Texas Instruments Stereo Amplifier TPA6110A2 MSOP User Manual

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User’s Guide  
2000  
Mixed-Signal Products  
SLOU085  
 
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
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.  
TPA6110A2 150-mW Stereo Audio Power Amplifier (literature  
number SLOS314) This is the data sheet for the TPA6110A2 audio  
amplifier integrated circuit.  
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  
 
Contents  
1
2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1  
1.1  
1.2  
1.3  
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2  
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3  
TPA6110A2 MSOP EVM Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3  
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
2.1  
2.2  
2.3  
2.4  
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
Quick Start List for Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3  
Quick Start List for Stand-Alone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5  
2.4.1 TPA6110A2 MSOP EVM Connected as a Stereo Headphone Amplifier . . . . . 2-5  
2.4.2 TPA6110A2 MSOP EVM Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5  
2.4.3 TPA6110A2 MSOP Audio Power Amplifier Evaluation Module Parts List . . . . 2-6  
2.4.4 TPA6110A2 EVM PCB Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6  
Figures  
1–1  
2–1  
2–2  
2–3  
2–4  
2–5  
2–6  
2–7  
2–8  
The TI TPA6110A2 Audio Amplifier Evaluation Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3  
Quick Start Platform Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2  
Quick Start Module Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
TPA6110A2 MSOP EVM Connected as a Stereo Headphone Amplifier . . . . . . . . . . . . . . . 2-5  
TPA6110A2 MSOP EVM Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5  
TPA6110A2 EVM PCB Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6  
TPA6110A2 EVM Silkscreen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7  
TPA6110A2 EVM PCB Top Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7  
TPA6110A2 EVM PCB Bottom Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7  
Tables  
2–1  
Typical TI Plug-N-Play Platform Jumper and Switch Settings for the  
TPA6110A2 MSOP EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
2–2  
2–3  
Platform Jumper and Switch Settings for the TPA6110A2 MSOP EVM . . . . . . . . . . . . . . . 2-3  
TPA6110A2 MSOP EVM Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6  
Contents  
v
 
vi  
 
Chapter 1  
Introduction  
This chapter provides an overview of the Texas Instruments (TI) TPA6110A2  
MSOP audio amplifier evaluation module (SLOP338). 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 TPA6110A2 MSOP EVM Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3  
1-1  
 
Features  
1.1 Features  
The TI TPA6110A2 MSOP audio amplifier evaluation module and the TI  
plug-n-play audio amplifier evaluation platform include the following features:  
- TPA6110A2 MSOP Stereo Audio Power Amplifier Evaluation Module  
J
J
J
J
Dual channel, single-ended operation  
150-mW output power into 8 at 5 V  
2.5-V to 5.5-V operation  
Very low distortion:  
H
H
H
THD+N is less than 0.01% at 1 kHz and less than 0.03% from 20  
Hz to 20 kHz into 10-kloads  
Lessthan0.02%at1kHzandlessthan0.4%from20Hzto20kHz  
into 32-loads  
Lessthan0.05%at1kHzandlessthan0.8%from20Hzto20kHz  
into 8-loads  
J
J
J
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  
J
Evaluation module is designed to simply plug into the platform,  
automatically making all signal, control, and power connections  
J
J
J
J
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  
J
J
J
J
J
Onboard 9-V battery  
External 5-V–15-V (V ) supply inputs  
CC  
External regulated V  
supply input  
DD  
Socket for on-board 5-V V  
voltage regulator EVM  
DD  
Onboard overvoltage and reverse polarity power protection  
- Platform Audio Input and Output Connections  
J
J
J
J
J
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  
1-2  
Introduction  
 
Description  
1.2 Description  
The TPA6110A2 MSOP 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  
TPA6110A2 150-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 (Figure 1–1).  
Figure 1–1. The TI TPA6110A2 Audio Amplifier Evaluation Module  
VDD GND  
C5  
Shutdown  
S1  
C3  
IN1  
GND  
R2  
R1  
R5  
Vo1  
C1  
GND  
U1  
C4  
C2 R3 R4  
TEXAS  
INSTRUMENTS  
GND  
Vo2  
IN2  
SLOP338  
GND  
TPA6110A2 MSOP EVM  
Due to the very small size of the MSOP IC package, the standard part number TPA6110A2 is  
replaced with the code TIAIZ.  
Single in-line header pins are mounted to the underside of the module circuit  
board; these pins 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 TPA6110A2 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,  
andconnectsthemtoaversatilearrayofstandardaudioinputandoutputjacks  
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 TPA6110A2 MSOP EVM Specifications  
Supply voltage range, V  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5 V to 5.5 V  
DD  
Supply current, I  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160 mA, max  
DD  
Continuous output power, P : 8 , V =5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mW  
O
DD  
Audio input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V  
+ 0.3 Vpp, max  
I
DD  
Minimum load impedance, R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ω  
L
1-3  
Introduction  
 
