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Texas Instruments TPA2001D2EVM - User guides
User’s Guide
November 2000
Mixed-Signal Products
SLOU093
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
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pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
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Copyright  2000, Texas Instruments Incorporated
Running Title—Attribute Reference
Preface
Read This First
Related Documentation From Texas Instruments
TI Plug-N-Play Audio Amplifier Evaluation Platform (literature
number SLOU011) provides detailed information on the evaluation
platform and its use with TI audio evaluation modules.
TPA2001D2 1-W STEREO CLASS-D AUDIO POWER
AMPLIFIER (literature number SLOS292) This is the data sheet
for the TPA2001D2 audio amplifier integrated circuit.
FCC Warning
This equipment is intended for use in a laboratory test environment only. It
generates, uses, and can radiate radio 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.
Chapter Title—Attribute Reference
iii
iv
Running Title—Attribute Reference
Contents
1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1
Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3
TPA2001D2 EVM Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
1-2
1-3
1-4
2
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2
Quick Start List for Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3
Quick Start List for Stand-Alone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4
Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.1 TPA2001D2 EVM Connected for Stereo Output . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.2 TPA2001D2 Audio Power Amplifier Evaluation Module Parts List . . . . . . . . . .
2.4.3 TPA2001D2 Filterless Class-D EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.4 TPA2001D2 Filterless Class-D EVM PCB Layers . . . . . . . . . . . . . . . . . . . . . . . .
2-1
2-2
2-3
2-5
2-6
2-6
2-7
2-8
2-9
Chapter Title—Attribute Reference
v
Running Title—Attribute Reference
Figures
1–1
1–2
2–1
2–2
2–3
2–4
2–5
2–6
2–7
2–8
2–9
The TI TPA2001D2 Audio Amplifier EVM Without Output Filter—Top View . . . . . . . . . . . . 1-3
The TI TPA2001D2 Audio Amplifier EVM Without Output Filter—Bottom View . . . . . . . . . 1-3
Quick Start Platform Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Module Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Quick Start Module Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
TPA2001D2 EVM Connected for Stereo Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
TPA2001D2 Filterless Class-D EVM Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
TPA2001D2 Filterless Class-D EVM Top Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
TPA2001D2 Filterless Class-D EVM Bottom Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
TPA2001D2 Filterless Class-D EVM Top Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
TPA2001D2 Filterless Class-D EVM Bottom Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Tables
2–1
2–2
2–3
2–4
2–5
2–6
vi
Typical TI Plug-N-Play Platform Jumper and Switch Settings for the TPA2001D2 . . . . . .
Typical TPA2001D2 EVM Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Platform Jumper and Switch Settings for the TPA2001D2 . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical TPA2001D2 EVM Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TPA2001D2 EVM Gain Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TPA2001D2 EVM Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1
2-1
2-3
2-4
2-6
2-7
Chapter 1
Introduction
This chapter provides an overview of the Texas Instruments (TI) TPA2001D2
filterless class-D audio amplifier evaluation module (SLOP315). It includes a
list of EVM features, a brief description of the module illustrated with a pictorial
diagram, and a list of EVM specifications.
Topic
Page
1.1
Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
1.3
TPA2001D2 EVM Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
1-1
Feature Highlights
1.1 Feature Highlights
The TI TPA2001D2 audio amplifier evaluation module and the TI plug-n-play
audio amplifier evaluation platform include the following features:
TPA2001D2 Stereo 1-W Filterless Class-D Audio Power Amplifier
Evaluation Module
Class-D without output filter
Internal depop circuitry to minimize transients in outputs
High efficiency
Low distortion
Low supply current (8 mA)
1 W per channel output power into 8 Ω at 5 V
Low current consumption in shutdown mode
Four selectable gain settings: 8, 12, 17.5, and 23.5 dB
Differential stereo inputs and outputs
24-pin TSSOP PWP package
Quick and Easy Configuration With the TI Plug-N-Play Audio Amplifier
Evaluation Platform
Evaluation module is designed to simply plug into the platform,
automatically making all signal, control, and power connections
Platform provides flexible power options
Jumpers on the platform select power and module control options
Switches on the platform route signals
Platform provides quick and easy audio input and output connections
Platform Power Options
External 5-V – 15-V dc VCC supply inputs
External regulated VDD supply input
Socket for onboard 5 V/3.3 V VDD voltage regulator EVM
Onboard overvoltage and reverse polarity power protection
Platform Audio Input and Output Connections
1-2
Left and right RCA phono jack inputs
Miniature stereo phone jack input
Left and right RCA phono jack outputs
Left and right compression speaker terminal outputs
Miniature stereo headphone jack output
Introduction
Description
1.2 Description
The TPA2001D2 filterless class-D stereo audio power amplifier evaluation
module is a complete, 1-W per channel class-D stereo audio power amplifier
that can operate without an output filter. It consists of the TI TPA2001D2
class-D stereo 1-W audio power amplifier IC along with a small number of
other parts mounted on a circuit board that measures approximately 2-1/4
inches by 1-1/2 inches (Figure 1–1 and Figure 1–2).
