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10 F
220 nF 220 nF
PVCC PVCC
220 nF 220 nF
PVCC PVCC
220 pF
Left Differential
Inputs
Right Differential
Inputs
Shutdown/Mute
Gain
Control
B
S
L
P
P
V
C
C
L
P
V
C
C
L
L
O
U
T
P
L
O
U
T
P
P
G
N
D
L
P
G
N
D
L
L
O
U
T
N
L
O
U
T
N
P
V
C
C
L
P
V
C
C
L
B
S
L
N
TPA3008D2
VCLAMPR
SHUTDOWN
V2P5
RINP
LINN
LINP
AVDDREF
NC
GAIN0
GAIN1
NC
NC
AVDD
AGND
COSC
ROSC
AVCC
VCLAMPL
B
S
R
P
P
V
C
C
R
P
V
C
C
R
R
O
U
T
P
R
O
U
T
P
P
G
N
D
R
P
G
N
D
R
R
O
U
T
N
R
O
U
T
N
P
V
C
C
R
P
V
C
C
R
B
S
R
N
RINN
AVCC
AGND
10 F
0.1 F 0.1 F
0.47 F
0.47 F
0.47 F
0.47 F
0.47 F
0.1 F 0.1 F
10 F 10 F
1 F
120 k
1 F
NC
NC
NC
FAULT
0.1 F 10 F
1 F
Control
Optional output filter for EMI suppression

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Biases
and
References
TTL Input
Buffer
(VCC Compl)
Start-up and
Protection
Logic
SC
Detect
Thermal
VDDok
RINP
RINN
Ramp
Generator
COSC
ROSC
VCCok
5-V LDO
AVCC
AVDD
AVDD
VDD
and
PWM
Mode
Logic
Gain
Adj.
Gain
Control
Deglitch
and
PWM
Mode
Logic
Gain
Adj.
LINP
LINN
Gate
Drive
VClamp
Gen
Gate
Drive
PVCC
BSRP
PVCCR(2)
ROUTP(2)
PGNDR
PGNDR
ROUTN(2)
PVCCR(2)
BSRN
Gate
Drive
VClamp
Gen
Gate
Drive
PVCC
BSLP
PVCCL(2)
LOUTP(2)
PGNDL
PGNDL
LOUTN(2)
PVCCL(2)
BSLN
VCLAMPL
VCLAMPR
GAIN0
4
To Gain Adj.
Blocks and
Start-up Logic
SHUTDOWN
V2P5
V2P5
V2P5
AVCC
AGND(2)
V2P5
V2P5
Deglitch
GAIN1
AV
DD
REF
FAULT

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13 14 15 16 17 18 19 20 21 22 23 24
25
26
27
28
29
30
31
32
33
34
35
36
48 47 46 45 44 43 42 41 40 39 38 37
1
2
3
4
5
6
7
8
9
10
11
12
B
S
R
N
P
V
C
C
R
P
V
C
C
R
R
O
U
T
N
R
O
U
T
N
P
G
N
D
R
P
G
N
D
R
R
O
U
T
P
R
O
U
T
P
P
V
C
C
R
P
V
C
C
R
B
S
R
P
VCLAMPR
NC
NC
NC
NC
AGND
COSC
ROSC
AGND
VCLAMPL
SHUTDOWN
RINN
RINP
V2P5
LINP
LINN
NC
GAIN0
GAIN1
FAULT
NC
B
S
L
N
P
V
C
C
L
P
V
C
C
L
L
O
U
T
N
L
O
U
T
N
P
G
N
D
L
P
G
N
D
L
L
O
U
T
P
L
O
U
T
P
P
V
C
C
L
P
V
C
C
L
B
S
L
P
TPA3008D2
AV
CC
AV
DD
AV
DD
REF

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0.01
20 20 k 100 1 k 10 k
T
H
D
+
N

T
o
t
a
l

H
a
r
m
o
n
i
c

D
i
s
t
o
r
t
i
o
n

+

N
o
i
s
e

%
V
CC
= 18 V,
R
L
= 16 W,
Gain = 21.6 dB
f Frequency Hz
10
0.1
P
O
= 2.5 W
P
O
= 0.5 W
P
O
= 1 W
1
0.005
10
0.01
0.1
20 20 k 100 1 k 10 k
P
O
= 2.5 W
T
H
D
+
N

T
o
t
a
l

H
a
r
m
o
n
i
c

D
i
s
t
o
r
t
i
o
n

+

N
o
i
s
e

%
V
CC
= 12 V,
R
L
= 16 W,
Gain = 21.6 dB
f Frequency Hz
P
O
= 1 W
1
P
O
= 0.5 W

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0.005
10
0.01
0.1
20 20 k 100 1 k 10 k
P
O
= 5 W
T
H
D
+
N

T
o
t
a
l

H
a
r
m
o
n
i
c

D
i
s
t
o
r
t
i
o
n

+

N
o
i
s
e

%
V
CC
= 18 V,
R
L
= 8 W,
Gain = 21.6 dB
f Frequency Hz
P
O
= 1 W
P
O
= 2.5 W
1
0.01
0.1
10
20 20 k 100 1 k 10 k
T
H
D
+
N

