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TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty . Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for
their products and applications using TI components. To minimize the risks associated with customer products
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TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,
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does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.
Use of such information may require a license from a third party under the patents or other intellectual property
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Copyright 2003, Texas Instruments Incorporated
EVM IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION
PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided
may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective
considerations, including product safety measures typically found in the end product incorporating the goods.
As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic
compatibility and therefore may not meet the technical requirements of the directive.
Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the 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 S TATUTORY, 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. Please be aware that the products
received may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). 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 notexclusive.
TI assumes no liability for applications assistance, customer product design, software performance, orinfringement of patents or services described herein.
Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM
User’s Guide prior to handling the product. This notice contains important safety information about temperatures
and voltages. For further safety concerns, please contact the TI application engineer.
Persons handling the product must have electronics training and observe good laboratory practice standards.
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.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2003, Texas Instruments Incorporated
EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the supply voltage range specified in this user’s
guide. The supply voltage range should be 8.5 V to 14 V, and supply current (I
)should be
cc
no greater than 1.6 A maximum.
Operating outside the specified supply voltage range may cause unexpected operation and/or
irreversible damage to the EVM. If there are questions concerning the supply voltage and
current range, please contact a TI field representative prior to applying power to the device.
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
60°C. The EVM is designed to operate properly with certain components above 60°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
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Copyright 2003, Texas Instruments Incorporated
Information About Cautions and Warnings
This book may contain cautions and warnings.
Information About Cautions and Warnings
Preface
Read This First
FCC Warning
This is an example of a caution statement.
A caution statement describes a situation that could potentially
damage your software or equipment.
This is an example of a warning statement.
A warning statement describes a situation that could potentially
cause harm to you
The information in a caution or a warning is provided for your protection.
Please read each caution and warning carefully.
This equipment is intended for use in a laboratory test environment only. It ge n erates, uses, a n d c a n r a d i a t e r a dio frequency energy and has not been tested
for compliance with the limits of computing devices pursuant to subpart J of
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.
.
v
Related Documentation From Texas Instruments
Electrostatic Sensitive Devices
This EVM contains components that can potentially be damaged by
electrostatic discharge. Always transport and store the EVM in its
supplied ESD bag when not in use. Handle using an antistatic
wristband. Operate on an antistatic work surface. For more
information on proper handling, refer to SSYA008.
The TPA3003D2 audio power amplifier evaluation module is a
3-watt-per-channel class-D stereo audio power amplifier complete with a
small number of external components mounted on a circuit board that
measures approximately 2-1/4 inches by 1-3/4 inches (Figure 1–1 and
Figure 1–2).
Figure 1–1.The TI TPA3003D2 Audio Power Amplifier EVM (Top View)
Figure 1–2.The TI TPA3003D2 Audio Power Amplifier EVM (Bottom View)
Follow these steps to use the TPA3003D2EVM stand-alone or when
connecting it into existing circuits or equipment. Connections to the EVM
module header pins can be made via individual sockets, wire-wrapping, or
soldering to the pins, either on the top or the bottom of the module circuit board.
2.1.1Power Supply
1) Ensure that all external power sources are set to OFF.
2) Connect an external regulated power supply , s e t b e t w e en 8.5 V and 14 V,
to the module VCC and GND pins, taking care to observe marked polarity .
2.1.2Inputs and Outputs
1) Ensure that the audio signal source level adjustments are set to minimum.
2) Connect the right and left positive audio source to the module RIN+ and
LIN+ pins, respectively. Connect the right and left negative audio source
to the module RIN– and LIN– pins, respectively.
3) If using single ended inputs, ground the LIN+ and RIN+ pins and connect
the signal source to RIN– and LIN–.
Note:
If RIN+ and LIN+ on the EVM are connected to ground, the RINP and LINP
on TPA3003D2 IC are ac grounded through C2 and C3. For the best noise
performance, directly connect the input side (left side) of C2 and C3 to the
AGND side of C5 with a short trace or solder bridge.
2.1.3Evaluation Module Preparations
Adjust the signal source level as needed.
2.1.4Control Inputs
Note:
Refer to the TPA3003D2 data sheet for logic threshold voltage ratings.
1) SHUTDOWN: This pin is active low. A low on this pin shuts down the
amplifier; a hig h o n t h i s p i n p l aces the amplifier in the active state. Leaving
this pin floating also allows normal amplifier operation. Holding down
switch S1 places the amplifier in the shutdown state. Releasing S1 returns
the amplifier to the active state. The absolute maximum voltage on this
terminal is V
2) MUTE: This pin controls the stereo class-D outputs of the amplifier
(ROUT+, ROUT–, LOUT+, and LOUT–). This pin is active high. A high on
this pin causes the outputs (OUT+ and OUT–) to instantaneously ramp
down in volume, which mutes the device. A low on this pin causes the
outputs (OUT+ and OUT–) to instantaneously ramp up to volume. The
absolute maximum voltage on this pin is 5.5 V.
+ 0.3 V.
CC
2-2
Quick Start List for Stand-Alone Operation
Note:
Do not leave the MUTE pin floating. The TPA3003D2EVM connects the
MUTE pin to ground. If the MUTE function is to be utilized on the EVM, unsolder the pin and lift it off the module circuit board. Solder a wire to the pin
and apply the necessary voltage for the desired function.
3) FADE: This pin controls the stereo class–D outputs of the amplifier
(ROUT+, ROUT – , LOUT+, and LOUT – ) during the four states of the
device (power on, power off, coming out of shutdown, and going into
shutdown). This pin is active low. A low on this pin causes the outputs
(OUT+, and OUT – ) to slowly ramp up to volume, when the device is
powered on o r w hen the device c omes out of t he s hutdown s tate. A low a lso
causes the outputs to slowly ramp down in volume when the device goes
into shutdown. A h igh on this pin causes the outputs (OUT+, and OUT – )
to instantaneously ramp up to volume when the device is powered on or
when the device comes out of the shutdown state. A high also causes the
outputs to instantaneously ramp down in volume when the device goes
into shutdown. The absolute maximum voltage on this terminal is 5.5 V.
Note:
2.1.5Power Up
Do not leave the FADE
FADE
pin to ground. If the fade function is to be disabled, unsolder the pin
pin floating. The TPA3003D2EVM connects the-
and lift it off the module circuit board. Solder a wire to the pin and apply the
necessary voltage for the desired function.
1) Verify correct voltage and input polarity and set the external power supply
to ON. The EVM begins operation.
2) Adjust the signal source level as needed.
Adjusting the Speaker Volume
3) Adjust the speaker (connected across OUT+ and OUT–) volume as
needed by turning the P1 potentiometer in the clockwise direction to
increase the volume. Conversely, turn P1 in the counterclockwise
direction to decrease the volume. Refer to Table 3–2 in the Reference
section for volume control settings.
Test Pins for Speaker Volume
- T1 – VOL – Speaker volume
Operation
2-3
2-4
Chapter 3
Reference
This chapter provides reference information for the TPA3003D2EVM.