Figure 1–1. The TI TPA2001D2 Audio Amplifier EVM Without Output Filter—Top View
+ VDD
ROUT+
GND
GND
GND
RIN+
ROUT–
C16
C8
RIN–
C11
C12
GAIN1
C4
S1
SHUTDOWN
2000
TPA2001D2 EVM
SLOP315
C3
R2
C2
C1
C7
GAIN0
C6
R3
C5
LIN–
LIN+
GND
R1
C10 C9
U1
SHUTDOWN
LOUT–
C15
VDD
+
GND
GND
LOUT+
Figure 1–2. The TI TPA2001D2 Audio Amplifier EVM Without Output Filter—Bottom View
C21
C17
C20
C18
C19
R4
Single in-line header pins extend from the underside of the module circuit
board to allow the EVM to be plugged into the TI plug-n-play audio amplifier
evaluation platform, or to be wired directly into existing circuits and equipment
when used stand-alone.
Introduction
1-3
TPA2001D2 EVM Specifications
The platform has room for a single TPA2001D2 evaluation module and is a
convenient vehicle for demonstrating TI’s audio power amplifier and related
evaluation modules. The EVMs simply plug into the platform, which
automatically provides power to the modules, interconnects them correctly,
and connects them to a versatile array of standard audio input and output jacks
and connectors. Easy-to-use configuration controls allow the platform and
EVMs to quickly model many possible end-equipment configurations.
There is nothing to build, nothing to solder, and nothing but the speakers
included with the platform to hook up.
1.3 TPA2001D2 EVM Specifications
Supply voltage range, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5 V to 5.5 V
Supply current, IDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A max
Continuous output power per channel, PO: 8 Ω, VDD = 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 W
Minimum load impedance, RL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ω
1-4
Introduction
Chapter 2
Operation
The steps in this chapter can be followed to quickly prepare the TPA2001D2
filterless class-D audio amplifier EVM for use. Using the TPA2001D2 with the
TI plug-n-play audio amplifier evaluation platform is a quick and easy way to
connect power, signal and control inputs, and signal outputs to the EVM using
standard connectors. However, the audio amplifier evaluation module can be
used stand-alone by making connections directly to the module pins, and can
be wired directly into existing circuits or equipment.
The platform switch and jumper settings shown in Table 2–1 are typical for the
TPA2001D2 EVM and will cause the TPA2001D2 to shut down when a plug
is inserted into platform headphone jack J10.
Table 2–1. Typical TI Plug-N-Play Platform Jumper and Switch Settings for the
TPA2001D2
EVM
JP4
JP5
JP6
JP7
JP8
S2
S3
P-N-P Platform
X
ON
Mute
X
Lo
Note 2
U5
Notes:
1) ON = Jumper installed, OFF = Jumper NOT Installed, X = Don’t care
2) Set S2 to ON when signal conditioning board is installed in U1; set S2
to OFF when no signal conditioning board is installed.
Table 2–2. Typical TPA2001D2 EVM Jumper Settings
Note:
EVM
GAIN0
GAIN1
TPA2001D2
OFF
OFF
ON = Jumper installed, OFF = Jumper NOT Installed, X = Don’t care
Topic
Page
2.1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
2.2
Quick Start List for Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
2.3
Quick Start List for Stand-Alone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5
2.4
Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
Operation
2-1
Precautions
2.1 Precautions
Power Supply Input Polarity and Maximum Voltage
Always ensure that the polarity and voltage of the external power
connected to VCC power input connector J1, J2, and/or VDD power
input connector J6 are correct. Overvoltage or reverse-polarity
power applied to these terminals can open onboard soldered-in
fuses and cause other damage to the platform, installed evaluation
modules, and/or the power source.