1-4  
Introduction  
 
Chapter 2  
Operation  
Follow the steps in this chapter to quickly prepare the TPA6110A2 MSOP  
audio amplifier EVM for use. The TPA6110A2 MSOP EVM and the TI  
plug-n-play audio amplifier evaluation platform provide 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  
TPA6110A2 MSOP EVM and will cause the TPA6110A2 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  
TPA6110A2 MSOP EVM  
EVM  
JP6  
JP7  
JP8  
S2  
S3  
TPA6110A2  
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 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–5  
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 V  
power input connector J1, J2, and/or V  
power  
CC  
DD  
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  
6b  
1
10  
6b  
ICC  
JP4  
C1+  
F1  
VR1  
DC  
Power  
In/Out  
6a  
Power  
Input  
6b  
R2  
R1  
Audio  
Power  
Amps  
Signal Conditioning  
Audio  
Input  
8
Speaker  
Output  
Mode  
Mute  
Polarity  
Lo  
****CAUTION****  
Do not insert or remove  
EVM boards with power  
applied  
Hi  
Stereo  
Headphone  
Output  
9
Plug-N-Play Audio Amplifier  
Evaluation Platform  
SLOP097 Rev. C.1  
HP Out  
R3  
R4  
R5  
3
2
4
5
2-2  
Operation  
 
Quick Start List for Platform  
2.2 Quick Start List for Platform  
Follow these steps when using the TPA6110A2 MSOP EVM with the TI  
plug-n-play audio amplifier evaluation platform (see the platform user’s guide,  
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 TPA6110A2 MSOP 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).  
Table 2–2. Platform Jumper and Switch Settings for the TPA6110A2 MSOP EVM  
EVM  
JP6  
JP7  
JP8  
S2  
S3  
TPA6110A2  
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.  
- Power supply  
6) Select and connect the power supply:  
a) Connect an external regulated power supply set to a voltage between  
2.5 V and 5.5 V to platform V power input connector J6, taking care  
DD  
to observe marked polarity, or  
b) Install 3-V to 5-V voltage regulator EVM (SLVP097 or equiv.) in plat-  
form socket U6. Install a 9-V battery in B1 or connect a 7 V – 12 V pow-  
er source to a platform V  
propriate power input (see platform user’s guide).  
power input J1 or J2 and jumper the ap-  
CC  
- Inputs and outputs  
7) Ensure that signal source level is set to minimum.  
8) Connect the audio source to left and right RCA phono jacks J3 and J5 or  
stereo miniature phone jack J4.  
9) Connect 32-headphones to headphone jack J10.  
- Power-up  
10) Verify correct voltage and input polarity and set the external power supply  
to ON. If V and an onboard regulator EVM are used to provide V , set  
CC  
DD  
platform power switch S1 to ON.  
Platform LED2 lights indicating the presence of V , and the evaluation  
DD  
modules installed on the platform begin operation.  
11) Adjust the signal source level as needed.  
2-3  
Operation  
 
Quick Start List for Stand-Alone  
2.3 Quick Start List for Stand-Alone  
Follow these steps to use the TPA6110A2 MSOP EVM stand-alone or when  
connecting it to existing circuits or equipment. Connections to the TPA6110A2  
MSOP 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 and details appear in Chapter 3.  
Figure 2–2. Quick Start Module Map  
2
VDD GND  
Shutdown  
R1  
S1  
C3  
C5  
5
4
IN1  
GND  
R2  
R5  
Vo1  
C1  
6
6
GND  
U1  
C4  
C2 R3 R4  
TEXAS  
INSTRUMENTS  
GND  
Vo2  
IN2  
SLOP338  
TPA6110A2 MSOP EVM  
4
GND  
Due to the very small size of the MSOP IC package, the standard part number TPA6110A2 is  
replaced with the code TIAIZ.  
- 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 V  
and GND pins, taking care to observe marked polarity.  
DD  
- Inputs and outputs  
3) Ensure that the signal source level is set to minimum.  
4) Connect the audio source to the module IN1, IN2, and GND pins, taking  
care to observe marked polarity.  
5) Connect the shutdown (S1) pin to V  
through a normally open switch.  
DD  
6) Connect 32-headphones to the module V , and V pins through 33  
O1  
O2  
µF to 1000 µF output-coupling capacitors (see Figure 23) and return to  
the GND pin, or  
7) For line output, connections to the V  
and V  
pins must be made  
O2  
O1  
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 as needed.  
2-4  
Operation  
 
