Texas Instruments | TPA2000D1EVM - (Rev. A) | User Guides | Texas Instruments TPA2000D1EVM - (Rev. A) User guides

Texas Instruments TPA2000D1EVM - (Rev. A) User guides
User’s Guide
2001
Mixed-Signal Products
SLOU083A
Information About Cautions and Warnings
Preface
Read This First
Information About Cautions and Warnings
This book may contain cautions and warnings.
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.
Related Documentation From Texas Instruments
J
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.
J
TPA2000D1 2-W Mono Class-D Audio Power Amplifier
(literature number SLOS328) This is the data sheet for the
TPA2000D1 audio amplifier integrated circuit.
Read This First
iii
Running Title—Attribute Reference
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.
iv
Running Title—Attribute Reference
Contents
1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1
Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3
TPA2000D1 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 TPA2000D1 Filterless Class-D EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.2 TPA2000D1 Audio Power Amplifier Evaluation Module Parts List . . . . . . . . . .
2.4.3 TPA2000D1 Filterless Class-D EVM PCB Layers . . . . . . . . . . . . . . . . . . . . . . . .
2-1
2-2
2-3
2-5
2-7
2-7
2-8
2-9
Figures
1–1
2–1
2–2
2–3
2–4
2–5
2–6
The TI TPA2000D1 Audio Amplifier EVM Without Output Filter—Top View . . . . . . . . . . . .
Quick Start Platform Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Module Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Quick Start Module Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TPA2000D1 Class-D EVM Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TPA2000D1 Filterless Class-D EVM Top Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TPA2000D1 FIlterless Class-D EVM Bottom Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3
2-2
2-4
2-5
2-7
2-9
2-9
Tables
2–1
2–2
2–3
2–4
2–5
2–6
Typical TI Plug-N-Play Platform Jumper and Switch Settings for the TPA2000D1 . . . . . .
Typical TPA2000D1 EVM Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Platform Jumper and Switch Settings for the TPA2000D1 . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical TPA2000D1 EVM Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TPA2000D1 EVM Gain Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TPA2000D1 EVM Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents
2-1
2-1
2-3
2-4
2-6
2-8
v
vi
Chapter 1
Introduction
This chapter provides an overview of the Texas Instruments (TI) TPA2000D1
filterless class-D audio amplifier evaluation module (SLOU083). 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
TPA2000D1 EVM Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
Introduction
1-1
Feature Highlights
1.1 Feature Highlights
The TI TPA2000D1 audio amplifier evaluation module and the TI plug-n-play
audio amplifier evaluation platform include the following features:
- TPA2000D1 Mono 2-W Filterless Class-D Audio Power Amplifier
Evaluation Module
J
Class-D without output filter
J
2.7 V to 5.5 V supply voltage range
J
Internal depop circuitry to minimize transients in outputs
J
High efficiency
J
Low distortion
J
Low-supply current (5 mA)
J
2-W output power into 4 Ω at 5 V
J
Low current consumption in shutdown mode
J
Four selectable gain settings: 6, 12, 17.5, and 23.5 dB
J
Differential stereo input
J
16-pin TSSOP PWP package
- Quick and Easy Configuration With the TI Plug-N-Play Audio Amplifier
Evaluation Platform
J
Evaluation module is designed to simply plug into the platform,
automatically making all signal, control, and power connections.
J
Platform provides flexible power options
J
Jumpers on the platform select power and module control options
J
Switches on the platform route signals
J
Platform provides quick and easy audio input and output connections
- Platform Power Options
J
External 5-V – 15-V dc VCC supply inputs
J
External regulated VDD supply input
J
Socket for onboard 5 V/3.3 V VDD voltage regulator EVM
J
Onboard overvoltage and reverse polarity power protection
- Platform Audio Input and Output Connections
1-2
J
Left and right RCA phono jack inputs
J
Miniature stereo phone jack input
J
Left and right RCA phono jack outputs
J
Left and right compression speaker terminal outputs
J
Miniature stereo headphone jack output
Introduction
Description
1.2 Description
The TPA2000D1 filterless class-D mono audio power amplifier evaluation
module is a complete, 2-W class-D audio power amplifier that can operate
without an output filter. It consists of the TI TPA2000D1 class-D mono 2-W
audio power amplifier IC along with a small number of other parts mounted on
a circuit board that measures approximately 1-1/4 inches by 1-1/4 inches (see
Figure 1–1.