Inserting or Removing EVM Boards
Do not insert or remove EVM boards with power applied—damage
to the EVM board, the platform, or both may result.
Figure 2–1. Quick Start Platform Map
7b
1 12
C1+
On
Off
7b
ICC
VR2
JP4
VR1
+
U2
Speaker
Output
Left
Out
Stereo
Headphone
Output
J10
+
HP Out
R4
6
5
J9
+
S3
HP
Source
Spk(U2-U4) C3 C2
JP8
U5
JP7
HP(U5)
U2-U4
R3
+
JP6
U4
U5
GND
TP1
2
10
– Left
Out
On
Conditioning
TEXAS
INSTRUMENTS
1997
2-2
+ Right –
Out
U3
Off
S2
U1
J5
Left
In
3
Mode
Mute
Polarity
Lo
Hi
****CAUTION****
Do not insert or remove
EVM boards with power
applied
Plug-N-Play Audio Amplifier
Evaluation Platform
SLOP097 Rev. C.1
J6
VDD
In/Out
LED2
VDD
Audio
Power
Amps
J4
Stereo
In
Audio
Input
J8
J7 Right
Out
JP5
IDD
LED1
VCC
J3
Right
In
9
DC
Power
In/Out
R2
R1
Signal Conditioning
7a
F2
B1
D1
D2
D3
D4 J2
AC/DC
In
Power
Input
U6
7b
POWER
SUPPLY
S1
Pwr
J1
VCC
In
+
JP3
Batt
JP2
AC/DC
JP1 (J2)
VCC(J1)
DC
SOURCE
F1
7b
R5
4
Operation
Quick Start List for Platform
2.2 Quick Start List for Platform
Follow these steps when using the TPA2001D2 EVM with the TI plug-n-play
audio amplifier evaluation platform (see the platform user’s guide, literature
number SLOU011, for additional details). Numbered callouts for selected
steps are shown in Figure 2–1 and Figure 2–2.
Platform preparations
1) Ensure that all external power sources are set to OFF and that the platform
power switch S1 is set to OFF.
2) Install a TPA2001D2 module in platform socket U2, taking care to align the
module pins correctly.
3) Use switch S2 to select or bypass the signal conditioning EVM (U1).
4) Set control signal Polarity jumper JP8 to Lo.
5) Set jumper JP6 to select the Mute control input (causes the TPA2001D2
to shut down if a plug is inserted into platform headphone jack J10).
6) If a headphone amplifier will be installed in U5, set headphone source
switch S3 to U5.
Table 2–3. Platform Jumper and Switch Settings for the TPA2001D2
EVM
JP4
JP5
JP6
JP7
JP8
S2
S3
P-N-P Platform
X
ON
Mute
X
Lo
Note 2
U5
Notes:
1) ON = Jumper installed, OFF = Jumper NOT Installed, X = Don’t care
2) Set S2 to ON when signal conditioning board is installed in U1; set S2
to OFF when no signal conditioning board is installed.
Power supply
7) Select and connect the power supply (ensure power supply is set to OFF ):
a) Connect an external regulated power supply set to 5 V to platform VDD
power input connector J6 taking care to observe marked polarity,
or
b) Install a voltage regulator EVM (SLVP097 or equiv.) in platform socket
U6. Connect a 7-V – 12-V power source to a platform VCC power input
J1 or J2 and jumper the appropriate power input (see platform user’s
guide). If using J1, J2, or B1, set S1 to ON to supply power to the EVM.
Inputs and outputs
8) Ensure that the audio signal source level is set to minimum.
9) Connect the audio source to left and right RCA phono jacks J3 and J5 or
stereo miniature phone jack J4.
10) Connect speakers to left and right RCA jacks J7 and J9 or to stripped wire
speaker connectors J8.
Operation
2-3
Quick Start List for Platform
Evaluation Module Preparations
11) Use jumpers GAIN0 and GAIN1 to set the gain (Figure 2–2 and
Table 2–4).
