Texas Instruments eZAudio TPA2015D1 User Manual Download Page 23

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.

EVM Warnings and Restrictions

It is important to operate this EVM within the input voltage range of 2.5 V to 5.5 V and the output voltage range of 0 V to 5.5 V .

Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are
questions concerning the input range, please contact a TI field representative prior to connecting the input power.

Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the
EVM. Please consult the EVM User

'

s Guide prior to connecting any load to the EVM output. 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 85

°

C. The EVM is designed to

operate properly with certain components above 85

°

C as long as the input and output ranges are maintained. These components

include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of
devices can be identified using the EVM schematic located in the EVM User

'

s Guide. When placing measurement probes near

these devices during operation, please be aware that these devices may be very warm to the touch.

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

Copyright

©

2011, Texas Instruments Incorporated

Summary of Contents for eZAudio TPA2015D1

Page 1: ...e 3 2 2 Running the Demonstration 4 3 Hardware Description 7 3 1 TPA2015D1 Features 7 4 Schematics PCB and Bill of Materials 9 4 1 Schematics 9 4 2 Printed Circuit Board 12 4 3 Bill of Materials 17 Ap...

Page 2: ...designed for evaluation the kit does contain a mini PCB that can be used for evaluation purposes NOTE This document presents evaluation module EVM specifications audio performance measurements graphs...

Page 3: ...from an external 5 V supply with a 600 mA rating 2 Quick Start Guide 2 1 Powering the Device 1 Speaker Plug the speaker into the white jack on the left side of the board 2 Audio Cable Plug 3 5 mm audi...

Page 4: ...r left corner to the right To turn off hold the Play button for 3 seconds 2 2 Running the Demonstration The device defaults to the following settings when booting up Gain 20 dB AGC 3 97 V VDD 3 60 V B...

Page 5: ...Notice that the current draw 250 mA and power output 0 45 W decrease Explanation This demonstrates the battery tracking feature of the TPA2015D1 When the battery voltage reaches the AGC threshold the...

Page 6: ...he battery voltage The current increases in order to maintain power output The audio also sounds distorted without AGC enabled 8 Joystick Move the joystick up until AGC is enabled by choosing one of t...

Page 7: ...s distorted because the signal is clipped at the battery voltage rails When boost is enabled the increased headroom for the output swing significantly reduces clipping 3 Hardware Description 3 1 TPA20...

Page 8: ...ery voltage 3 V Battery tracking SpeakerGuard Protects speakers by preventing clipping High efficiency 81 at 1 W and 3 6 V Eliminates GSM TDMA frame rate noise Very high PSRR 90 dB 27 Better efficienc...

Page 9: ...0 90 9Kohms 392Kohms GND R12 499Kohms AGC and Gain control Input Section Vrms Capture Voltage divider to accomodate VFS of A D converter eZ Audio TPA2015D1 Demo Kit www ti com Schematics PCB and Bill...

Page 10: ...USB NC NC Case Case Case Case Data GND ID_NC 5v Data GND 1 2 BP1 L4 2 1 R26 470mohms 1 8V to 4 8V Adjustable Output 1A Step Down Converter EVM Supply Generation 100 Kohm Digital Pot IBAT Meter Shunt...

Page 11: ...OY STICK GND GND GND R43 5 1Kohms www ti com Schematics PCB and Bill of Materials Figure 3 MSP430 Schematic Figure 4 Display and Joystick Schematics 11 SLOU312 June 2011 eZAudio TPA2015D1 Demonstratio...

Page 12: ...and Bill of Materials www ti com 4 2 Printed Circuit Board Figure 5 Top Assembly 12 eZAudio TPA2015D1 Demonstration Kit SLOU312 June 2011 Submit Documentation Feedback Copyright 2011 Texas Instrument...

Page 13: ...w ti com Schematics PCB and Bill of Materials Figure 6 Bottom Copper 13 SLOU312 June 2011 eZAudio TPA2015D1 Demonstration Kit Submit Documentation Feedback Copyright 2011 Texas Instruments Incorporate...

Page 14: ...Schematics PCB and Bill of Materials www ti com Figure 7 Top Copper 14 eZAudio TPA2015D1 Demonstration Kit SLOU312 June 2011 Submit Documentation Feedback Copyright 2011 Texas Instruments Incorporated...

Page 15: ...w ti com Schematics PCB and Bill of Materials Figure 8 Copper Layer 2 15 SLOU312 June 2011 eZAudio TPA2015D1 Demonstration Kit Submit Documentation Feedback Copyright 2011 Texas Instruments Incorporat...

Page 16: ...hematics PCB and Bill of Materials www ti com Figure 9 Copper Layer 3 16 eZAudio TPA2015D1 Demonstration Kit SLOU312 June 2011 Submit Documentation Feedback Copyright 2011 Texas Instruments Incorporat...

Page 17: ...R20 R21 RESISTOR SMT 0603 1 1 10W 1 00K VISHAY CRCW06031003F 4 R5 R6 R40 R41 RESISTOR SMT 0603 1 1 10W 100K VISHAY 0603YC104JAT2A 4 C4 C12 C16 C26 CAPACITOR SMT 0603 CERAMIC 0 1uF 16V 5 X7R AVX 2163...

Page 18: ...22JAT2A 1 C31 CAPACITOR SMT 0603 CERAMIC 0 0022uF 50V 5 X7R AVX ECS T1CY105R 1 C35 CAP TAN SMT 1 0uF 16V 20 DF 0 04 PANASONIC EVQ PPBA25 1 S1 SWITCH SMT 2P SPST NO 2 5mm HEIGHT DUST PROOF PANASONIC LT...

Page 19: ...Gain0 Gain1 TPA2015D1 Gain0 Gain1 Gain Gain Pin L L Float 15 5 dB H L Vdd 2 15 5 dB L H Vdd 20 dB H H GND 6 dB L 0 V and H 3 3 V Gain0 and Gain1 change the gain settings for the TPA2015D1 They control...

Page 20: ...al potentiometers have been set to default conditions and Default VDD voltage has been measured by Stellaris MCU VDD default is 3 6 V REG_EN This control signal enables U6 the adjustable VDD regulator...

Page 21: ...age range 1 8 V to 4 8 V For the full voltage range use USB power option batteries give only up to 4 5 V For more information on the digital potentiometer see the TPL0102 data sheet SLIS134 Table 2 Co...

Page 22: ...VM Power up Sequence 1 ENB Low 2 END Low 3 REG_EN Low 4 Gain0 Low 5 Gain1 Low 6 AGC0 Low 7 AGC1 Low 8 Set Digital pot wiper resistance to position 41 write 0x29 to register 0x00 and wait 50 ms 9 REG_E...

Page 23: ...uct 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...

Page 24: ...orized 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 parti...

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