User’ s Guide
March 2003 HPL
SLOU159
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
and conditions of sale supplied at the time of order acknowledgment.
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
and applications, customers should provide adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,
copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process
in which TI products or services are used. Information published by TI regarding third–party products or services
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
of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of information in TI data books or data sheets is permissible only if reproduction is without
alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction
of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for
such altered documentation.
Resale of TI pro d u cts or services with statements different from or beyond the parameters stated by TI for that
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is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
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 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 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
Dallas, Texas 75265
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.
Related Documentation From Texas Instruments
- TPA3003D2 data sheet (SLOS406)
vi
Contents
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Description 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 TPA3003D2EVM Specifications 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Operation 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Quick Start List for Stand-Alone Operation 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1 Power Supply 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.2 Inputs and Outputs 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.3 Evaluation Module Preparations 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.4 Control Inputs 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.5 Power Up 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Reference 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 TPA3003D2EVM Schematic 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 EVM PCB Layers 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 TPA3003D2EVM Parts List 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 DC Volume Control for Class-D Outputs (OUT+ and OUT–) 3-5. . . . . . . . . . . . . . . . . . . . . .
vii
Contents
Figures
1–1 The TI TPA3003D2 Audio Power Amplifier EVM (Top View) 1-2. . . . . . . . . . . . . . . . . . . . . . . . .
1–2 The TI TPA3003D2 Audio Power Amplifier EVM (Bottom View) 1-2. . . . . . . . . . . . . . . . . . . . .
3–1 TPA3003D2EVM Schematic 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 TPA3003D2EVM (Top Layer) 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3 TPA3003D2EVM (Bottom Layer) 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
3–1 TPA3003D2EVM Parts List 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 DC Volume Control for Class-D Outputs 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
viii
Chapter 1
Introduction
This chapter provides a brief description of the TPA3003D2EVM.
Topic Page
1.1 Description 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 TPA3003D2EVM Specifications 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
1-1
Description
1.1 Description
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)
1-2
1.2 TPA3003D2EVM Specifications
TPA3003D2EVM Specifications
Supply voltage range, V
Input voltage range, V
Supply current, I
CC
CC
(VOL, MUTE, FADE) 0 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I
(SD) 0 V to VCC + 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
I
(RINN, RINP, LINN, LINP) 0 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
I
Continuous output power per channel, P
Minimum load impedance, R
L
8.5 V to 14 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 A Max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
: 8 Ω, VCC = 12 V, THD+N = 10% 3 W. . . . . . . . . . . . . . . . .
O
8 Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
1-3
1-4
Chapter 2
Operation
This chapter describes how to operate the TPA3003D2EVM.
Topic Page
2.1 Quick Start List for Stand-Alone Operation 2-2. . . . . . . . . . . . . . . . . . . . . .
Operation
2-1