Figure 2–2. Module Preparation
+ VDD
ROUT+
GND
GND
GND
RIN+
ROUT–
C16
C8
RIN–
C11
C12
GAIN1
C4
S1
SHUTDOWN
2000
TPA2001D2 EVM
SLOP315
C3
R2
C2
C1
C7
11
GAIN0
C6
R3
C5
LIN–
LIN+
R1
C10 C9
U1
SHUTDOWN
LOUT–
GND
C15
VDD
+
GND
GND
LOUT+
Table 2–4. Typical TPA2001D2 EVM Jumper Settings
GAIN1
GAIN0
OFF
OFF
8
OFF
ON
12
ON
OFF
17.5
ON
ON
23.5
Note:
GAIN (dB)
ON = Jumper installed, OFF = Open, X = Don’t care
Power Up
12) Verify correct voltage and input polarity and set the external power supply
to ON. If VCC and an onboard regulator EVM are used to provide VDD, set
platform power switch S1 to ON.
Platform LED2 should light indicating the presence of VDD, and the evaluation
modules installed on the platform should begin operation.
13) Adjust the signal source level as needed.
2-4
Operation
Quick Start List for Stand-Alone
2.3 Quick Start List for Stand-Alone
Follow these steps to use the TPA2001D2 EVM stand-alone or when
connecting it into existing circuits or equipment. Connections to the
TPA2001D2 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. Numbered callouts for selected steps are shown in
Figure 2–3.
Figure 2–3. Quick Start Module Map
2
+ VDD
ROUT+
GND
GND
4
GND
RIN+
C8
RIN–
C11
S1
SHUTDOWN
2000
TPA2001D2 EVM
SLOP315
C3
R2
C2
C1
C7
6
GAIN0
C6
R3
C5
LIN–
LIN+
GND
C12
GAIN1
C4
4
5
ROUT–
C16
R1
C10 C9
U1
SHUTDOWN
7
LOUT–
C15
VDD
+
GND
GND
5
LOUT+
Power supply
1) Ensure that all external power sources are set to OFF.
2) Connect an external regulated power supply set to 5 V to the module VDD
and GND pins taking care to observe marked polarity.
Inputs and outputs
3) Ensure that audio signal source level adjustments are set to minimum.
4) Connect the right (left) positive lead of the audio source to the module
RIN+ (LIN+) pins and the negative lead to the RIN– (LIN–) pins.
5) Connect the right (left) positive lead of the speaker to the module ROUT+
(LOUT+) pins and the negative lead to the ROUT– (LOUT–) pins.
Operation
2-5
Reference
Evaluation module preparations
6) Use jumpers GAIN0 and GAIN1 to set the gain as shown in Table 2–5.
Table 2–5. TPA2001D2 EVM Gain Settings
GAIN1
GAIN0
GAIN (dB)
OFF
OFF
8
OFF
ON
12
ON
OFF
17.5
ON
ON
23.5
Note:
ON = Jumper installed, OFF = Open, X = Don’t care
Control inputs
7) SHUTDOWN: A low shuts down the amplifier IC on the module; a high or
float allows normal operation.
Power up
8) Connect external power supply set to 5 V across the EVM VDD and GND
pins.
9) Verify correct voltage and input polarity and set the external power supply
to ON.
The EVM should begin operation.
10) Adjust the signal source level as needed.
2.4 Reference
2.4.1
TPA2001D2 EVM Connected for Stereo Output
Figure 2–4. TPA2001D2 EVM Connected for Stereo Output
+ VDD
Audio
Input
(Right)
ROUT+
GND
GND
GND
RIN+
ROUT–
C16
C8
RIN–
C11
S1
SHUTDOWN
GAIN0
C6
R3
LIN–
LIN+
GND
C7
C5
Audio
Input
(Left)
C3
R2
C2
C1
2000
C12
GAIN1
C4
TPA2001D2 EVM
SLOP315
Right
R1
C10 C9
U1
SHUTDOWN
External Shut
Down Control
(active low)
LOUT–
C15
VDD
+
GND
GND
Left
LOUT+
5V
2-6
Operation
TPA2001D2 Audio Power Amplifier Evaluation Module Parts List
2.4.2
TPA2001D2 Audio Power Amplifier Evaluation Module Parts List
Table 2–6. TPA2001D2 EVM Parts List
Description
Size
EVM
Qty.
