TPA6205A1NMBR [TI]

TPA6205A1 1.25-W Mono Fully Differential Audio Power Amplifier With 1.8-V Input logic Thresholds;
TPA6205A1NMBR
型号: TPA6205A1NMBR
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

TPA6205A1 1.25-W Mono Fully Differential Audio Power Amplifier With 1.8-V Input logic Thresholds

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SLOS490TPA6205A1  
SLOS490C JULY 2006REVISED NOVEMBER 2015  
TPA6205A1 1.25-W Mono Fully Differential Audio Power Amplifier  
With 1.8-V Input logic Thresholds  
1 Features  
3 Description  
The TPA6205A1 device is a 1.25-W mono fully  
1
1.25 W Into 8-Ω From a 5-V Supply at THD = 1%  
differential amplifier designed to drive a speaker with  
at least 8-Ω impedance while consuming less than 37  
mm2 (ZQV package option) total printed-circuit-board  
(PCB) area in most applications. This device operates  
from 2.5 V to 5.5 V, drawing only 1.7 mA of quiescent  
supply current. The TPA6205A1 is available in the  
space-saving 2-mm × 2-mm MicroStar Junior BGA  
package, and the space saving 3-mm × 3-mm QFN  
(DRB) package.  
(Typical)  
Shutdown Pin has 1.8-V Compatible Thresholds  
Low Supply Current: 1.7 mA Typical  
Shutdown Current < 10 µA  
Only Five External Components  
Improved PSRR (90 dB) and Wide Supply  
Voltage (2.5 V to 5.5 V) for Direct Battery  
Operation  
Features like 85-dB PSRR from 90 Hz to 5 kHz,  
improved RF-rectification immunity, and small PCB  
area makes the TPA6205A1 ideal for wireless  
handsets. A fast start-up time of 4s with minimal pop  
makes the TPA6205A1 ideal for PDA applications.  
Fully Differential Design Reduces RF  
Rectification  
Improved CMRR Eliminates Two Input  
Coupling Capacitors  
C(BYPASS) Is Optional Due to Fully Differential  
Design and High PSRR  
Device Information(1)  
PART NUMBER  
PACKAGE  
BODY SIZE (NOM)  
Available in 3-mm × 3-mm QFN Package (DRB)  
Available in an 8-Pin PowerPAD™ MSOP (DGN)  
MSOP-PowerPAD (8) 3.00 mm × 3.00 mm  
SON (8)  
3.00 mm × 3.00 mm  
2.00 mm × 2.00 mm  
TPA6205A1  
Available in a 2-mm × 2-mm MicroStar Junior™  
BGA Package (ZQV)  
BGA MICROSTAR  
JUNIOR (8)  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
2 Applications  
Designed for Wireless Handsets, PDAs, and  
Other Mobile Devices  
Compatible With Low Power (1.8-V Logic) I/O  
Threshold Control Signals  
Application Circuit  
Example Solution Size  
Actual Solution Size  
V
DD  
R
F
R
F
To Battery  
C
s
R
I
-
C
IN-  
S
V
_
+
(1)  
C
O+  
B
In From  
DAC  
5,25 mm  
R
I
V
O-  
+
IN+  
R
I
R
F
GND  
R
I
SHUTDOWN  
C BYPASS  
Bias  
Circuitry  
R
F
(
)
(Optional)  
6,9 mm  
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 
 
SLOS490TPA6205A1  
SLOS490C JULY 2006REVISED NOVEMBER 2015  
www.ti.com  
Table of Contents  
9.2 Functional Block Diagram ....................................... 11  
9.3 Feature Description................................................. 11  
9.4 Device Functional Modes........................................ 15  
10 Application and Implementation........................ 18  
10.1 Application Information.......................................... 18  
10.2 Typical Applications .............................................. 18  
11 Power Supply Recommendations ..................... 22  
11.1 Power Supply Decoupling Capacitors.................. 22  
12 Layout................................................................... 23  
12.1 Layout Guidelines ................................................. 23  
12.2 Layout Example .................................................... 24  
13 Device and Documentation Support ................. 26  
13.1 Community Resources.......................................... 26  
13.2 Trademarks........................................................... 26  
13.3 Electrostatic Discharge Caution............................ 26  
13.4 Glossary................................................................ 26  
1
2
3
4
5
6
7
Features.................................................................. 1  
Applications ........................................................... 1  
Description ............................................................. 1  
Revision History..................................................... 2  
Device Comparison Table..................................... 3  
Pin Configuration and Functions......................... 3  
Specifications......................................................... 4  
7.1 Absolute Maximum Ratings ...................................... 4  
7.2 ESD Ratings.............................................................. 4  
7.3 Recommended Operating Conditions....................... 4  
7.4 Thermal Information.................................................. 4  
7.5 Electrical Characteristics........................................... 5  
7.6 Operating Characteristics.......................................... 5  
7.7 Dissipation Ratings ................................................... 6  
7.8 Typical Characteristics.............................................. 6  
Parameter Measurement Information ................ 11  
Detailed Description ............................................ 11  
9.1 Overview ................................................................. 11  
8
9
14 Mechanical, Packaging, and Orderable  
Information ........................................................... 26  
4 Revision History  
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.  
Changes from Revision B (June 2008) to Revision C  
Page  
Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional  
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device  
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1  
Removed Ordering Information table .................................................................................................................................... 1  
2
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Product Folder Links: SLOS490TPA6205A1  
 
SLOS490TPA6205A1  
www.ti.com  
SLOS490C JULY 2006REVISED NOVEMBER 2015  
5 Device Comparison Table  
DEVICE NUMBER  
SPEAKER  
CHANNELS  
SPEAKER AMP  
TYPE  
OUTPUT POWER (W)  
PSRR (dB)  
TPA6203A1  
TPA6204A1  
Mono  
Class AB  
Class AB  
Class AB  
Class AB  
1.25  
1.7  
90  
85  
90  
85  
Mono  
TPA6205A1 (1.8-V comp SD)  
TPA6211A1  
Mono  
1.25  
3.1  
Mono  
6 Pin Configuration and Functions  
ZQV Package  
8-Pin BGA MICROSTAR JUNIOR  
Top View  
DRB Package  
8-Pin SON  
Top View  
GND  
1 2  
3
A
B
C
1
2
3
4
8
SHUTDOWN  
BYPASS  
IN+  
V
V
V
O-  
V
DD  
O+  
O-  
SHUTDOWN  
BYPASS  
7
GND  
IN-  
6
5
V
DD  
V
O+  
IN+  
(SIDE VIEW)  
IN-  
DGN Package  
8-Pin MSOP-PowerPAD  
Top View  
V
8
SHUTDOWN  
BYPASS  
IN+  
1
O-  
GND  
7
6
5
2
3
4
V
DD  
IN-  
V
O+  
Pin Functions  
PIN  
I/O  
DESCRIPTION  
BGA MICROSTAR  
JUNIOR  
SON,  
MSOP-PowerPAD  
NAME  
BYPASS  
GND  
C1  
B2  
C3  
C2  
B1  
A3  
B3  
A1  
2
7
4
3
1
6
5
8
I
I
Mid-supply voltage. Adding a bypass capacitor improves PSRR.  
High-current ground  
IN–  
I
Negative differential input  
IN+  
I
Positive differential input  
SHUTDOWN  
VDD  
I
Shutdown terminal (active low logic)  
Supply voltage terminal  
I
VO+  
O
O
Positive BTL output  
VO–  
Negative BTL output  
Connect to ground. Thermal pad must be soldered down in all  
applications to properly secure device on the PCB.  
Thermal Pad  
N/A  
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SLOS490C JULY 2006REVISED NOVEMBER 2015  
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7 Specifications  
7.1 Absolute Maximum Ratings  
over operating free-air temperature range (unless otherwise noted)(1)  
MIN  
–0.3  
–0.3  
MAX  
6
UNIT  
V
VDD  
VI  
Supply voltage  
Input voltage  
INx and SHUTDOWN pins  
0.3  
V
See Dissipation  
Continuous total power dissipation  
Ratings  
TA  
TJ  
Operating free-air temperature  
Junction temperature  
–40  
–40  
85  
ºC  
ºC  
125  
Lead temperature 1.6 mm (1/16 inch) from  
case for 10 seconds  
ZQV, DRB, DGN  
260  
150  
ºC  
°C  
Tstg  
Storage temperature  
–65  
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings  
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended  
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
7.2 ESD Ratings  
VALUE  
UNIT  
Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1)  
±4000  
V(ESD)  
Electrostatic discharge  
V
Charged-device model (CDM), per JEDEC specification JESD22-  
C101(2)  
±1500  
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.  
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.  