Figure 1–1. The TI TPA2000D1 Audio Amplifier EVM Without Output Filter—Top View
VDD
TEXAS
INSTRUMENTS
TPA2000D1 EVM
SHUTDOWN
SLOP327
GND
C8
C5
C6
OUT+
R1
S1 C1
C7
GND
U1
C2
IN+
IN–
R2 R3
OUT–
C4
C3
GAIN0
J1
R4
GAIN1
J2
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.
The platform has room for two TPA2000D1 evaluation modules 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.
Introduction
1-3
TPA2000D1 EVM Specifications
1.3 TPA2000D1 EVM Specifications
Supply voltage range, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7 V to 5.5 V
Supply current, IDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 A max
Continuous output power per channel, PO: 4 Ω, VDD = 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 W
Minimum load impedance, RL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Ω
1-4
Introduction
Chapter 2
Operation
The steps in this chapter can be followed to quickly prepare the TPA2000D1
filterless class-D audio amplifier EVM for use. Using the TPA2000D1 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
TPA2000D1 EVM and will cause the TPA2000D1 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
TPA2000D1
EVM
JP4
JP5
JP6
JP7
JP8
S2
S3
P-N-P Platform
X
ON
Mute
X
Lo
See 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 TPA2000D1 EVM Jumper Settings
Note:
EVM
GAIN0
GAIN1
TPA2000D1
ON
ON
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–7
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 13
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 TPA2000D1 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 TPA2000D1 module in platform socket U3 or U4, 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 TPA2000D1
to shut down if a plug is inserted into platform headphone jack J10).
6) If a headphone amplifier will be installed in U5, set the headphone source
switch S3 to U5.
Table 2–3. Platform Jumper and Switch Settings for the TPA2000D1
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 or right RCA phono jacks J3 or J5 or
stereo miniature phone jack J4.
10) Connect a speaker to left or right RCA jacks J7 or 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 (see Figure 2–2 and
Table 2–4).
Figure 2–2. Module Preparation
VDD
TEXAS
INSTRUMENTS
TPA2000D1 EVM
SHUTDOWN
SLOP327
GND
C8
C5
C6
OUT+
R1
S1 C1
C7
GND
U1
OUT–
C2
R2 R3
IN+
IN–
C4
C3
R4
GAIN0
J1
GAIN1
11
J2
Table 2–4. Typical TPA2000D1 EVM Jumper Settings
GAIN1
GAIN0
GAIN (dB)
ON
ON
6
ON
OF
12
OFF
ON
17.5
OFF
OFF
23.5
Note:
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 TPA2000D1 EVM stand-alone or when
connecting it into existing circuits or equipment. Connections to the
TPA2000D1 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
VDD
TEXAS
INSTRUMENTS
TPA2000D1 EVM
SHUTDOWN
SLOP327
GND
C8
C5
C6
OUT+
R1
S1 C1
C7
GND
U1
C2
IN+
R2 R3
IN–
OUT–
C4
C3
GAIN0
R4
J1
GAIN1
1
J2
- 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 positive lead of the audio source to the module IN+ pins and
the negative lead to the IN– pin.
5) Connect a speaker to OUT+ and OUT–.
- Evaluation module preparations
6) Use jumpers GAIN0 and GAIN1 to set the gain as shown in Table 2–5.
Operation
2-5
Quick Start List for Stand-Alone
Table 2–5. TPA2000D1 EVM Gain Settings
GAIN1
GAIN0
GAIN (dB)
ON
ON
6
ON
OF
12
OFF
ON
17.5
OFF
OFF
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
allows normal operation.
