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Texas Instruments TPA6100A2EVM - User guides
User’s Guide
2000
Mixed-Signal Products
SLOU084
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
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 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
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright  2000, Texas Instruments Incorporated
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
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.
TPA6100A2 50-mW Stereo Audio Power Amplifier (literature
number SLOS269) This is the data sheet for the TPA6100A2 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
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3
TPA6100A2 EVM Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-1
1-2
1-3
1-3
2
Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2
Quick Start List for Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3
Quick Start List for Stand-Alone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4
Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.1 TPA6100A2 Filterless Class-D EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.2 TPA6100A2 Audio Power Amplifier Evaluation Module Parts List . . . . . . . . . .
2.4.3 TPA6100A2 EVM PCB Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1
2-2
2-3
2-4
2-5
2-5
2-6
2-7
Chapter Title—Attribute Reference
v
Running Title—Attribute Reference
Figures
1–1
2–1
2–2
2–3
2–4
2–5
The TI TPA6100A2 Audio Amplifier Evaluation Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Quick Start Platform Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Quick Start Module Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TPA6100A2 Class-D EVM Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TPA6100A2 EVM Top Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TPA6100A2 EVM Bottom Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3
2-2
2-4
2-5
2-7
2-7
Tables
2–1
2–2
vi
Typical TI Plug-N-Play Platform Jumper and Switch Settings for the
TPA6100A2 EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
TPA6100A2 EVM Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Chapter 1
Introduction
This chapter provides an overview of the Texas Instruments (TI) TPA6100A2
audio amplifier evaluation module (SLOP335). 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
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
1.3
TPA6100A2 EVM Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
Introduction
1-1
Features
1.1 Features
The TI TPA6100A2 audio amplifier evaluation module and the TI Plug-N-Play
audio amplifier evaluation platform include the following features:
TPA6100A2 Stereo Audio Power Amplifier Evaluation Module
1.6-V to 3.6-V operation
Dual channel, single-ended operation
50-mW output power into 16 Ω at 3.3 V
Very low distortion — THD+N is less than 0.04% at 1 kHz and less than
0.2% from 20 Hz to 20 kHz into 16-Ω loads, and less than 0.03% at 1
kHz and less than 0.2% from 20 Hz to 20 kHz into 32-Ω loads
Extremely low current consumption in shutdown mode
Internal thermal and short-circuit protection
Internal pop reduction circuitry
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
Onboard 9-V battery
External 5-V – 15-V (VCC) supply inputs
External regulated VDD supply input
Socket for onboard 5-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 TPA6100A2 audio power amplifier evaluation module is a complete,
low-power stereo audio power amplifier for high-fidelity line-level output,
headphone, and small speaker applications. It consists of the TI TPA6100A2
50-mW stereo audio power amplifier IC in a very small MSOP package, along
with a small number of other parts mounted on a circuit board that is
approximately one and a quarter inches square (see Figure 1–1).
Figure 1–1. The TI TPA6100A2 Audio Amplifier Evaluation Module
† Due to the very small size of the MSOP IC package, the standard part number TPA6100A2 is
replaced with the code TIAJL.
Single in-line header pins are mounted to 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 a single TPA6100A2 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 TPA6100A2 EVM Specifications
Supply voltage range, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 V to 3.6 V
Supply current, IDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 mA, max
Continuous output power, PO: 16 Ω, VDD = 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mW
Audio input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VDD + 0.3 Vpp, max
Minimum load impedance, RL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Ω
Introduction
1-3
1-4
Introduction
Chapter 2
Quick Start
The steps in this chapter can be followed to prepare the TPA6100A2 audio
amplifier EVM for use. Using the TPA6100A2 EVM 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 it can be
wired directly into existing circuits or equipment.
The platform switch and jumper settings shown in Table 2–1 are typical for the
TPA6100A2 EVM and will cause the TPA6100A2 IC to shutdown/mute when
a plug is removed from platform headphone jack J10.