7.3 Recommended Operating Conditions  
over operating free-air temperature range (unless otherwise noted)  
MIN  
2.5  
NOM  
MAX  
UNIT  
V
VDD  
VIH  
VIL  
VIC  
TA  
Supply voltage  
5.5  
High-level input voltage  
Low-level input voltage  
Common-mode input voltage  
Operating free-air temperature  
Load impedance  
SHUTDOWN  
1.15  
V
SHUTDOWN  
0.5  
VDD–0.8  
85  
V
VDD = 2.5 V, 5.5 V, CMRR –60 dB  
0.5  
–40  
6.4  
V
°C  
Ω
ZL  
8
7.4 Thermal Information  
TPA6205A1  
BGA MICROSTAR  
JUNIOR  
MSOP  
THERMAL METRIC(1)  
SON  
UNIT  
PowerPAD  
8 PINS  
109.5  
67.8  
8 PINS  
8 PINS  
57.3  
84.0  
32.2  
3.7  
RθJA  
Junction-to-ambient thermal resistance  
134.4  
°C/W  
°C/W  
°C/W  
°C/W  
°C/W  
°C/W  
RθJC(top)  
RθJB  
Junction-to-case (top) thermal resistance  
Junction-to-board thermal resistance  
79.8  
71.1  
5.3  
47.6  
ψJT  
Junction-to-top characterization parameter  
Junction-to-board characterization parameter  
Junction-to-case (bottom) thermal resistance  
4.7  
ψJB  
71.0  
32.2  
11.8  
47.2  
RθJC(bot)  
15.9  
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application  
report, SPRA953.  
4
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SLOS490C JULY 2006REVISED NOVEMBER 2015  
7.5 Electrical Characteristics  
over operating free-air temperature range (unless otherwise noted)  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
mV  
Output offset voltage  
(measured differentially)  
[VOO  
]
VI = 0 V, VDD = 2.5 V to 5.5 V  
9
PSRR  
CMRR  
Power supply rejection ratio  
VDD = 2.5 V to 5.5 V  
–90  
–70  
–62  
0.3  
–70  
–65  
–55  
0.46  
dB  
VDD = 3.6 V to 5.5 V, VIC = 0.5 V to VDD – 0.8  
VDD = 2.5 V, VIC = 0.5 V to 1.7 V  
VDD = 5.5 V  
Common-mode rejection ratio  
dB  
RL = 8 Ω, VIN+ = VDD, VIN–  
0 V or VIN+ = 0 V, VIN– = VDD  
=
VOL  
Low-level output voltage  
High-level output voltage  
VDD = 3.6 V  
VDD = 2.5 V  
VDD = 5.5 V  
VDD = 3.6 V  
VDD = 2.5 V  
0.22  
0.19  
5.12  
3.28  
2.24  
V
0.26  
4.8  
2.1  
RL = 8 Ω, VIN+ = VDD, VIN–  
0 V or VIN+ = 0 V, VIN– = VDD  
=
VOH  
V
[IIH  
]
High-level input current  
Low-level input current  
Supply current  
VDD = 5.5 V, VI = 5.8 V  
VDD = 5.5 V, VI = –0.3 V  
1.2  
1.2  
2
µA  
µA  
[IIL]  
IDD  
VDD = 2.5 V to 5.5 V, No load, SHUTDOWN = VIH  
1.7  
mA  
Supply current in shutdown  
mode  
IDD(SD)  
SHUTDOWN = VIL , VDD = 2.5 V to 5.5 V, No load  
0.01  
0.9  
µA  
7.6 Operating Characteristics  
over operating free-air temperature range (unless otherwise noted)  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
1.25  
MAX  
UNIT  
VDD = 5 V  
THD + N = 1%, f = 1  
kHz  
PO  
Output power  
VDD = 3.6 V  
VDD = 2.5 V  
0.63  
W
0.3  
VDD = 5 V, PO = 1 W, f = 1 kHz  
VDD = 3.6 V, PO = 0.5 W, f = 1 kHz  
VDD = 2.5 V, PO = 200 mW, f = 1 kHz  
C(BYPASS) = 0.47°F,  
0.06%  
0.07%  
0.08%  
Total harmonic distortion plus  
noise  
THD+N  
VDD = 3.6 V to 5.5 V,  
Inputs AC-grounded  
with CI = 2 F  
f = 217 Hz to 2 kHz, VRIPPLE  
= 200 mVPP  
–87  
–82  
C(BYPASS) = 0.47 F,  
VDD = 2.5 V to 3.6 V,  
Inputs AC-grounded  
with CI = 2 F  
f = 217 Hz to 2 kHz, VRIPPLE  
= 200 mVPP  
kSVR  
Supply ripple rejection ratio  
dB  
C(BYPASS) = 0.47 F,  
VDD = 2.5 V to 5.5 V,  
Inputs AC-grounded  
with CI = 2 F  
f = 40 Hz to 20 kHz, VRIPPLE  
= 200 mVPP  
–74  
SNR  
Vn  
Signal-to-noise ratio  
Output voltage noise  
VDD = 5 V, PO= 1 W  
f = 20 Hz to 20 kHz  
104  
17  
dB  
No weighting  
A weighting  
VRMS  
13  
VDD= 2.5 V to 5.5 V,  
Resistor tolerance =  
0.1%, Gain = 4V/V,  
VICM = 200 mVPP  
f = 20 Hz to 1 kHz  
–85  
dB  
CMRR  
Common-mode rejection ratio  
f = 20 Hz to 20 kHz  
–74  
ZI  
Input impedance  
2
MΩ  
kΩ  
dB  
ZO  
Output impedance  
Shutdown attenuation  
Shutdown mode  
>10  
f = 20 Hz to 20 kHz, RF = RI = 20 kΩ  
–80  
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7.7 Dissipation Ratings  
PACKAGE  
TA 25°C POWER  
DERATING  
FACTOR  
TA 70°C POWER RATING TA 85°C POWER RATING  
RATING  
885 mW  
2.13 W  
2.7 W  
ZQV  
DGN  
DRB  
8.8 mW/°C  
17.1 mW/°C  
21.8 mW/°C  
486 mW  
1.36 W  
1.7 W  
354 mW  
1.11 W  
1.4 W  
7.8 Typical Characteristics  
Table 1. Table of Graphs  
FIGURE  
vs Supply voltage  
Figure 1  
PO  
PD  
Output power  
vs Load resistance  
vs Output power  
vs Power dissipation  
vs Output power  
Figure 2, Figure 3  
Figure 4, Figure 5  
Figure 6  
Power dissipation  
Maximum ambient temperature  
Figure 7, Figure 8  
Total harmonic distortion + noise vs Frequency  
vs Common-mode input voltage  
vs Frequency  
Figure 9, Figure 10, Figure 11, Figure 12  
Figure 13  
Supply voltage rejection ratio  
Supply voltage rejection ratio  
GSM Power supply rejection  
GSM Power supply rejection  
Figure 14, Figure 15, Figure 16, Figure 17  
vs Common-mode input voltage  
vs Time  
Figure 18  
Figure 19  
Figure 20  
Figure 21  
Figure 22  
Figure 23  
Figure 24  
Figure 25  
Figure 26  
vs Frequency  
vs Frequency  
CMRR  
Common-mode rejection ratio  
vs Common-mode input voltage  
vs Frequency  
Closed loop gain/phase  
Open loop gain/phase  
Supply current  
vs Frequency  
IDD  
vs Supply voltage  
vs Bypass capacitor  
Start-up time  
1.4  
1.2  
1
1.8  
1.6  
1.4  
f = 1 kHz  
THD+N = 1%  
Gain = 1 V/V  
V
= 5 V  
DD  
1.2  
THD+N = 10%  
V
= 3.6 V  
DD  
0.8  
0.6  
0.4  
1
V
= 2.5 V  
0.8  
DD  
0.6  
THD+N = 1%  
0.4  
0.2  
0.2  
0
0
2.5  
3
3.5  
4
4.5  
5
8
13  
18  
23  
28  
32  
V
- Supply V oltage - V  
R
L
- Load Resistance -  
W
DD  
Figure 1. Output Power vs Supply Voltage  
Figure 2. Output Power vs Load Resistance  
6
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1.8  
1.6  
1.4  
1.2  
1
0.4  
0.35  
0.3  
f = 1 kHz  
V
= 3.6 V  
DD  
THD+N = 10%  
Gain = 1 V/V  
8 W  
V
= 5 V  
DD  
0.25  
0.2  
V
= 3.6 V  
DD  
0.8  
0.6  
0.4  
V
= 2.5 V  
DD  
0.15  
0.1  
16 W  
0.05  
0
0.2  
0
8
13  
18  
23  
28  
32  
0
0.2  
0.4  
0.6  
0.8  
R
L
- Load Resistance - W  
P
- Output Power - W  
O
Figure 3. Output Power vs Load Resistance  
Figure 4. Power Dissipation vs Output Power  
90  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
V
= 5 V  
DD  
80  
70  
60  
50  
40  
30  
8 W  
16 W  
ZQV Package Only  
20  
10  
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8  
- Power Dissipation - W  
0
0.2 0.4  
0.6  
0.8  
1
1.2 1.4  
P
P
- Output Power - W  
D
O
Figure 6. Maximum Ambient Temperature vs Power  
Dissipation  
Figure 5. Power Dissipation vs Output Power  
10  
10  
5
R
L
= 16 W  
5
2
f = 1 kHz  
C
= 0 to 1 mF  
(Bypass)  
2.5 V  
2
1
0.5  
Gain = 1 V/V  
3.6 V  
1
0.5  
5 V  
2.5 V  
5 V  
0.2  
0.1  
0.2  
0.1  
3.6 V  
0.05  
0.05  
R
C
= 8 W, f = 1 kHz  
L
= 0 to 1 mF  
(Bypass)  
0.02  
0.01  
0.02  
0.01  
Gain = 1 V/V  
10 m  
100 m  