- Power up
8) Connect external power supply set to 5 V across 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.
2-6
Operation
Reference
2.4 Reference
2.4.1
TPA2000D1 Filterless Class-D EVM Schematic
The TPA2000D1 filterless class-D EVM schematic is shown in Figure 2–4.
Figure 2–4. TPA2000D1 Class-D EVM Schematic Diagram
OUT–
C2
IN–
C3
1 µF
IN+
1 µF
SHUTDOWN
R3
120 kΩ
R4
120 kΩ
1 INP
2
C8
10 µF
C4
1 µF
15
C7
1 µF
C1
4 GAIN0
13 220 pF
7
R2
120 kΩ
AGND
16
14
6
J2
INN
BYPASS
3 SHUTDOWN
COSC
5
J1
VDD
U1
TPA2000D1
8
GAIN1
ROSC
VDD
PVDD
PVDD
OUTP
OUTN
GNDP
GNDN
12
11
R1
120 kΩ
VDD
C6
1 µF
10
9
OUT+
C5
1 µF
S1
GND
GND
Operation
2-7
TPA2000D1 Audio Power Amplifier Evaluation Module Parts List
2.4.2
TPA2000D1 Audio Power Amplifier Evaluation Module Parts List
Table 2–6. TPA2000D1 EVM Parts List
Description
Size
EVM
Qty.
C1
Capacitor, ceramic, 220 pF, ±5%,
X7R, 50 V
603
1
Phillips
06032R221K9B20D
C2–7
Capacitor, ceramic, 1.0 µF,
80%/–20%, Y5V, 16 V
603
6
Panasonic
ECJ–1VF1A105Z
C8
Capacitor, ceramic, 10 µF,
80%/–20%, Y5V, 16 V
1210
1
Murata
GRM235-Y5V106Z16
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 x 0.138 x
0.134”
1
Panasonic
EVQ–PJS04K
J1, J2
Header, 2 position
2 mm
2
Norcomp
2163–02–ND(Digi–Key)
Shunts
2 mm
2
3M
2163–02–ND(Digi–Key)
Headers, 0.100 inch centers, 1/2
length, 0.1 inch center
0.5”, 0.25”, 0.1”
8
Samtec
TSW–19–8–G–S
U1
IC, 2 W, class–D audio power
amp
16-pin TSSOP
1
TI
TPA2000D1PW
PCB
PCB, 2 layer, 1.32”(L) x 1.22”(W)
x 0.062”(T) fits U3 on PnP
1
TI
SLOP327
Reference
2-8
Manufacturer/
Part Number
Operation
TPA2000D1 Filterless Class-D EVM PCB Layers
2.4.3
TPA2000D1 Filterless Class-D EVM PCB Layers
The following illustrations depict the TPA2000D1 filterless class-D EVM PCB
layers. These drawings are not to scale. Gerber plots can be obtained from any
TI sales office.
Figure 2–5. TPA2000D1 Filterless Class-D EVM Top Layer
VDD
TEXAS
INSTRUMENTS
TPA2000D1 EVM
SHUTDOWN
SLOP327
GND
C8
C5
C6
OUT+
R1
S1 C1
C7
GND
U1
C2
IN+
IN–
R2 R3
OUT–
C4
C3
GAIN0
J1
R4
GAIN1
J2
Figure 2–6. TPA2000D1 Filterless Class-D EVM Bottom Layer (Top View)
Operation
2-9
2-10
Operation
IMPORTANT NOTICE
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or to discontinue any product or service without notice, and advise customers to obtain the latest
version of relevant information to verify, before placing orders, that information being relied on
is current and complete. All products are sold subject to the terms and conditions of sale supplied
at the time of order acknowledgment, including those pertaining to warranty, patent infringement,
and limitation of liability.
TI warrants performance of its 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,
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