References  
2.4 References  
2.4.1 TPA6110A2 MSOP EVM Connected as a Stereo Headphone Amplifier  
Figure 2–3. TPA6110A2 MSOP EVM Connected as a Stereo Headphone Amplifier  
5 VDC  
VDD  
R2  
GND  
C5  
Shutdown  
R1  
Shutdown  
Audio Input  
NO  
S1  
C3  
IN1  
GND  
(Right)  
R5  
Vo1  
C1  
+
+
GND  
U1  
33 µF – 1000 µF  
C4  
C2 R3 R4  
TEXAS  
33 µF – 1000 µF  
INSTRUMENTS  
GND  
Vo2  
Audio Input  
(Left)  
IN2  
SLOP338  
GND  
TPA6110A2 MSOP EVM  
Due to the very small size of the MSOP IC package, the standard part number TPA6110A2 is replaced with the code TIAIZ.  
2.4.2 TPA6110A2 MSOP EVM Schematic Diagram  
Figure 2–4. TPA6110A2 MSOP EVM Schematic Diagram  
Audio Input 1  
R2  
C3  
1 µF  
8
7
1
20 kΩ  
Bypass  
IN 1  
Vo1  
C1  
R5  
82 kΩ  
1 µF  
S1  
Vo1  
2
3
GND  
TPA6110A2  
MSOP  
V
DD  
V
DD  
SHUTDOWN  
R1  
Shutdown  
(V to  
Shutdown)  
2 to 5.5 V  
6
5
C5  
10 µF  
+
C4  
1 µF  
Shutdown  
IN 2  
V
DD  
DD  
GND  
Vo2  
82 kΩ  
4
C2  
1 µF  
R3  
Vo2  
20 kΩ  
Audio Input 2  
R4, 82 kΩ  
2-5  
Operation  
 
TPA6110A2 MSOP Audio Power Amplifier Evaluation Module Parts List  
2.4.3 TPA6110A2 MSOP Audio Power Amplifier Evaluation Module Parts List  
Table 2–3.TPA6110A2 MSOP EVM Parts List  
Manufacturer/  
Part Number  
Ref.  
R2, R3  
Description  
Size  
Qty.  
Vendor/Number  
Digi-Key  
Resistor, 20 k, 1/16  
W, 5%, SMD  
0603  
3
Panasonic  
ERJ-3GSYJ203  
P20PGCT–ND  
R1, R4, R5  
C1–C4  
Resistor, 82 k, 1/16  
0603  
0603  
2
4
Panasonic  
ERJ-3GSYJ823  
Digi-Key  
P82KGCT–ND  
W, 5%, SMD  
Capacitor, 1 µF,  
+20/–80%,  
Murata  
GRM39-Y5V105Z10  
Newark  
Non-polarized, SMD  
C5  
S1  
Capacitor, 10 µF, 6.3 V,  
A
1
1
Panasonic  
ECS-TOJY106R  
Digi-Key  
PCS1106CT-ND  
SMD  
Switch, momentary  
Panasonic  
Digi-Key  
(SHUTDOWN) SMD  
P8048SCT-ND  
P8048SCT-ND  
U1  
IC, TPA6110A2, APA,  
MSOP-8  
1
TI  
150 mW, 2 channel  
TPA6110A2DGN  
PNP Pins  
Terminal post headers  
11  
Sullins  
Digi-Key  
S1022-36-ND  
The following illustrations depict the TPA6110A2 EVM PCB layers and silks-  
creen. These drawings are not to scale. Gerber plots can be obtained from any  
TI sales office.  
2.4.4 TPA6110A2 EVM PCB Layers  
Figure 2–5. TPA6110A2 EVM PCB Layers  
2-6  
Operation  
 
TPA6110A2 EVM PCB Layers  
Figure 2–6. TPA6110A2 EVM Silkscreen  
Figure 2–7. TPA6110A2 EVM PCB Top Layer  
Figure 2–8. TPA6110A2 EVM PCB Bottom Layer  
2-7  
Operation  
 
2-8  
Operation  
 

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