1
2 3  
10 m  
100 m  
- Output Power - W  
1
2
P
- Output Power - W  
P
O
O
Figure 7. Total Harmonic Distortion + Noise vs Output  
Power  
Figure 8. Total Harmonic Distortion + Noise vs Output  
Power  
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10  
10  
5
V
= 3.6 V  
DD  
V
= 5 V  
DD  
5
25 mW  
C = 2 mF  
I
50 mW  
C = 2 mF  
I
2
1
2
1
R
C
= 8 W  
L
R
C
= 8 W  
L
= 0 to 1 mF  
(Bypass)  
= 0 to 1 mF  
(Bypass)  
Gain = 1 V/V  
0.5  
0.5  
Gain = 1 V/V  
0.2  
0.1  
0.2  
0.1  
250 mW  
125 mW  
0.05  
0.05  
0.02  
0.01  
0.02  
0.01  
1 W  
500 mW  
0.005  
0.005  
0.002  
0.001  
0.002  
0.001  
20  
100 200  
1 k 2 k  
10 k 20 k  
20  
50 100 200 500 1 k 2 k 5 k 10 k 20 k  
f - Frequency - Hz  
f - Frequency - Hz  
Figure 9. Total Harmonic Distortion + Noise vs Frequency  
Figure 10. Total Harmonic Distortion + Noise vs Frequency  
10  
10  
V
= 2.5 V  
5
V
= 3.6 V  
DD  
5
DD  
15 mW  
C = 2 mF  
I
C = 2 mF  
I
2
1
2
1
25 mW  
R
C
= 8 W  
R
C
= 16 W  
L
L
= 0 to 1 mF  
= 0 to 1 mF  
(Bypass)  
(Bypass)  
0.5  
0.5  
Gain = 1 V/V  
Gain = 1 V/V  
0.2  
0.1  
0.2  
0.1  
125 mW  
75 mW  
0.05  
0.05  
0.02  
0.01  
0.02  
0.01  
200 mW  
250 mW  
0.005  
0.005  
0.002  
0.001  
0.002  
0.001  
20  
50 100 200 500 1 k 2 k 5 k 10 k 20 k  
f - Frequency - Hz  
20  
50 100 200 500 1 k 2 k 5 k 10 k 20 k  
f - Frequency - Hz  
Figure 11. Total Harmonic Distortion + Noise vs Frequency  
Figure 12. Total Harmonic Distortion + Noise vs Frequency  
0
10  
f = 1 kHz  
C = 2 mF  
I
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
P
= 200 mW  
R
C
= 8 W  
O
L
= 0.47 mF  
(Bypass)  
V
= 200 mV  
p-p  
1
Inputs ac-Grounded  
Gain = 1 V/V  
V
= 2.5 V  
DD  
V
V
=2. 5 V  
DD  
0.10  
0.01  
V
= 5 V  
DD  
= 3.6 V  
DD  
-90  
V
= 3.6 V  
DD  
-100  
20 50 100 200 500 1 k 2 k 5 k 10 k 20 k  
f - Frequency - Hz  
0
0.5  
1
1.5  
2
2.5  
3
3.5  
V
- Common Mode Input V oltage - V  
IC  
Figure 13. Total Harmonic Distortion + Noise vs Common-  
Mode Input Voltage  
Figure 14. Supply Voltage Rejection Ratio vs Frequency  
8
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0
0
Gain = 5 V/V  
C = 2 mF  
C = 2 mF  
I
-10  
-10  
I
R
L
= 8 W  
R
C
= 8 W  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
L
-20  
-30  
-40  
-50  
-60  
-70  
-80  
Inputs Floating  
Gain = 1 V/V  
= 0.47 mF  
(Bypass)  
V
= 200 mV  
p-p  
Inputs ac-Grounded  
V
=2. 5 V  
DD  
V
=2. 5 V  
DD  
V
= 5 V  
DD  
V
= 5 V  
DD  
V
= 3.6 V  
DD  
V
= 3.6 V  
DD  
-90  
-90  
-100  
-100  
20 50 100 200 500 1 k 2 k 5 k 10 k 20 k  
f - Frequency - Hz  
20 50 100 200 500 1 k 2 k 5 k 10 k 20 k  
f - Frequency - Hz  
Figure 15. Supply Voltage Rejection Ratio vs Frequency  
Figure 16. Supply Voltage Rejection Ratio vs Frequency  
0
-10  
V
= 3.6 V  
f = 217 Hz  
DD  
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
C = 2 mF  
I
C = 0.47 mF  
(Bypass)  
-20  
-30  
-40  
-50  
-60  
-70  
R
= 8 W  
R = 8 W  
L
L
Inputs ac-Grounded  
Gain = 1 V/V  
Gain = 1 V/V  
V
= 2.5 V  
V
= 3.6 V  
DD  
DD  
C
= 0  
(Bypass)  
C
= 0.47 mF  
(Bypass)  
C
= 1 mF  
(Bypass)  
C
= 0.1 mF  
(Bypass)  
-80  
-90  
V
= 5 V  
-90  
DD  
-100  
20 50 100 200 500 1 k 2 k 5 k 10 k 20 k  
f - Frequency - Hz  
0
1
2
3
4
5
V
- Common Mode Input V oltage - V  
IC  
Figure 18. Supply Voltage Rejection Ratio vs Common-  
Mode Input Voltage  
Figure 17. Supply Voltage Rejection Ratio vs Frequency  
0
V
DD  
C1  
-50  
-100  
Frequency  
217.41 Hz  
C1 - Duty  
20 %  
C1 High  
3.598 V  
0
-150  
V
Shown in Figure 19  
DD  
C = 2 mF,  
I
-50  
C1 Pk-Pk  
504 mV  
C
= 0.47 mF,  
(Bypass)  
Inputs ac-Grounded  
Gain = 1V/V  
V
O
-100  
-150  
Ch1 100 mV/div  
Ch4 10 mV/div  
2 ms/div  
0
200 400 600 800 1k 1.2k 1.4k1.6k1.8k 2k  
f - Frequency - Hz  
t - Time - ms  
Figure 20. GSM Power Supply Rejection vs Frequency  
Figure 19. GSM Power Supply Rejection vs Time  
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0
0
V
V
= 2.5 V to 5 V  
DD  
R
= 8 W  
-10  
-10  
-20  
-30  
-40  
-50  
-60  
-70  
-80  
L
= 200 mV  
IC  
p-p  
Gain = 1 V/V  
-20  
-30  
-40  
R
= 8 W  
L
Gain = 1 V/V  
V
= 2.5 V  
DD  
-50  
-60  
-70  
-80  
V
= 5 V  
DD  
-90  
-90  
V
= 3.6 V  
DD  
-100  
-100  
20 50 100 200 500 1 k 2 k 5 k 10 k 20 k  
f - Frequency - Hz  
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
V
- Common Mode Input Voltage - V  
IC  
Figure 21. Common-Mode Rejection Ratio vs Frequency  
Figure 22. Common-Mode Rejection Ratio vs Common-  
Mode Input Voltage  
40  
30  
20  
10  
220  
180  
140  
100  
60  
200  
150  
100  
50  
200  
150  
100  
50  
Phase  
V
= 3.6 V  
DD  
R
= 8 W  
L
Gain  
Gain  
0
-10  
-20  
-30  
-40  
-50  
20  
0
0
-20  
-50  
-60  
-50  
-100  
Phase  
-100  
-140  
-180  
-220  
-100  
V
= 3.6 V  
DD  
R
= 8 W  
L
-150  
-200  
-150  
-200  
-60  
-70  
Gain = 1 V/V  
10 100 1 k  
10 k 100 k 1 M  
10 M  
100  
1 k  
10 k  
100 k  
1 M  
10 M  
f - Frequency - Hz  
f - Frequency - Hz  
Figure 23. Closed-Loop Gain / Phase vs Frequency  
Figure 24. Open-Loop Gain / Phase vs Frequency  
6
1.8  
1.6  
1.4  
1.2  
5
4
3
2
1
0
1
0.8  
0.6  
0.4  
0.2  
0
0
0.5  
(Bypass)  
1
1.5  
- Bypass Capacitor - mF  
2
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
5.5  
C
V
- Supply V oltage - V  
DD  
Start-Up time is the time it takes (from a low-to-high transition on  
SHUTDOWN) for the gain of the amplifier to reach –3 dB of the  
final gain  
Figure 26. Start-Up Time vs Bypass Capacitor  
Figure 25. Supply Current vs Supply Voltage  
10  
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8 Parameter Measurement Information  
All parameters are measured according to the conditions described in the Specifications section.  
9 Detailed Description  
9.1 Overview  
The TPA6205A1 is a 1.25-W mono fully differential amplifier. The devices operates in the range of 2.5 V to 5.5 V  
and with at least 8-Ω impedance load. It's fully differential input allows it to avoid using input coupling capacitors  
and improves its RF-immunity.  
9.2 Functional Block Diagram  
V
DD  
R
F
To Battery  
C
s
R
I
-
IN-  
V
_
+
O+  
In From  
DAC  
R
I
V
O-  
+
IN+  
R
F
GND  
SHUTDOWN  
Bias  
Circuitry  
C BYPASS  
(
)
(Optional)  
9.3 Feature Description  
9.3.1 Fully Differential Amplifiers  
The TPA6205A1 is a fully differential amplifier with differential inputs and outputs. The fully differential amplifier  
consists of a differential amplifier and a common-mode amplifier. The differential amplifier ensures that the  
amplifier outputs a differential voltage that is equal to the differential input times the gain. The common-mode  
feedback ensures that the common-mode voltage at the output is biased around VDD/2 regardless of the  
common-mode voltage at the input.  