C1–4,
C17–21
Capacitor, ceramic chip, 0.1 µF,
±10%, X7R, 50 V
0805
9
Kemet
C0805C104K5RAC
C5
Capacitor, ceramic, 1.0 µF,
80%/–20%, Y5V, 16 V
0805
1
Murata
GRM40-Y5V105Z16
C6, C8
Capacitor, ceramic, 10 µF,
80%/–20%, Y5V, 16 V
1210
2
Murata
GRM235-Y5V106Z16
C7
Capacitor, ceramic, 220 pF,
±10%, XICON, 50 V
0805
2
Mouser
140–CC501B221K
C9 – C12†
Not assembled
0805
C15, C16†
Not assembled
1210
C13, C14
Reference designators not used
R1 – R4
Resistor, chip, 120 kΩ, 1/10 W,
5%, XICON
0805
4
Mouser
260–120K
S1
Switch, momentary pushbutton,
12 V, 50 mA
0.291 × 0.138 × 0.134”
1
Panasonic
EVQ–PJS04K
GAIN0,
GAIN1
Header, 2 position
2 mm
2
Norcomp
DigiKey # 2163–02–ND
Shunts
2 mm
2
3M
Headers, 0.1 in centers, 1/2 in
long
0.5 × 0.25 × 0.1”
17
Samtec T
SW–19–8–G–S
U1
IC, TPA2001D2, audio power
amplifier, 2-W, 2-channel,
class-D
24 pin TSSOP
1
TI
TPA2001D2PWP
PCB
PCB, TPA2001D2 EVM
2.25 X 1.5”
1
TI
SLOP315
Reference
Manufacturer/
Part Number
† Capacitors C9 – C12, C15, and C16 are optional (not assembled) and pad locations for them on the EVM PCB have been
provided to increase design flexibility.
Operation
2-7
TPA2001D2 Filterless Class-D EVM Schematic
2.4.3
TPA2001D2 Filterless Class-D EVM Schematic
The TPA2001D2 filterless class-D EVM schematic is shown in Figure 2–5.
Figure 2–5. TPA2001D2 Class-D EVM Schematic Diagram
LOUT–
GND
1
C9†
2
R3
120 kΩ
C2
0.1 µF
C17
0.1 µF
R1
120 kΩ
3
4
PGND
PGND
LOUTN
LOUTP
GAIN0
BYPASS
LPVDD
LPVDD
5 LINN
LIN–
6
C3
0.1 µF
C7 220 pF
7
8
RIN–
C18 0.1 µF
RIN+
9
GND
AGND
COSC
RINN
RPVDD
LINP
VDD
24
23
C10†
21
20 C21 0.1 µF
C6 10 µF
VDD
R2
120 kΩ
C8
10 µF
16
15
SHUTDOWN GAIN1
C19 0.1 µF
14
11 ROUTN
ROUTP
10
C4
0.1 µF
12
S1
GND
C12†
PGND
PGND
VDD
19
18
ROSC
C20 0.1 µF
17
RINP
RPVDD
LOUT+
C5 1 µF
22
GAIN1
LIN+
U1
TPA2001D2
GAIN0
C1
0.1 µF
R4
120 kΩ
ROUT+
13
GND
C11†
+
C16†
+
C15†
GND
GND
SHUTDOWN
ROUT–
† Capacitors C9 – C12, C15, and C16 are optional (not assembled) and pad locations for them on the EVM PCB have been
provided to increase design flexibility.
2-8
Operation
TPA2001D2 Filterless Class-D EVM PCB Layers
2.4.4
TPA2001D2 Filterless Class-D EVM PCB Layers
The following illustrations depict the TPA2001D2 filterless class-D EVM PCB
assembly and layers. These drawings are not to scale. Gerber plots can be
obtained from any TI Sales Office.
Figure 2–6. TPA2001D2 Filterless Class-D EVM Top Assembly
Figure 2–7. TPA2001D2 FIlterless Class-D EVM Bottom Assembly
Operation
2-9
TPA2001D2 Filterless Class-D EVM PCB Layers
Figure 2–8. TPA2001D2 Filterless Class-D EVM Top Layer
Figure 2–9. TPA2001D2 Filterless Class-D EVM Bottom Layer
2-10
Operation
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