Table 2–1. Typical TI Plug-N-Play Platform Jumper and Switch Settings for the
TPA6100A2 EVM
EVM
JP6
JP7
JP8
S2
S3
TPA6100A2
X
Lo
X
See Note 2
U5
Notes:
1) 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.
Topic
Page
2.1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
2.2
Quick Start List for Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–3
2.3
Quick Start List for Stand-Alone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
2.4
Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5
Quick Start
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
1 10
6b
C1+
On
Off
JP3
ICC
VR2
JP4
VR1
F2
U6
+
LED2
VDD
U2
U1
Left
Out
J5
Left
In
Stereo
Headphone
9
Output
HP Out
J10
5
Left
Out
2
+
R4
J9
+
S3
HP
Source
GND
R3
–
Hi
Spk(U2-U4) C3 C2
JP8
U5
U5
JP7
HP(U5)
U2-U4
Polarity
Lo
TP1
TEXAS
INSTRUMENTS
1997
3
Mode
Mute
JP6
U4
****CAUTION****
Do not insert or remove
EVM boards with power
applied
Plug-N-Play Audio Amplifier
Evaluation Platform
SLOP097 Rev. C.1
Speaker
Output
+
On
Conditioning
8
+ Right –
Out
U3
Off
S2
J4
Stereo
In
Audio
Input
6a
J8
J7 Right
Out
JP5
IDD
LED1
VCC
Audio
Power
Amps
DC
Power
In/Out
J6
VDD
In/Out
D1
D2
D3
J3
Right
In
R2
R1
Signal Conditioning
2-2
POWER
B1
SUPPLY
S1
Pwr
Batt
J1
D4 J2
AC/DC
In
6b
JP2 AC/DC
(J2)
JP1
VCC(J1)
DC
SOURCE
VCC
In
+
Power
Input
F1
7b
6b
R5
4
Quick Start
Quick Start List for Platform
2.2 Quick Start List for Platform
Follow these steps when using the TPA6100A2 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.
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 TPA6100A2 module in platform socket U5, 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 JP7 to Lo.
5) Set Hp source switch S3 to U5 to route the output signal to the headphone
Jack (J10).
Power supply
6) Select and connect the power supply:
a) Connect an external regulated power supply set to a voltage between
1.6 V and 3.6 V to platform VDD power input connector J6, taking care
to observe marked polarity,
or
b) Install a 3-V to 5-V voltage regulator EVM (SLVP097 or equiv.) in
platform socket U6. Install a 9-V battery in B1 or connect a 7-V to 12-V
power source to a platform VCC power input J1 or J2 and jumper the
appropriate power input (see platform user’s guide). Set jumper JP1
on the SLVP097 to 3.3-V operation.
Inputs and outputs
7) Ensure that signal source level is set to minimum and that potentiometers
R1 and R4 are set to the midpoint.
8) Connect the audio source to left and right RCA phono jacks J3 and J5 or
stereo miniature phone jack J4.
9) Connect 16-Ω to 32-Ω headphones to headphone jack J10.
Power-up
10) 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.
11) Adjust the signal source level and potentiometers R1 and R4 as needed.
Quick Start
2-3
Quick Start List for Stand-Alone
2.3 Quick Start List for Stand-Alone
Follow these steps to use the TPA6100A2 EVM stand-alone or when
connecting it into existing circuits or equipment. Connections to the
TPA6100A2 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 2–2.
Figure 2–2. Quick Start Module Map
2
5
4
6
6
4
† Due to the very small size of the MSOP IC package, the standard part number TPA6100A2 is
replaced with the code TIAJL.
Power supply
1) Ensure that all external power sources are set to OFF.
2) Connect an external regulated power supply set between 1.6 V and 3.3 V
to the module VDD and GND pins taking care to observe marked polarity.
Inputs and outputs
3) Ensure that signal source level is set to minimum and that potentiometers
R1 and R4 are set to the midpoint.
4) Connect the audio source to the module IN1, IN2, and GND pins taking
care to observe marked polarity.
