User’s Guide
2000 Mixed-Signal Products
SLOU084
IMPORTANT NOTICE
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accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
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Copyright 2000, Texas Instruments Incorporated
Information About Cautions and Warnings
This book may contain cautions and warnings.
This is an example of a caution statement.
Information About Cautions and Warnings
Preface
Read This First
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
number SLOU011) provides detailed information on the evaluation
platform and its use with TI audio evaluation modules.
TPA6100A2 50-mW Stereo Audio Power Amplifier
number SLOS269) This is the data sheet for the TPA6100A2 audio
amplifier integrated circuit.
(literature
(literature
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Description 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 TP A6100A2 EVM Specifications 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Quick Start 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.1 TPA6100A2 Filterless Class-D EVM Schematic 2-5. . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.2 TPA6100A2 Audio Power Amplifier Evaluation Module Parts List 2-6. . . . . . . . . .
2.4.3 TPA6100A2 EVM PCB Layers 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter Title—Attribute Reference
v
Running Title—Attribute Reference
Figures
1–1 The TI TPA6100A2 Audio Amplifier Evaluation Module 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–1 Quick Start Platform Map 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2 Quick Start Module Map 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 TPA6100A2 Class-D EVM Schematic Diagram 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–4 TPA6100A2 EVM T op Layer 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–5 TPA6100A2 EVM Bottom Layer 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ables
2–1 Typical TI Plug-N-Play Platform Jumper and Switch Settings for the
TP A6100A2 EVM 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2 TPA6100A2 EVM Parts List 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi
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 TP A6100A2 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
V ery 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 (V
External regulated V
Socket for onboard 5-V V
Onboard overvoltage and reverse polarity power protection
Platform Audio Input and Output Connections
Left and right RCA phono jack inputs
Miniature stereo phone jack input
Left and right RCA phono jack outputs
) supply inputs
CC
supply input
DD
voltage regulator EVM
DD
Left and right compression speaker terminal outputs
Miniature stereo headphone jack output
1-2
Introduction
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 TP A6100A2
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
Description
†
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, V
Supply current, I
DD
Continuous output power, P
Audio input voltage, V
Minimum load impedance, R
DD
: 16 Ω, V
O
I
L
DD
1.6 V to 3.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
160 mA, max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
= 3.3 V 50 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VDD + 0.3 Vpp, max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 T able 2–1 are typical for the
TP A6100A2 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
TP A6100A2 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.
T opic 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.
Power
Input
6b
Audio
Input
8
Figure 2–1.
SOURCE
VCC
J1
In
+
D4
AC/DC
In
J2
Right
In
Stereo
In
Left
In
1997
Quick Start Platform Map
6b
JP3
JP2
JP1
DC
VCC(J1)
AC/DC
(J2)
Batt
D1
D2
D3
J3
Signal Conditioning
J4
J5
****CAUTION****
Do not insert or remove
EVM boards with power
TEXAS
INSTRUMENTS
Plug-N-Play Audio Amplifier
Evaluation Platform
SLOP097 Rev. C.1
VR1
F1
LED1
VCC
applied
C1+
R1
U1
110
Off Pwr
ConditioningS2
GND
On
S1
Audio
Power
Amps
OnOff
TP1
ICC
JP4
B1
IDD
U5
JP5
6b
U3 U4
R2
U2-U4
U5
HP
Source
SUPPLY
U2
HP(U5)
S3
R3
R4
POWER
LED2
VDD
JP6
Polarity
Lo
Hi
JP7
+
+
7b
U6
Out
Mode
Mute
Spk(U2-U4)
JP8
C3 C2
HP Out
J7
Right
Out
Out
J9
Out
Stereo
VR2
F2
+
J6
In/Out
VDD
J8
+–+–
Right
Left
Left
Headphone
Output
J10
R5
DC
Power
In/Out
Speaker
Output
6a
9
3
2-2
2
4
5
Quick Start
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
power switch S1 is set to
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).
OFF.
Quick Start List for Platform
OFF
and that the platform
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 V
power input connector J6, taking care
DD
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.
1 1) 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
5
4
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
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
2
6
6
OFF
.
2-4
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
The EVM should begin operation.
9) Adjust the signal source level and potentiometers R1 and R4 as needed.
ON.
Quick Start
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
RIN
R1
100 kΩ
R2
10 kΩ
R3
100 kΩ
C3
1 µF
1
2
BYPASS
GND
TPA6100A2
IN1–
Vo1
TPA6100A2 EVM Schematic
8
R7
7
100 kΩ
ROUT
LIN
C2
0.1 µF
R4
100 kΩ
R5
10 kΩ
100 kΩ
R6
3
SHUTDOWN
4
IN2–
R8
100 kΩ
V
Vo2
DD
6
+
C4
0.1 µF
5
R9
100 kΩ
S1
SHUTDOWN
C5
10 µF
V
DD
LOUT
Quick Start
2-5
TP A6100A2 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. Description Size Qty.
C1, C2 Capacitor, 0.47 µF, ±10%,
Nonpolarized, SMD
C4 Capacitor, 0.1 µF, ±10%,
Nonpolarized, SMD
C3 Capacitor, 1 µF, ±10%,
Nonpolarized, SMD
C5 Capacitor, 10 µF, 6.3 V,
SMD
R2, R5 Resistor, 10 kΩ, 1/16 W,
5%, SMD
R3, R6,
R7, R8,
R9
R1, R4 Potentiometer, 100 kΩ, 1/2
S1
(SHUTDOWN)
U1 IC, TPA6100A2DGK APA,
PnP Pins Terminal post headers 11 Sullins Digi-Key
Resistor, 100 kΩ, 1/16 W,
5%, SMD
W, 20%, thru hole
Switch, momentary , SMD 1 Panasonic
50 mW, 2 channel
0603 1 Panasonic
0603 1 Murat
0603 1 Murata
A 1 Panasonic
0603 2 Panasonic
0603 4 Panasonic
2 Bourns
MSOP-8 1 TI
Manufacturer/
Part Number
ECJ–1VB0J474K
GRM39X7R104K16
GRM39Y5V106Z010
ECS–TOJY106R
ERJ-3GSYJ103
ERJ-3GSYJ104
3314J–1–104E
P8048SCT-ND
TPA6100A2DGK
Vendor/Number
Digi-Key
PCS1911CT-ND
Arrow
GRM39X7R104K16
Arrow
GRM39Y5V106Z010
Digi-Key
PCS1106CT-ND
Digi-Key
P10KGTR-ND
Digi-Key
P100KGTR-ND
Digi-Key
3314J–104ETR–ND
Digi-Key
P8048SCT-ND
S1022-36-ND
2-6
Quick Start
2.4.3 TPA6100A2 EVM PCB Layers
The following illustrations depict the TP A6100A2 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
TPA6100A2 EVM PCB Layers
Figure 2–5.TPA6100A2 EVM Bottom Layer
Quick Start
2-7
2-8
Quick Start
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