9.3.1.1 Advantages of Fully Differential Amplifiers  
Input coupling capacitors not required: A fully differential amplifier with good CMRR, like the TPA6205A1,  
allows the inputs to be biased at voltage other than mid-supply. For example, if a DAC has mid-supply lower  
than the mid-supply of the TPA6205A1, the common-mode feedback circuit adjusts for that, and the  
TPA6205A1 outputs are still biased at mid-supply of the TPA6205A1. The inputs of the TPA6205A1 can be  
biased from 0.5 V to VDD – 0.8 V. If the inputs are biased outside of that range, input coupling capacitors are  
required.  
Mid-supply bypass capacitor, C(BYPASS), not required: The fully differential amplifier does not require a bypass  
capacitor. This is because any shift in the mid-supply affects both positive and negative channels equally and  
cancels at the differential output. However, removing the bypass capacitor slightly worsens power supply  
rejection ratio (kSVR), but a slight decrease of kSVR may be acceptable when an additional component can be  
eliminated (see Figure 17).  
Better RF-immunity: GSM handsets save power by turning on and shutting off the RF transmitter at a rate of  
217 Hz. The transmitted signal is picked-up on input and output traces. The fully differential amplifier cancels  
the signal much better than the typical audio amplifier.  
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Feature Description (continued)  
9.3.2 Fully Differential Amplifier Efficiency and Thermal Information  
Class-AB amplifiers are inefficient. The primary cause of these inefficiencies is voltage drop across the output  
stage transistors. There are two components of the internal voltage drop. One is the headroom or DC voltage  
drop that varies inversely to output power. The second component is due to the sinewave nature of the output.  
The total voltage drop can be calculated by subtracting the RMS value of the output voltage from VDD. The  
internal voltage drop multiplied by the average value of the supply current, IDD(avg), determines the internal power  
dissipation of the amplifier.  
An easy-to-use equation to calculate efficiency starts Although the voltages and currents for SE and BTL out as  
being equal to the ratio of power from the are sinusoidal in the load, currents from the supply power supply to the  
power delivered to the load. To are very different between SE and BTL accurately calculate the RMS and  
average values of configurations. In an SE application the current power in the load and in the amplifier, the  
current and waveform is a half-wave rectified shape, whereas in voltage waveform shapes must first be  
understood BTL it is a full-wave rectified waveform. This means (see Figure 27). RMS conversion factors are  
different. Keep in mind that for most of the waveform both the push and pull transistors are not on at the same  
time, which supports the fact that each amplifier in the BTL device only draws current from the supply for half the  
waveform. Equation 1 through Equation 7 are the basis for calculating amplifier efficiency.  
V
O
V
(LRMS)  
I
DD  
I
DD(avg)  
Figure 27. Voltage and Current Waveforms for BTL Amplifiers  
P
L
Efficiencya BTL amplifier =  
PSUP  
where  
VLrms2  
RL  
P =  
L
VP  
=
VLRMS  
2
PL = Power delivered to load  
PSUP = Power drawn from power supply  
VLRMS = RMS voltage on BTL load  
RL = Load resistance  
VP = Peak voltage on BTL load  
(1)  
(2)  
Therefore, PL is calculated by Equation 2:  
2
VL  
P =  
L
2RL  
And PSUP is calculated by Equation 3:  
PSUP = VDDIDDavg  
where  
12  
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Feature Description (continued)  
PSUP = Power drawn from power supply  
IDDavg = Average current drawn from the power supply  
VDD = Power supply voltage  
(3)  
(4)  
(5)  
IDDavg can be found in Equation 4:  
p VP  
VP  
RL  
2VP  
1
1 ò0  
p
IDDavg =  
sin(t) dt = -  
´
cos(t)  
[
=
0
]
p
RL  
p
pRL  
Therefore PSUP is calculated by Equation 5:  
2VDDVP  
PSUP =  
pRL  
substituting PL and PSUP into Equation 6,  
2
VP  
2RL  
Efficiency of a BTL amplifier =  
2VDDVP  
pVP  
=
4VDD  
pRL  
where  
VP = 2P RL  
L
(6)  
(7)  
Therefore:  
p 2P RL  
L
hBTL  
=
4VDD  
where  
ηBTL = Efficiency of a BTL amplifier  
Table 2. Efficiency and Maximum Ambient Temperature vs Output Power in 5-V 8- BTL Systems  
OUTPUT POWER  
(W)  
INTERNAL  
DISSIPATION (W)  
MAX AMBIENT  
TEMPERATURE (°C)  
EFFICIENCY (%)  
POWER FROM SUPPLY (W)  
0.25  
0.5  
1
31.4  
44.4  
62.8  
70.2  
0.55  
0.62  
0.59  
0.53  
0.75  
1.12  
1.59  
1.78  
62  
54  
58  
65  
1.25  
Table 2 employs Equation 7 to calculate efficiencies for four different output power levels. Note that the efficiency  
of the amplifier is quite low for lower power levels and rises sharply as power to the load is increased resulting in  
a nearly flat internal power dissipation over the normal operating range. Note that the internal dissipation at full  
output power is less than in the half power range. Calculating the efficiency for a specific system is the key to  
proper power supply design. For a 1.25-W audio system with 8-Ω loads and a 5-V supply, the maximum draw on  
the power supply is almost 1.8 W.  
A final point to remember about Class-AB amplifiers is how to manipulate the terms in the efficiency equation to  
the utmost advantage when possible. Note that in Equation 7, VDD is in the denominator. This indicates that as  
VDD goes down, efficiency goes up.  
Equation 8 is a simple formula for calculating the maximum power dissipated, PDmax, may be used for a  
differential output application:  
2 V2  
DD  
PDmax  
=
2
p RL  
(8)  
13  
PDmax for a 5-V, 8-Ω system is 634 mW.  
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The maximum ambient temperature depends on the heat sinking ability of the PCB system. The derating factor  
for the 2 mm × 2 mm Microstar Junior package is shown in the dissipation rating table. Converting this to θJA is  
shown in Equation 9:  
1
1
QJA  
=
=
Derating Factor 0.0088  
= 113°C / W  
(9)  
Given θJA, the maximum allowable junction temperature, and the maximum internal dissipation, the maximum  
ambient temperature can be calculated with Equation 10. The maximum recommended junction temperature for  
the TPA6205A1 is 125°C.  
TAMax = TJMax - QJAPDmax  
= 125 -113(0.634) = 53.3°C  
(10)  
Equation 10 shows that the maximum ambient temperature is 53.3°C at maximum power dissipation with a 5-V  
supply. Table 2 shows that for most applications no airflow is required to keep junction temperatures in the  
specified range. The TPA6205A1 is designed with thermal protection that turns the device off when the junction  
temperature surpasses 150°C to prevent damage to the IC. Also, using more resistive than 8-Ω packages, it is  
good practice minimize the speakers dramatically increases the thermal performance by reducing the output  
current.  
9.3.3 Differential Output Versus Single-Ended Output  
Figure 28 shows a Class-AB audio power amplifier (APA) in a fully differential configuration. The TPA6205A1  
amplifier has differential outputs driving both ends of the load. There are several potential benefits to this  
differential drive configuration, but initially consider power to the load. The differential drive to the speaker means  
that as one side is slewing up, the other side is slewing down, and vice versa. This in effect doubles the voltage  
swing on the load as compared to a ground referenced load. Plugging 2 × VO(PP) into the power equation, where  
voltage is squared, yields 4× the output power from the same supply rail and load impedance (see Equation 11).  
VO PP  
(
)
V rms  
=
(
)
2 2  
2
V
(rms)  
Power =  
RL  
(11)  
V
DD  
V
O(PP)  
2x V  
O(PP)  
R
L
V
DD  
–V  
O(PP)  
Figure 28. Differential Output Configuration  
14  
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In a typical wireless handset operating at 3.6 V, bridging raises the power into an 8-Ω speaker from a singled-  
ended (SE, ground reference) limit of 200 mW to 800 mW. In sound power that is a 6-dB improvement—which is  
loudness that can be heard. In addition to increased power there are frequency response concerns. Consider the  
single-supply SE configuration shown in Figure 29. A coupling capacitor is required to block the DC offset voltage  
from reaching the load. This capacitor can be quite large (approximately 33 μF to 1000 μF) so it tends to be  
expensive, heavy, occupy valuable PCB area, and have the additional drawback of limiting low-frequency  
performance of the system. This frequency-limiting effect is due to the high pass filter network created with the  
speaker impedance and the coupling capacitance and is calculated with Equation 12.  
1
fc =  
2pRLCC  
(12)  
For example, a 68-μF capacitor with an 8-Ω speaker would attenuate low frequencies below 293 Hz. The BTL  
configuration cancels the DC offsets, which eliminates the need for the blocking capacitors. Low-frequency  
performance is then limited only by the input network and speaker response. Cost and PCB space are also  
minimized by eliminating the bulky coupling capacitor.  
V
DD  
V
O(PP)  
C
C
V
O(PP)  
R
L
–3 dB  
f
c
Figure 29. Single-Ended Output and Frequency Response  
Increasing power to the load does carry a penalty of increased internal power dissipation. The increased  
dissipation is understandable considering that the BTL configuration produces 4× the output power of the SE  
configuration.  