5) Connect the shutdown pin to VDD through a normally open switch.
6) Connect 32-Ω headphones to the module VO1 and VO2 pins through
33-µF to 1000-µF output-coupling capacitors (see Figure 3 – 8) and return
to the GND pin, or
7) For line output, connections to the VO1 and VO2 pins must be made
through 33-µF to 1000-µF output-coupling capacitors and returned to
GND.
Power-up
8) Verify correct voltage and input polarity and set the external power supply
to ON.
The EVM should begin operation.
9) Adjust the signal source level and potentiometers R1 and R4 as needed.
2-4
Quick Start
TPA6100A2 EVM Schematic
2.4 Reference
2.4.1
TPA6100A2 EVM Schematic
The TPA6100A2 EVM schematic is shown in Figure 2–3.
Figure 2–3. TPA6100A2 EVM Schematic Diagram
C1
0.1 µF
R2
10 kΩ
RIN
R1
100 kΩ
R3
100 kΩ
1
8
BYPASS
IN1–
R7
100 kΩ
C3
1 µF
2
Vo1
7
ROUT
GND
TPA6100A2
3
C2
0.1 µF
R5
10 kΩ
LIN
R4
100 kΩ
SHUTDOWN
VDD
6
+
C4
0.1 µF
4
Vo2
IN2–
R6
100 kΩ
5
VDD
C5
10 µF
LOUT
R9
100 kΩ
R8
100 kΩ
S1
SHUTDOWN
Quick Start
2-5
TPA6100A2 Audio Power Amplifier Evaluation Module Parts List
2.4.2
TPA6100A2 Audio Power Amplifier Evaluation Module Parts List
Table 2–2. TPA6100A2 EVM Parts List
Ref.
Manufacturer/
Part Number
Description
Size
Qty.
C1, C2
Capacitor, 0.47 µF, ±10%,
Nonpolarized, SMD
0603
1
Panasonic
ECJ–1VB0J474K
Digi-Key
PCS1911CT-ND
C4
Capacitor, 0.1 µF, ±10%,
Nonpolarized, SMD
0603
1
Murat
GRM39X7R104K16
Arrow
GRM39X7R104K16
C3
Capacitor, 1 µF, ±10%,
Nonpolarized, SMD
0603
1
Murata
GRM39Y5V106Z010
Arrow
GRM39Y5V106Z010
C5
Capacitor, 10 µF, 6.3 V,
SMD
A
1
Panasonic
ECS–TOJY106R
Digi-Key
PCS1106CT-ND
R2, R5
Resistor, 10 kΩ, 1/16 W,
5%, SMD
0603
2
Panasonic
ERJ-3GSYJ103
Digi-Key
P10KGTR-ND
R3, R6,
R7, R8,
R9
Resistor, 100 kΩ, 1/16 W,
5%, SMD
0603
4
Panasonic
ERJ-3GSYJ104
Digi-Key
P100KGTR-ND
R1, R4
Potentiometer, 100 kΩ, 1/2
W, 20%, thru hole
2
Bourns
3314J–1–104E
Digi-Key
3314J–104ETR–ND
S1
(SHUTDOWN)
Switch, momentary, SMD
1
Panasonic
P8048SCT-ND
Digi-Key
P8048SCT-ND
U1
IC, TPA6100A2DGK APA,
50 mW, 2 channel
1
TI
TPA6100A2DGK
PnP Pins
Terminal post headers
11
Sullins
2-6
MSOP-8
Vendor/Number
Digi-Key
S1022-36-ND
Quick Start
TPA6100A2 EVM PCB Layers
2.4.3
TPA6100A2 EVM PCB Layers
The following illustrations depict the TPA6100A2 PCB layers. These drawings
are not to scale. Gerber plots can be obtained from any TI sales office.
Figure 2–4. TPA6100A2 EVM Top Layer
Figure 2–5. TPA6100A2 EVM Bottom Layer
Quick Start
2-7
2-8
Quick Start
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