault conditions Please refer to the TAS5142 Data Manual for a description of these pins Table 3 1 TAS5142 Warning Error Signal Decoding OTW SD DEVICE CONDITION 0 0 High temperature error and or high current error 0 1 High temperature warning 1 0 Undervoltage lockout or high current error 1 1 Normal operation no errors warnings The temperature warning signals at the TAS5508 514...

Page 16: ...www ti com Fault Reporting Protection 16 SLEU071 June 2006 Submit Documentation Feedback ...

Page 17: ...TAS5508B data sheet SLES162 TAS5142 data sheet SLES126 TPA112 data sheet SLOS212 TPS3801K33 data sheet SLVS219 LM317M data sheet SLVS297 TPS76733 data sheet SLVS208 Additional documents TAS5508 5142K7EVM Application Report SLEA055 PC Configuration Tool for TAS5508B TAS5508 GUI ver 4 0 or later General Application Notes Equibit PurePath Digital and PowerPAD are trademarks of Texas Instruments SLEU0...

Page 18: ... construction of the product it is the user s responsibility to take any and all appropriate precautions with regard to electrostatic discharge EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES TI currently deals with a variety of customers for products and therefore our arrangement with the...

Page 19: ...t If there is uncertainty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 75 C The EVM is designed to operate properly with certain components above 75 C as long as the input and output ranges are maintained These components include but are not limited to linear regulators switching transi...

Page 20: ...siness practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all necess...

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