T
o
t
a
l

H
a
r
m
o
n
i
c

D
i
s
t
o
r
t
i
o
n

+

N
o
i
s
e

%
V
CC
= 12 V,
R
L
= 8 W
Gain = 21.6 dB
f Frequency Hz
P
O
= 1 W
P
O
= 2.5 W
P
O
= 0.5 W
1
0.01
10
0.1
1
20m 10 100 m 1
T
H
D
+
N

T
o
t
a
l

H
a
r
m
o
n
i
c

D
i
s
t
o
r
t
i
o
n

+

N
o
i
s
e

%
P
O
Output Power W
V
CC
= 12 V,
R
L
= 8 W,
Gain = 21.6 dB
20 200 m 2
1 kHz
20
20 Hz
20 kHz
0.01
10
0.1
1
20m 10 100 m 1
T
H
D
+
N

T
o
t
a
l

H
a
r
m
o
n
i
c

D
i
s
t
o
r
t
i
o
n

+

N
o
i
s
e

%
P
O
Output Power W
V
CC
= 18 V,
R
L
= 16 W,
Gain = 21.6 dB
20 Hz
20 200 m 2
20 kHz
1 kHz

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28
24
20
16
10 100 1k
G
a
i
n

d
B
32
36
f Frequency Hz
40
10k
12
8
4
0
80k
V
CC
= 12 V,
R
L
= 8 ,
Gain = 32 dB
33 kHz, RC LPF
Gain
Phase
P
h
a
s
e

50
0
100
150
5
100
50
150
0
1
2
3
4
5
6
7
8
9
10
11
12
8 9 10 11 12 13 14 15 16 17 18
P
O

O
u
t
p
u
t

P
o
w
e
r

W
THD+N = 10%
THD+N = 1%
R
L
= 16 W
V
CC
Supply Voltage V
2
3
4
5
6
7
8
9
8 9 10 11 12 13 14
THD+N = 1%
THD+N = 10%
R
L
= 8 W
V
CC
Supply Voltage V
P
O

O
u
t
p
u
t

P
o
w
e
r

W
10
11
12
Power represented by dashed line
may require external heatsinking
0
10
20
30
40
50
60
70
0 1 2 3 4 5 6
P
O
Output Power (Per Channel) W
E
f
f
i
c
i
e
n
c
y

%
80
90
100
7 8 9 10
V
CC
= 18 V,
R
L
= 16 W

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0
10
20
30
40
50
60
70
80
90
100
0 1 2 3 4 5 6 7 8 9 10
E
f
f
i
c
i
e
n
c
y

%
16 W
8 W
P
O
Total Output Power W
11 12
V
CC
= 12 V,
LC Filter,
Resistive Load,
Stereo Operation
0
0.2
0.4
0.6
0.8
1
1.2
1.4
0 2 4 6 8 10 12
P
O
Total Output Power W
1.6
1.8
2.0
14 16 18 20
LC Filter,
Resistive Load,
Stereo Operation

S
u
p
p
l
y

C
u
r
r
e
n
t

A
V
C
C
V
CC
= 18 V,
R
L
= 16 W
V
CC
= 12 V,
R
L
= 16 W
V
CC
= 12 V,
R
L
= 8 W
100
90
80
70
60
50
40
30
20
10
0
20 100 1 k 10 k
C
r
o
s
s
t
a
l
k

d
B
f Frequency Hz
V
CC
= 12 V,
P
O
= 2.5 W,
Gain = 21.6 dB
R
L
= 8W
20 k
100
90
80
70
60
50
40
20 100 1 k 10 k
f Frequency Hz
k
S
V
R

S
u
p
p
l
y

R
i
p
p
l
e

R
e
j
e
c
t
i
o
n

R
a
t
i
o

d
B
V
CC
= 12 V,
V
(RIPPLE)
= 200 mV
PP
,
R
L
= 8 W,
Gain = 15.6 dB
20 k
30
20
10
0

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70
60
50
40
30
20
10
0
100 1 k 10 k 20
V
CC
= 12 V,
Gain = 15.6 dB,
R
L
= 8 W,
Output Referred
f Frequency Hz
C
M
R
R