Quick Start List for Stand-Alone Operation
2.1 Quick Start List for Stand-Alone Operation
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.
2.1.1 Power 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 .
2.1.2 Inputs 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.
2.1.3 Evaluation Module Preparations
Adjust the signal source level as needed.
2.1.4 Control 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:
2.1.5 Power 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.
Topic Page
3.1 TPA3003D2EVM Schematic 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 EVM PCB Layers 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 TPA3003D2EVM Parts List 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 DC Volume Control 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference
3-1
TPA3003D2EVM Schematic
3.1 TPA3003D2EVM Schematic
Figure 3–1.TPA3003D2EVM Schematic
SHUTDOWN
RIN–
RIN+
LIN+
LIN–
AGND
AGND
S1
1.0µ F
1.0µ F
50kΩ
VCC
10nF
C18
Vcc
R2
120kΩ
C1
C2
1.0µ F
C5
C3
1.0µ F
C4
1.0µ F
T1
P1
AGND
SD
RINN
RINP
V2P5
LINP
LINN
AVDDREF
VREF
AGND
AGND
VOLUME
REFGND
BSRN
BSLN
PVCCR
PVCCR
PVCCL
PVCCL
GND
ROUT–
C23
C22
1nF
1nF
L1
L2
(Bead)
(Bead)
C15
10µF
PGND
0.1µ F0.1µ F
C9
C10
ROUTN
ROUTN
PGNDR
PGNDR
TPA3003D2
LOUTN
LOUTN
PGNDL
PGNDL
ROUT+
ROUTP
ROUTP
LOUTP
LOUTP
Vcc
10nF
C19
PVCCR
PVCCL
BSRP
PVCCR
VCLAMPR
MUTE
AVCC
FADE
AVDD
COSC
ROSC
AGND
VCLAMPL
PVCCL
BSLP
C7
C14
R1
C8
1.0uF
PGND
Vcc
C16
AGND
PGND
NC
NC
NC
1.0µ F
C13
0.1µ F10µ F
C6
0.1µ F
220pF
120kΩ
C20
10nF
LOUT–
C11
0.1µ F
C17
10µ F
L3
(Bead)
C24
1nF
C12
0.1µ F
PGND
L4
(Bead)
C25
1nF
C21
10nF
VccVcc
LOUT+
3-2
3.2 EVM PCB Layers
Figure 3–2.TPA3003D2EVM (Top Layer)
EVM PCB Layers
Figure 3–3.TPA3003D2EVM (Bottom Layer)
Reference
3-3
TPA3003D2EVM Parts List
3.3 TPA3003D2EVM Parts List
Table 3–1.TPA3003D2EVM Parts List
Reference Description Size Qty Mfg. Part # Vendor #
C1–C5 Capacitor, ceramic, 1.0 µF,
C6 Capacitor, ceramic, 220 pF,
C7, C8 Capacitor, ceramic, 1.0 µF,
C9–C14 Capacitor, ceramic, 0.1 µF,
C15, C16,
C17
C18–C21 Capacitor, ceramic, 0.01 µF,
C22–C25 Capacitor, ceramic, 1000 pF,
L1–L4 Ferrite bead, 0.05 Ω DCR, 70
R1–R2 Resistor, chip, 120 kΩ, 1/16
D1–D4 Do not install
P1 Potentiometer, 50 kΩ, thru
S1 Switch, momentary, SMD, low
PnP pins Headers, 0.1 in centers, 1/2 in
T1 Test points, 0.040” mounting
U1 TPA3003D2PFB 48-pin
+80%/–20%, Y5V, 10 V
±5%, 50 V
+80%/–20%, Y5V, 50 V
+80%/–20%, Y5V, 50 V
Capacitor, ceramic, 10 µF,
+80%/–20%, Y5V, 25 V
+80%/–20%, Y5V, 50 V
±10%, X7R, 50 V
Ω at 100 MHz, 3A
W, 5%
hole
profile
long
hole
0603 5 Panasonic ECJ–1VF1A105Z Digi–Key
PCC1787CT–ND
0603 1 Panasonic ECJ–1VC1H221J Digi–Key
PCC221ACVCT–ND
0805 2 Taiyo Yuden UMK212F105ZG–T TeCal
UMK212F10526–T
0603 5 Panasonic ECJ–1VF1H104Z Digi–Key
PCC2153CT–ND
1210 3 Panasonic ECJ–4YF1E106Z Digi–Key
PCC2171CT–ND
0603 4 Panasonic ECJ–1VF1H103Z Digi–Key
PCC1801CT–ND
0603 4 Panasonic ECJ–1VB1H102K Digi–Key
PCC1772TR–ND
1206 4 Fair–rite 2512067007Y3 Mouser
623–2512067007Y3
0603 2 Panasonic ERJ–3GEYJ124V Digi–Key
P120KGTR–ND
1 Bourns 3362P–1–503 Digi–Key
3362P–503–ND
1 Panasonic EVQ–PPBA25 Digi–Key
P8086SCT–ND
11 Samtec SW–19–8–G–S
1 Farnell 240–345
1 TI TPA3003D2PFB
QFP
3-4
3.4 DC Volume Control
Table 3–2.DC Volume Control for Class-D Outputs
DC Volume Control
VOLTAGE ON THE VOLUME PIN AS
A PERCENTAGE OF VREF
(INCREASING VOLUME OR FIXED
GAIN)
% %
0 – 4.5 0 – 2.9 –75
4.5 – 6.7 2.9 – 5.1 –40.0
6.7 – 8.91 5.1 – 7.2 –37.5
8.9 – 11.1 7.2 – 9.4 –35.0
11.1 – 13.3 9.4 – 11.6 –32.4
13.3 – 15.5 11.6 – 13.8 –29.9
15.5 – 17.7 13.8 – 16.0 –27.4
17.7 – 19.9 16.0 – 18.2 –24.8
19.9 – 22.1 18.2 – 20.4 –22.3
22.1 – 24.3 20.4 – 22.6 –19.8
24.3 – 26.5 22.6 – 24.8 –17.2
26.5 – 28.7 24.8 – 27.0 –14.7
28.7 – 30.9 27.0 – 29.1 –12.2
30.9 – 33.1 29.1 – 31.3 –9.6
33.1 – 35.3 31.3 – 33.5 –7.1
35.3 – 37.5 33.5 – 35.7 –4.6
37.5 – 39.7 35.7 – 37.9 –2.0
39.7 – 41.9 37.9 – 40.1 0.5
41.9 – 44.1 40.1 – 42.3 3.1
44.1 – 46.4 42.3 – 44.5 5.6
46.4 – 48.6 44.5 – 46.7 8.1
48.6 – 50.8 46.7 – 48.9 10.7
50.8 – 53.0 48.9 – 51.0 13.2
53.0 – 55.2 51.0 – 53.2 15.7
55.2 – 57.4 53.2 – 55.4 18.3
57.4 – 59.6 55.4 – 57.6 20.8
59.6 – 61.8 57.6 – 59.8 23.3
61.8 – 64.0 59.8 – 62.0 25.9
64.0 – 66.2 62.0 – 64.2 28.4
66.2 – 68.4 64.2 – 66.4 30.9
68.4 – 70.6 66.4 – 68.6 33.5
> 70.6 >68.6 36.0
VOLTAGE ON THE VOLUME PIN
AS A PERCENTAGE OF VREF
(DECREASING VOLUME)
GAIN OF
CLASS-D
AMPLIFIER
dB
Reference
3-5
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