9.4 Device Functional Modes  
9.4.1 Summing Input Signals With The TPA6205A1  
Most wireless phones or PDAs need to sum signals at the audio power amplifier or just have two signal sources  
that need separate gain. The TPA6205A1 makes it easy to sum signals or use separate signal sources with  
different gains. Many phones now use the same speaker for the earpiece and ringer, where the wireless phone  
would require a much lower gain for the phone earpiece than for the ringer. PDAs and phones that have stereo  
headphones require summing of the right and left channels to output the stereo signal to the mono speaker.  
9.4.1.1 Summing Two Differential Input Signals  
Two extra resistors are needed for summing differential signals (a total of 10 components). The gain for each  
input source can be set independently (see Equation 13 and Equation 14, and Figure 30).  
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Device Functional Modes (continued)  
VO  
RF  
R
V
V
æ
ö
Gain 1=  
Gain 2 =  
= -  
ç
÷
V
I1 è  
ø
I1  
(13)  
(14)  
VO  
RF  
R
V
V
æ
ç
ö
= -  
÷
V
I2 è  
ø
I2  
C
C
R
R
I2  
I2  
-
Differential  
Input 2  
I2  
V
V
I2  
DD  
+
R
F
To Battery  
C
S
C
R
R
I1  
I1  
-
IN-  
O+  
_
+
Differential  
Input 1  
V
C
O-  
I1  
+
I1  
IN+  
R
F
GND  
SHUTDOWN  
Bias  
Circuitry  
C BYPASS  
(
)
(Optional)  
Figure 30. Application Schematic With TPA6205A1 Summing Two Differential Inputs  
9.4.1.2 Summing a Differential Input Signal and a Single-Ended Input Signal  
Figure 31 shows how to sum a differential input signal and a single-ended input signal. Ground noise can couple  
in through IN+ with this method. It is better to use differential inputs. To assure that each input is balanced, the  
single-ended input must be driven by a low-impedance source even if the input is not in use. Both input nodes  
must see the same impedance for optimum performance, thus the use of RP and CP.  
VO  
RF  
R
V
V
æ
ö
Gain 1=  
= -  
ç
÷
V
I1 è  
ø
I1  
(15)  
(16)  
VO  
RF  
R
V
V
æ
ö
Gain 2 =  
= -  
ç
÷
V
I2 è  
ø
I2  
9.4.1.3 Summing Two Single-Ended Input Signals  
Four resistors and three capacitors are needed for summing single-ended input signals. The gain and corner  
frequencies (fc1 and fc2) for each input source can be set independently. Resistor, RP, and capacitor, CP, are  
needed on the IN+ terminal to match the impedance on the IN- terminal. The single-ended inputs must be driven  
by low impedance sources even if one of the inputs is not outputting an AC signal.  
Vo  
2´150 kW  
Gain 1 =  
=
V
RI2  
I1  
(17)  
(18)  
(19)  
Vo  
2´150 kW  
Gain 2 =  
=
V
RI2  
I2  
1
CI1  
=
2pRI1FC1  
1
CI2  
=
2pRI2FC2  
(20)  
(21)  
CP = CI1 + CI2  
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Device Functional Modes (continued)  
RI1 ´ RI2  
RP  
=
RI1 + RI2  
(22)  
C
I2  
R
R
I2  
V
DD  
Single Ended  
Input 2  
R
F
To Battery  
C
I1  
C
s
I1  
Single Ended  
Input 1  
IN-  
_
+
V
O+  
R
V
P
O-  
IN+  
C
P
R
F
GND  
SHUTDOWN  
C BYPASS  
Bias  
Circuitry  
(
)
(Optional)  
Figure 31. Application Schematic With TPA6205A1 Summing Two Single-Ended Inputs  
9.4.2 Shutdown Mode  
The TPA6205A1 can be put in shutdown mode when asserting SHUTDOWN pin to a logic LOW. While in  
shutdown mode, the device output stage is turned off, making the current consumption very low. The device exits  
shutdown mode when a HIGH logic level is applied to SHUTDOWN pin. SHUTDOWN pin is 1.8-V compatible.  
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10 Application and Implementation  
NOTE  
Information in the following applications sections is not part of the TI component  
specification, and TI does not warrant its accuracy or completeness. TI’s customers are  
responsible for determining suitability of components for their purposes. Customers should  
validate and test their design implementation to confirm system functionality.  
10.1 Application Information  
These typical connection diagrams highlight the required external components and system level connections for  
proper operation of the device in several popular cases. Each of these configurations can be realized using the  
Evaluation Modules (EVMs) for the device. These flexible modules allow full evaluation of the device in the most  
common modes of operation. Any design variation can be supported by TI through schematic and layout reviews.  
Visit http://e2e.ti.com for design assistance and join the audio amplifier discussion forum for additional  
information.  
10.2 Typical Applications  
Figure 32 through Figure 31 show application schematics for differential and single-ended inputs.  
10.2.1 TPA6205A1 With Differential Input  
The TPA6205A1 can be used with differential input without input capacitors. This section describes the design  
considerations for this application.  
V
DD  
R
F
To Battery  
C
s
R
I
-
IN-  
_
+
V
O+  
In From  
DAC  
V
R
I
O-  
+
IN+  
R
F
GND  
SHUTDOWN  
Bias  
Circuitry  
C BYPASS  
(
)
(Optional)  
Figure 32. Typical Differential Input Application Schematic  
10.2.1.1 Design Requirements  
Table 3 lists the design parameters of the device.  
Table 3. Design Parameters  
PARAMETER  
EXAMPLE VALUE  
5 V  
Power Supply  
High > 2 V  
Low < 0.8 V  
8 Ω  
Shutdown Input  
Speaker  
18  
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10.2.1.2 Detailed Design Procedure  
10.2.1.2.1 Selecting Components  
Typical values are shown in Table 4.  
Table 4. Typical Component Values  
COMPONENT  
VALUE  
10 kΩ  
RI  
RF  
10 kΩ  
(1)  
C(BYPASS)  
0.22 µF  
1 µF  
CS  
CI  
0.22 µF  
(1) C(BYPASS) is optional  
10.2.1.2.1.1 Resistors (RF and RI)  
The input (RI) and feedback resistors (RF) set the gain of the amplifier according to Equation 23.  
Gain - RF / RI  
(23)  
RF and RI should range from 1 kΩ to 100 kΩ. Most graphs were taken with RF = RI = 20 kΩ.  
Resistor matching is very important in fully differential amplifiers. The balance of the output on the reference  
voltage depends on matched ratios of the resistors. CMRR, PSRR, and the cancellation of the second harmonic  
distortion diminishes if resistor mismatch occurs. Therefore, it is recommended to use 1% tolerance resistors or  
better to keep the performance optimized.  
10.2.1.2.1.2 Bypass Capacitor (CBYPASS) and Start-Up Time  
The internal voltage divider at the BYPASS pin of this device sets a mid-supply voltage for internal references  
and sets the output common mode voltage to VDD/2. Adding a capacitor to this pin filters any noise into this pin  
and increases the kSVR. C(BYPASS)also determines the rise time of VO+ and VO– when the device is taken out of  
shutdown. The larger the capacitor, the slower the rise time. Although the output rise time depends on the  
bypass capacitor value, the device passes audio 4 μs after taken out of shutdown and the gain is slowly ramped  
up based on C(BYPASS)  
.
To minimize pops and clicks, design the circuit so the impedance (resistance and capacitance) detected by both  
inputs, IN+ and IN–, is equal.  
10.2.1.2.1.3 Input Capacitor (CI)  
The TPA6205A1 does not require input coupling capacitors if using a differential input source that is biased from  
0.5 V to VDD – 0.8 V. Use 1% tolerance or better gain-setting resistors if not using input coupling capacitors.  
In the single-ended input application an input capacitor, CI, is required to allow the amplifier to bias the input  
signal to the proper DC level. In this case, CI and RI form a high-pass filter with the corner frequency determined  
in Equation 24.  
1
fc =  
2pRICI  
(24)  
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–3 dB  
f
c
Figure 33. CI and RI High-Pass Filter Cutoff Frequency  
The value of CI is important to consider as it directly affects the bass (low frequency) performance of the circuit.  
Consider the example where RI is 10 kΩ and the specification calls for a flat bass response down to 100 Hz.  
Equation 24 is reconfigured as Equation 25.  
1
CI =  
2pRIfc  
(25)  
In this example, CI is 0.16 μF, so one would likely choose a value in the range of 0.22 μF to 0.47 μF. A further  
consideration for this capacitor is the leakage path from the input source through the input network  
(RI , CI) and the feedback resistor (RF ) to the load. This leakage current creates a DC offset voltage at the input  
to the amplifier that reduces useful headroom, especially in high gain applications. For this reason, a ceramic  
capacitor is the best choice. When polarized capacitors are used, the positive side of the capacitor should face  
the amplifier input in most applications, as the dc level there is held at VDD/2, which is likely higher than the  
source dc level. It is important to confirm the capacitor polarity in the application.  
10.2.1.2.1.4 Decoupling Capacitor (CS)  
The TPA6205A1 is a high-performance CMOS audio amplifier that requires adequate power supply decoupling to  
ensure the output total harmonic distortion (THD) is as low as possible. Power supply decoupling also prevents  
oscillations for long lead lengths between the amplifier and the speaker. For higher frequency transients, spikes,  
or digital hash on the line, a good low equivalent-series-resistance (ESR) ceramic capacitor, typically 0.1 μF to 1  
μF, placed as close as possible to the device VDD lead works best. For filtering lower frequency noise signals, a  
10-μF or greater capacitor placed near the audio power amplifier also helps, but is not required in most  
applications because of the high PSRR of this device.  