C
o
m
m
o
n
-
M
o
d
e

R
e
j
e
c
t
i
o
n

R
a
t
i
o

d
B
20 k

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220 nF 220 nF
PVCC PVCC
220 nF 220 nF
PVCC PVCC
220 pF
Right Differential
Inputs
Shutdown/Mute
B
S
L
P
P
V
C
C
L
P
V
C
C
L
L
O
U
T
P
L
O
U
T
P
P
G
N
D
L
P
G
N
D
L
L
O
U
T
N
L
O
U
T
N
P
V
C
C
L
P
V
C
C
L
B
S
L
N
TPA3008D2
VCLAMPR SHUTDOWN
V2P5
RINP
LINN
LINP
AVDDREF
NC
GAIN0
GAIN1
NC
NC
AVDD
AGND
COSC
ROSC
AVCC
VCLAMPL
B
S
R
P
P
V
C
C
R
P
V
C
C
R
R
O
U
T
P
R
O
U
T
P
P
G
N
D
R
P
G
N
D
R
R
O
U
T
N
R
O
U
T
N
P
V
C
C
R
P
V
C
C
R
B
S
R
N
RINN
AVCC
AGND
10 mF 10 mF
0.1 mF 0.1 mF
0.47 mF
0.47 mF
0.47 mF
0.47 mF
0.47 mF
0.1 mF 0.1 mF
10 mF 10 mF
1 mF
120 kW
1 mF
NC
NC
NC
FAULT
0.1 mF 10 mF
1 mF
Control
Left Differential
Inputs
Gain
Control
1 nF 1 nF
* *
*
Chip ferrite bead (example: Fair-Rite 251206700743) shown for EMI suppression.
1 nF 1 nF
* *

Fault Reporting

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0 V
12 V
+12 V
Current
OUTP
Differential Voltage
Across Load
OUTN

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0 V
12 V
+12 V
Current
OUTP
OUTN
Differential
Voltage
Across
Load
0 V
12 V
+12 V
Current
OUTP
OUTN
Differential
Voltage
Across
Load
Output = 0 V
Output > 0 V

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Efficiency (theoretical, %) +
R
L
R
L
)r
ds(on)

100% +
8
(8 )1.3)
100% +86%

P
(total)
+
P
O
Efficiency
+
8.5 W
0.86
+9.88 W

Other losses +P
(total)
(measured) *P
(total)
(theoretical) + 10.49 * 9.88 + 0.61 W

P
(dis)
+0.61 W * (12 V 22 mA) + 0.35 W

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0.1 F
0.1 F
0.47 F
33 H
33 H
OUTP
OUTN
L
1
L
2
C
1
C
2
C
3
1 nF
Ferrite
Chip Bead
OUTP
OUTN
Ferrite
Chip Bead
1 nF

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C
i
IN
Z
i
Z
f
Input
Signal
f +
1
2p Z
i
C
i

f
c
+
1
2pZ
i
C
i
3 dB
f
c

C
i
+
1
2pZ
i
f
c

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Analyzer
20 Hz 20 kHz
(a) Basic ClassAB
APA
Signal
Generator
Power Supply
Analyzer
20 Hz 20 kHz
R
L
(b) Filter-Free and Traditional Class-D
Class-D APA
Signal
Generator
Power Supply
R
L
Low-Pass RC
Filter
Low-Pass RC
Filter
(A)
(A)
For efficiency measurements with filter-free class-D, R
L
should be an inductive load like a speaker.

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C
IN
Audio Power
Amplifier
Generator
LowPass
RC Filter
C
IN
R
GEN
R
GEN
R
IN
R
IN
V
GEN
R
OUT
R
OUT
Analyzer
R
ANA
R
ANA
C
ANA
LowPass
RC Filter
R
L
C
ANA
Twisted-Pair Wire
Evaluation Module
Twisted-Pair Wire

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R
FILT
R
L
R
FILT
C
FILT
V
L
= V
IN
V
OUT
R
ANA
C
ANA
R
ANA
C
ANA
C
FILT
To APA
GND
AP Analyzer Input RC Low-Pass Filters Load

V
OUT
V
IN
+

R
ANA
R
ANA
)R
FILT

1 )j
w
w
O

f
C
+ 2

f
MAX
C
FILT
+
1
2p f
C
R
FILT

PACKAGING INFORMATION
Orderable Device Status
(1)
Package
Type
Package
Drawing
Pins Package
Qty
Eco Plan
(2)
Lead/Ball Finish MSL Peak Temp
(3)
TPA3008D2PHP ACTIVE HTQFP PHP 48 250 None CU NIPDAU Level-3-220C-168 HR
TPA3008D2PHPR ACTIVE HTQFP PHP 48 1000 None CU NIPDAU Level-3-220C-168 HR
TPA3008D2PHPRG4 ACTIVE HTQFP PHP 48 1000 Green (RoHS &
no Sb/Br)
CU NIPDAU Level-3-260C-168 HR
(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)
Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional
product content details.
None: Not yet available Lead (Pb-Free).
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens,
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder
temperature.
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.
PACKAGE OPTION ADDENDUM
www.ti.com 11-Feb-2005
Addendum-Page 1
IMPORTANT NOTICE
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DSP dsp.ti.com Broadband www.ti.com/broadband
Interface interface.ti.com Digital Control www.ti.com/digitalcontrol
Logic logic.ti.com Military www.ti.com/military
Power Mgmt power.ti.com Optical Networking www.ti.com/opticalnetwork
Microcontrollers microcontroller.ti.com Security www.ti.com/security
Telephony www.ti.com/telephony
Video & Imaging www.ti.com/video
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