10.2.1.2.2 Using Low-ESR Capacitors  
Low-ESR capacitors are recommended throughout this applications section. A real (as opposed to ideal)  
capacitor can be modeled simply as a resistor in series with an ideal capacitor. The voltage drop across this  
resistor minimizes the beneficial effects of the capacitor in the circuit. The lower the equivalent value of this  
resistance the more the real capacitor behaves like an ideal capacitor.  
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10.2.1.3 Application Curves  
1.8  
1.6  
1.4  
1.2  
1.8  
1.6  
1.4  
1.2  
THD+N = 10%  
1
1
0.8  
0.8  
0.6  
0.4  
0.2  
THD+N = 1%  
0.6  
0.4  
0.2  
0
0
2.5  
3
3.5  
4
4.5  
5
0
0.5  
1
1.5  
2
2.5  
3
3.5  
4
4.5  
5
5.5  
V
- Supply V oltage - V  
V
DD  
- Supply V oltage - V  
DD  
Figure 34. Output Power vs Supply Voltage  
Figure 35. Supply Current vs Supply Voltage  
10.2.2 TPA6205A1 With Differential Input and Input Capacitors  
The TPA6205A1 supports differential input operation with input capacitors. This section describes the design  
considerations for this application.  
V
DD  
R
F
To Battery  
C
C
s
I
I
R
I
IN-  
-
_
+
V
O+  
IN  
R
I
V
O-  
IN+  
+
C
R
F
GND  
SHUTDOWN  
Bias  
Circuitry  
C BYPASS  
(
)
(Optional)  
Figure 36. Differential Input Application Schematic Optimized With Input Capacitors  
10.2.2.1 Design Requirements  
Refer to the Design Requirements.  
10.2.2.2 Detailed Design Procedure  
Refer to the Detailed Design Procedure.  
10.2.2.3 Application Curves  
Refer to the Application Curves.  
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10.2.3 TPA6205A1 With Single-Ended Input  
The TPA6205A1 can be used with single-ended inputs, using Input capacitors. This section describes the design  
considerations for this application.  
V
DD  
R
F
To Battery  
C
I
C
s
R
I
IN-  
_
+
V
O+  
IN  
R
V
I
O-  
IN+  
C
I
R
F
GND  
SHUTDOWN  
C BYPASS  
Bias  
Circuitry  
(
)
(Optional)  
Figure 37. Single-Ended Input Application Schematic  
10.2.3.1 Design Requirements  
Refer to the Design Requirements.  
10.2.3.2 Detailed Design Procedure  
Refer to the Detailed Design Procedure.  
10.2.3.3 Application Curves  
Refer to the Application Curves.  
11 Power Supply Recommendations  
The TPA6205A1 is designed to operate from an input voltage supply range between 2.5-V and 5.5-V. Therefore,  
the output voltage range of power supply should be within this range and well regulated. The current capability of  
upper power should not exceed the maximum current limit of the power switch.  
11.1 Power Supply Decoupling Capacitors  
The TPA6205A1 requires adequate power supply decoupling to ensure a high efficiency operation with low total  
harmonic distortion (THD). Place a low equivalent-series-resistance (ESR) ceramic capacitor, typically 0.1 μF,  
within 2 mm of the VDD pin. This choice of capacitor and placement helps with higher frequency transients,  
spikes, or digital hash on the line. In addition to the 0.1 μF ceramic capacitor, is recommended to place a 2.2 μF  
to 10 μF capacitor on the VDD supply trace. This larger capacitor acts as a charge reservoir, providing energy  
faster than the board supply, thus helping to prevent any drop in the supply voltage.  
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12 Layout  
12.1 Layout Guidelines  
Placing the decoupling capacitors as close as possible to the device is important for the efficiency of the class-D  
amplifier. Any resistance or inductance in the trace between the device and the capacitor can cause a loss in  
efficiency.  
For the DRB (QFN/SON) and DGN (MSOP) to presence of voids within the exposed thermal pad  
interconnection. Total elimination is difficult, but the design of the exposed pad stencil is key. The stencil design  
proposed in the Texas Instruments application note QFN/SON PCB Attachment (SLUA271) enables out-gassing  
of the solder paste during reflow as well as regulating the finished solder thickness. Typically the solder paste  
coverage is approximately 50% of the pad area.  
In making the pad size for the BGA balls, it is recommended that the layout use soldermask-defined (SMD) land.  
With this method, the copper pad is made larger than the desired land area, and the opening size is defined by  
the opening in the solder mask material. The advantages normally associated with this technique include more  
closely controlled size and better copper adhesion to the laminate. Increased copper also increases the thermal  
performance of the IC. Better size control is the result of photo imaging the stencils for masks. Small plated vias  
should be placed near the center ball connecting ball B2 to the ground plane. Added plated vias and ground  
plane act as a heatsink and increase the thermal performance of the device. Figure 38 shows the appropriate  
diameters for a 2 mm × 2 mm MicroStar Junior™ BGA layout.  
It is very important to keep the TPA6205A1 external components very close to the TPA6205A1 to limit noise  
pickup. The TPA6205A1 layout is shown in the next section as a layout example.  
0.38 mm  
0.25 mm  
0.28 mm  
C1  
B1  
A1  
VIAS to Ground Plane  
C2  
B2  
Solder Mask  
C3  
B3  
A3  
Paste Mask (Stencil)  
Copper Trace  
Figure 38. MicroStar Junior™ BGA Recommended Layout  
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12.2 Layout Example  
SHUTDOWN  
OUT -  
C1  
C2  
C3  
B1  
B2  
B3  
A1  
A3  
Decoupling capacitor  
placed as close as  
possible to the device  
+
IN  
IN  
TPA6205A1  
OUT +  
-
Top Layer Ground Plane  
Top Layer Traces  
Via to Power Supply  
Pad to Top Layer Ground Plane  
Via to Bottom Layer Ground Plane  
Figure 39. TPA6205A1 BGA Layout  
OUT -  
SHUTDOWN  
1
2
8
7
Decoupling capacitor  
placed as close as  
possible to the device  
3
4
6
5
+
IN  
IN  
OUT +  
-
TPA6205A1  
Top Layer Ground Plane  
Pad to Top Layer Ground Plane  
Via to Bottom Layer Ground Plane  
Top Layer Traces  
Thermal Pad  
Via to Power Supply  
Figure 40. TPA6205A1 HVSSOP Layout  
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Layout Example (continued)  
SHUTDOWN  
8
1
2
3
4
OUT -  
Decoupling capacitor  
placed as close as  
possible to the device  
7
6
IN  
IN  
+
-
5
OUT +  
TPA6205A1  
Top Layer Ground Plane  
Top Layer Traces  
Thermal Pad  
Pad to Top Layer Ground Plane  
Via to Bottom Ground Plane  
Via to Power Supply  
Figure 41. TPA6205A1 VSON Layout  
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13 Device and Documentation Support  
13.1 Community Resources  
The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective  
contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of  
Use.  
TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration  
among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help  
solve problems with fellow engineers.  
Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and  
contact information for technical support.  
13.2 Trademarks  
MicroStar Junior, E2E are trademarks of Texas Instruments.  
All other trademarks are the property of their respective owners.  
13.3 Electrostatic Discharge Caution  
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam  
during storage or handling to prevent electrostatic damage to the MOS gates.  
13.4 Glossary  
SLYZ022 TI Glossary.  
This glossary lists and explains terms, acronyms, and definitions.  
14 Mechanical, Packaging, and Orderable Information  
The following pages include mechanical, packaging, and orderable information. This information is the most  
current data available for the designated devices. This data is subject to change without notice and revision of  
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.  
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PACKAGE OPTION ADDENDUM  
www.ti.com  
31-Mar-2021  
PACKAGING INFORMATION  
Orderable Device  
Status Package Type Package Pins Package  
Eco Plan  
Lead finish/  
Ball material  
MSL Peak Temp  
Op Temp (°C)  
Device Marking  
Samples  
Drawing  
Qty  
(1)  
(2)  
(3)  
(4/5)  
(6)  
HPA00801DRBR  
TPA6205A1DGN  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
LIFEBUY  
SON  
HVSSOP  
HVSSOP  
HVSSOP  
HVSSOP  
SON  
DRB  
DGN  
DGN  
DGN  
DGN  
DRB  
DRB  
NMB  
ZQV  
8
8
8
8
8
8
8
8
8
3000 RoHS & Green  
NIPDAU  
Level-2-260C-1 YEAR  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
-40 to 85  
AAOI  
AAPI  
AAPI  
AAPI  
AAPI  
AAOI  
AAOI  
AANI  
AANI  
80  
80  
RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM  
RoHS & Green NIPDAU Level-1-260C-UNLIM  
TPA6205A1DGNG4  
TPA6205A1DGNR  
TPA6205A1DGNRG4  
TPA6205A1DRBR  
TPA6205A1DRBT  
TPA6205A1NMBR  
TPA6205A1ZQVR  
2500 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM  
2500 RoHS & Green  
3000 RoHS & Green  
NIPDAU  
NIPDAU  
NIPDAU  
SNAGCU  
SNAGCU  
Level-1-260C-UNLIM  
Level-2-260C-1 YEAR  
Level-2-260C-1 YEAR  
Level-2-260C-1 YEAR  
Level-2-260C-1 YEAR  
SON  
250  
RoHS & Green  
NFBGA  
2500 RoHS & Green  
2500 RoHS & Green  
BGA  
MICROSTAR  
JUNIOR  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance  
do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may  
reference these types of products as "Pb-Free".  
RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.  
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based  
flame retardants must also meet the <=1000ppm threshold requirement.  
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
31-Mar-2021  
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation  
of the previous line and the two combined represent the entire Device Marking for that device.  
(6)  
Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two  
lines if the finish value exceeds the maximum column width.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information  
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and  
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.  
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.  
Addendum-Page 2  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
1-Apr-2021  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0  
B0  
K0  
P1  
W
Pin1  
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant  
(mm) W1 (mm)  
TPA6205A1DGNR  
TPA6205A1DGNR  
TPA6205A1DGNR  
TPA6205A1DRBR  
TPA6205A1DRBT  
TPA6205A1DRBT  
TPA6205A1NMBR  
TPA6205A1ZQVR  
HVSSOP DGN  
HVSSOP DGN  
HVSSOP DGN  
8
8
8
8
8
8
8
8
2500  
2500  
2500  
3000  
250  
330.0  
330.0  
330.0  
330.0  
180.0  
180.0  
330.0  
330.0  
12.4  
12.4  
12.4  
12.4  
12.4  
12.4  
8.4  
5.3  
5.3  
5.3  
3.3  
3.3  
3.3  
2.3  
2.3  
3.4  
3.4  
3.4  
3.3  
3.3  
3.3  
2.3  
2.3  
1.4  
1.4  
1.4  
1.1  
1.1  
1.1  
1.4  
1.4  
8.0  
8.0  
8.0  
8.0  
8.0  
8.0  
4.0  
4.0  
12.0  
12.0  
12.0  
12.0  
12.0  
12.0  
8.0  
Q1  
Q1  
Q1  
Q2  
Q2  
Q2  
Q1  
Q1  
SON  
SON  
DRB  
DRB  
DRB  
NMB  
ZQV  
SON  
250  
NFBGA  
2500  
2500  
BGA MI  
CROSTA  
R JUNI  
OR  
8.4  
8.0  
TPA6205A1ZQVR  
BGA MI  
CROSTA  
R JUNI  
OR  
ZQV  
8
2500  
330.0  
8.4  
2.3  
2.3  
1.4  
4.0  
8.0  
Q1  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
1-Apr-2021  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
SPQ  
Length (mm) Width (mm) Height (mm)  
TPA6205A1DGNR  
TPA6205A1DGNR  
TPA6205A1DGNR  
TPA6205A1DRBR  
TPA6205A1DRBT  
TPA6205A1DRBT  
TPA6205A1NMBR  
TPA6205A1ZQVR  
HVSSOP  
HVSSOP  
HVSSOP  
SON  
DGN  
DGN  
DGN  
DRB  
DRB  
DRB  
NMB  
ZQV  
8
8
8
8
8
8
8
8
2500  
2500  
2500  
3000  
250  
358.0  
364.0  
853.0  
367.0  
210.0  
210.0  
338.1  
338.1  
335.0  
364.0  
449.0  
367.0  
185.0  
185.0  
338.1  
338.1  
35.0  
27.0  
35.0  
35.0  
35.0  
35.0  
20.6  
20.6  
SON  
SON  
250  
NFBGA  
2500  
2500  
BGA MICROSTAR  
JUNIOR  
TPA6205A1ZQVR  
BGA MICROSTAR  
JUNIOR  
ZQV  
8
2500  
350.0  
350.0  
43.0  
Pack Materials-Page 2  
PACKAGE OUTLINE  
NFBGA - 1 mm max height  
PLASTIC BALL GRID ARRAY  
NMB0008A  
A
2.1  
1.9  
B
BALL A1 CORNER  
2.1  
1.9  
1 MAX  
C
SEATING PLANE  
0.12 C  
BALL TYP  
0.25  
0.15  
1
TYP  
0.5 TYP  
C
0.5 TYP  
0.5 TYP  
0.5 TYP  
SYMM  
1
B
A
TYP  
0.35  
0.25  
8X Ø  
1
2
3
0.15  
0.05  
C A B  
C
SYMM  
4224891/A 04/2019  
NanoFree is a trademark of Texas Instruments.  
NOTES:  
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing  
per ASME Y14.5M.  
2. This drawing is subject to change without notice.  
www.ti.com  
EXAMPLE BOARD LAYOUT  
NFBGA - 1 mm max height  
PLASTIC BALL GRID ARRAY  
NMB0008A  
(0.5) TYP  
1
2
3
(0.5) TYP  
A
B
SYMM  
8X (Ø0.25)  
C
SYMM  
LAND PATTERN EXAMPLE  
SCALE: 25X  
0.05 MIN  
ALL AROUND  
0.05 MAX  
ALL AROUND  
METAL UNDER  
SOLDER MASK  
EXPOSED  
METAL  
(Ø 0.25)  
SOLDER MASK  
OPENING  
EXPOSED  
METAL  
(Ø 0.25)  
METAL  
SOLDER MASK  
OPENING  
NON- SOLDER MASK  
DEFINED  
SOLDER MASK  
DEFINED  
(PREFERRED)  
SOLDER MASK DETAILS  
NOT TO SCALE  
4224891/A 04/2019  
NOTES: (continued)  
3. Final dimensions may vary due to manufacturing tolerance considerations and also routing constraints. Refer to Texas Instruments  
Literature number SNVA009 (www.ti.com/lit/snva009).  
www.ti.com  
EXAMPLE STENCIL DESIGN  
NFBGA - 1 mm max height  
PLASTIC BALL GRID ARRAY  
NMB0008A  
(0.5) TYP  
1
2
3
(0.5) TYP  
A
B
SYMM  
(R0.05)  
C
8X ( 0.25)  
SYMM  
SOLDER PASTE EXAMPLE  
BASED ON 0.100 mm THICK STENCIL  
SCALE: 25X  
4224891/A 04/2019  
NOTES: (continued)  
4. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release.  
www.ti.com  
PACKAGE OUTLINE  
DRB0008A  
VSON - 1 mm max height  
SCALE 4.000  
PLASTIC SMALL OUTLINE - NO LEAD  
3.1  
2.9  
B
A
PIN 1 INDEX AREA  
3.1  
2.9  
C
1 MAX  
SEATING PLANE  
0.08 C  
0.05  
0.00  
DIM A  
OPT 1  
(0.1)  
OPT 2  
(0.2)  
1.5 0.1  
4X (0.23)  
EXPOSED  
THERMAL PAD  
(DIM A) TYP  
4
5
2X  
1.95  
1.75 0.1  
8
1
6X 0.65  
0.37  
0.25  
8X  
PIN 1 ID  
0.1  
C A B  
C
(OPTIONAL)  
(0.65)  
0.05  
0.5  
0.3  
8X  
4218875/A 01/2018  
NOTES:  
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing  
per ASME Y14.5M.  
2. This drawing is subject to change without notice.  
3. The package thermal pad must be soldered to the printed circuit board for thermal and mechanical performance.  
www.ti.com  
EXAMPLE BOARD LAYOUT  
DRB0008A  
VSON - 1 mm max height  
PLASTIC SMALL OUTLINE - NO LEAD  
(1.5)  
(0.65)  
SYMM  
8X (0.6)  
(0.825)  
8
8X (0.31)  
1
SYMM  
(1.75)  
(0.625)  
6X (0.65)  
4
5
(R0.05) TYP  
(
0.2) VIA  
(0.23)  
TYP  
(0.5)  
(2.8)  
LAND PATTERN EXAMPLE  
EXPOSED METAL SHOWN  
SCALE:20X  
0.07 MIN  
ALL AROUND  
0.07 MAX  
ALL AROUND  
EXPOSED  
METAL  
EXPOSED  
METAL  
SOLDER MASK  
OPENING  
METAL  
SOLDER MASK  
OPENING  
METAL UNDER  
SOLDER MASK  
NON SOLDER MASK  
DEFINED  
SOLDER MASK  
DEFINED  
(PREFERRED)  
SOLDER MASK DETAILS  
4218875/A 01/2018  
NOTES: (continued)  
4. This package is designed to be soldered to a thermal pad on the board. For more information, see Texas Instruments literature  
number SLUA271 (www.ti.com/lit/slua271).  
5. Vias are optional depending on application, refer to device data sheet. If any vias are implemented, refer to their locations shown  
on this view. It is recommended that vias under paste be filled, plugged or tented.  
www.ti.com  
EXAMPLE STENCIL DESIGN  
DRB0008A  
VSON - 1 mm max height  
PLASTIC SMALL OUTLINE - NO LEAD  
(0.65)  
4X (0.23)  
SYMM  
METAL  
TYP  
8X (0.6)  
4X  
(0.725)  
8
1
8X (0.31)  
(2.674)  
(1.55)  
SYMM  
6X (0.65)  
4
5
(R0.05) TYP  
(1.34)  
(2.8)  
SOLDER PASTE EXAMPLE  
BASED ON 0.125 mm THICK STENCIL  
EXPOSED PAD  
84% PRINTED SOLDER COVERAGE BY AREA  
SCALE:25X  
4218875/A 01/2018  
NOTES: (continued)  
6. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate  
design recommendations.  
www.ti.com  
GENERIC PACKAGE VIEW  
DGN 8  
3 x 3, 0.65 mm pitch  
PowerPAD VSSOP - 1.1 mm max height  
SMALL OUTLINE PACKAGE  
This image is a representation of the package family, actual package may vary.  
Refer to the product data sheet for package details.  
4225482/A  
www.ti.com  
PACKAGE OUTLINE  
DGN0008D  
PowerPADTM VSSOP - 1.1 mm max height  
S
C
A
L
E
4
.
0
0
0
SMALL OUTLINE PACKAGE  
C
5.05  
4.75  
TYP  
A
0.1 C  
SEATING  
PLANE  
PIN 1 INDEX AREA  
6X 0.65  
8
1
2X  
3.1  
2.9  
1.95  
NOTE 3  
4
5
0.38  
8X  
0.25  
3.1  
2.9  
0.13  
C A B  
B
NOTE 4  
0.23  
0.13  
SEE DETAIL A  
EXPOSED THERMAL PAD  
4
5
0.25  
GAGE PLANE  
1.89  
1.63  
9
1.1 MAX  
8
0.15  
0.05  
1
0.7  
0.4  
0 -8  
A
20  
DETAIL A  
TYPICAL  
1.57  
1.28  
4225481/A 11/2019  
PowerPAD is a trademark of Texas Instruments.  
NOTES:  
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing  
per ASME Y14.5M.  
2. This drawing is subject to change without notice.  
3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not  
exceed 0.15 mm per side.  
4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.25 mm per side.  
5. Reference JEDEC registration MO-187.  
www.ti.com  
EXAMPLE BOARD LAYOUT  
DGN0008D  
PowerPADTM VSSOP - 1.1 mm max height  
SMALL OUTLINE PACKAGE  
(2)  
NOTE 9  
METAL COVERED  
BY SOLDER MASK  
(1.57)  
SOLDER MASK  
DEFINED PAD  
SYMM  
8X (1.4)  
(R0.05) TYP  
8
8X (0.45)  
1
(3)  
NOTE 9  
SYMM  
(1.89)  
9
(1.22)  
6X (0.65)  
5
4
(
0.2) TYP  
VIA  
SEE DETAILS  
(0.55)  
(4.4)  
LAND PATTERN EXAMPLE  
EXPOSED METAL SHOWN  
SCALE: 15X  
SOLDER MASK  
OPENING  
METAL UNDER  
SOLDER MASK  
SOLDER MASK  
OPENING  
METAL  
EXPOSED METAL  
EXPOSED METAL  
0.05 MAX  
ALL AROUND  
0.05 MIN  
ALL AROUND  
NON-SOLDER MASK  
DEFINED  
SOLDER MASK  
DEFINED  
15.000  
(PREFERRED)  
SOLDER MASK DETAILS  
4225481/A 11/2019  
NOTES: (continued)  
6. Publication IPC-7351 may have alternate designs.  
7. Solder mask tolerances between and around signal pads can vary based on board fabrication site.  
8. Vias are optional depending on application, refer to device data sheet. If any vias are implemented, refer to their locations shown  
on this view. It is recommended that vias under paste be filled, plugged or tented.  
9. Size of metal pad may vary due to creepage requirement.  
www.ti.com  
EXAMPLE STENCIL DESIGN  
DGN0008D  
PowerPADTM VSSOP - 1.1 mm max height  
SMALL OUTLINE PACKAGE  
(1.57)  
BASED ON  
0.125 THICK  
STENCIL  
SYMM  
(R0.05) TYP  
8X (1.4)  
8
1
8X (0.45)  
(1.89)  
SYMM  
BASED ON  
0.125 THICK  
STENCIL  
6X (0.65)  
5
4
METAL COVERED  
BY SOLDER MASK  
SEE TABLE FOR  
DIFFERENT OPENINGS  
FOR OTHER STENCIL  
THICKNESSES  
(4.4)  
SOLDER PASTE EXAMPLE  
EXPOSED PAD 9:  
100% PRINTED SOLDER COVERAGE BY AREA  
SCALE: 15X  
STENCIL  
THICKNESS  
SOLDER STENCIL  
OPENING  
0.1  
1.76 X 2.11  
1.57 X 1.89 (SHOWN)  
1.43 X 1.73  
0.125  
0.15  
0.175  
1.33 X 1.60  
4225481/A 11/2019  
NOTES: (continued)  
10. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate  
design recommendations.  
11. Board assembly site may have different recommendations for stencil design.  
www.ti.com  
PACKAGE OUTLINE  
DGN0008G  
PowerPADTM VSSOP - 1.1 mm max height  
S
C
A
L
E
4
.
0
0
0
SMALL OUTLINE PACKAGE  
C
5.05  
4.75  
TYP  
A
0.1 C  
SEATING  
PLANE  
PIN 1 INDEX AREA  
6X 0.65  
8
1
2X  
3.1  
2.9  
1.95  
NOTE 3  
4
5
0.38  
8X  
0.25  
3.1  
2.9  
0.13  
C A B  
B
NOTE 4  
0.23  
0.13  
SEE DETAIL A  
EXPOSED THERMAL PAD  
4
5
0.25  
GAGE PLANE  
2.15  
1.95  
9
1.1 MAX  
8
0.15  
0.05  
1
0.7  
0.4  
0 -8  
A
20  
DETAIL A  
TYPICAL  
1.846  
1.646  
4225480/A 11/2019  
PowerPAD is a trademark of Texas Instruments.  
NOTES:  
1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing  
per ASME Y14.5M.  
2. This drawing is subject to change without notice.  
3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not  
exceed 0.15 mm per side.  
4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.25 mm per side.  
5. Reference JEDEC registration MO-187.  
www.ti.com  
EXAMPLE BOARD LAYOUT  
DGN0008G  
PowerPADTM VSSOP - 1.1 mm max height  
SMALL OUTLINE PACKAGE  
(2)  
NOTE 9  
(1.846)  
SYMM  
METAL COVERED  
BY SOLDER MASK  
SOLDER MASK  
DEFINED PAD  
8X (1.4)  
(R0.05) TYP  
8
8X (0.45)  
1
(3)  
NOTE 9  
SYMM  
9
(2.15)  
(1.22)  
6X (0.65)  
5
4
(
0.2) TYP  
VIA  
SEE DETAILS  
(0.55)  
(4.4)  
LAND PATTERN EXAMPLE  
EXPOSED METAL SHOWN  
SCALE: 15X  
SOLDER MASK  
OPENING  
METAL UNDER  
SOLDER MASK  
SOLDER MASK  
OPENING  
METAL  
EXPOSED METAL  
EXPOSED METAL  
0.05 MAX  
ALL AROUND  
0.05 MIN  
ALL AROUND  
NON-SOLDER MASK  
DEFINED  
SOLDER MASK  
DEFINED  
15.000  
(PREFERRED)  
SOLDER MASK DETAILS  
4225480/A 11/2019  
NOTES: (continued)  
6. Publication IPC-7351 may have alternate designs.  
7. Solder mask tolerances between and around signal pads can vary based on board fabrication site.  
8. Vias are optional depending on application, refer to device data sheet. If any vias are implemented, refer to their locations shown  
on this view. It is recommended that vias under paste be filled, plugged or tented.  
9. Size of metal pad may vary due to creepage requirement.  
www.ti.com  
EXAMPLE STENCIL DESIGN  
DGN0008G  
PowerPADTM VSSOP - 1.1 mm max height  
SMALL OUTLINE PACKAGE  
(1.846)  
BASED ON  
0.125 THICK  
STENCIL  
SYMM  
(R0.05) TYP  
8X (1.4)  
8
1
8X (0.45)  
(2.15)  
SYMM  
BASED ON  
0.125 THICK  
STENCIL  
6X (0.65)  
5
4
METAL COVERED  
BY SOLDER MASK  
SEE TABLE FOR  
DIFFERENT OPENINGS  
FOR OTHER STENCIL  
THICKNESSES  
(4.4)  
SOLDER PASTE EXAMPLE  
EXPOSED PAD 9:  
100% PRINTED SOLDER COVERAGE BY AREA  
SCALE: 15X  
STENCIL  
THICKNESS  
SOLDER STENCIL  
OPENING  
0.1  
2.06 X 2.40  
1.846 X 2.15 (SHOWN)  
1.69 X 1.96  
0.125  
0.15  
0.175  
1.56 X 1.82  
4225480/A 11/2019  
NOTES: (continued)  
10. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate  
design recommendations.  
11. Board assembly site may have different recommendations for stencil design.  
www.ti.com  
IMPORTANT NOTICE AND DISCLAIMER  
TI PROVIDES TECHNICAL AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE  
DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS”  
AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WITHOUT LIMITATION ANY  
IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD  
PARTY INTELLECTUAL PROPERTY RIGHTS.  
These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate  
TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable  
standards, and any other safety, security, or other requirements. These resources are subject to change without notice. TI grants you  
permission to use these resources only for development of an application that uses the TI products described in the resource. Other  
reproduction and display of these resources is prohibited. No license is granted to any other TI intellectual property right or to any third party  
intellectual property right. TI disclaims responsibility for, and you will fully indemnify TI and its representatives against, any claims, damages,  
costs, losses, and liabilities arising out of your use of these resources.  
TI’s products are provided subject to TI’s Terms of Sale (https:www.ti.com/legal/termsofsale.html) or other applicable terms available either  
on ti.com or provided in conjunction with such TI products. TI’s provision of these resources does not expand or otherwise alter TI’s  
applicable warranties or warranty disclaimers for TI products.IMPORTANT NOTICE  
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265  
Copyright © 2021, Texas Instruments Incorporated  

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