T r i p a t h T e c h n o l o g y, I n c . - T e c h n i c a l I n f o r m a t i o n
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T D A 2 0 7 5 A R e v . 0 . 9 / K L i / 1 0 . 0 5
TDA2075A
STEREO CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER USING
DIGITAL POWER PROCESSING
T M
TECHNOLOGY
P r e l i m i n a r y I n f o r m a t i o n R e v i s i o n 0 . 9 O c t o b e r 2 0 0 5
G E N E R A L D E S C R I P T I O N
The TDA2075A is a two-channel, amplifier driver, that uses Tripath's proprietary Digital Power Processing
(DPP
TM
) technology. The TDA2075A offers higher integration over previous Tripath amplifiers driver
chipsets while providing exceptional audio performance for real world applications. Class-T amplifiers
offer both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers.
The TDA2075A is typically configured as a split-supply, single-ended, stereo amplifier. The TDA2075A
can also be configured single-supply, single-ended, stereo amplifier, via external component choice. For
applications that require bridged output drive, please refer to the TDA1400.
Applications
Powered DVD Players
Mini-Compo Systems
Audio/Video Amplifiers & Receivers
Multimedia Speakers
Benefits
Reduced system cost with smaller/less
expensive power supply and heat sink
Signal fidelity equal to high quality
Class-AB amplifiers
High dynamic range compatible with digital
media such as CD and DVD
Features
Class-T architecture with proprietary DPP
"Audiophile" Sound Quality
Full Audio Bandwidth, 20Hz to 20kHz
High Efficiency
Supports wide range of output power levels
and output loads by changing supply voltage
and external Mosfets
Compatible with unregulated power supplies
Output over-current protection
Over- and under-voltage protection
Over-temperature protection
48-Pin LQFP Package
T r i p a t h T e c h n o l o g y, I n c . - T e c h n i c a l I n f o r m a t i o n
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Absolute Maximum Ratings
(Note 1)
SYMBOL PARAMETER
Value
UNITS
V5
5V Power Supply
6
V
V
logic
Input logic level
V5 + 0.3
V
V10
10V Power Supply
12
V
T
STORE
Storage Temperature Range
-55 to 150
C
VPP, VNN Supply Voltage (Note 5)
+/-70
V
T
A
Operating Free-air Temperature Range
-40 to 85
C
T
J
Junction
Temperature
150
C
ESD
HB
ESD Susceptibility Human Body Model (Note 2)
All pins
2000
V
ESD
MM
ESD Susceptibility Machine Model (Note 3)
All pins
200
V
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
See the table below for Operating Conditions.
Note 2: Human body model, 100pF discharged through a 1.5K
resistor.
Note 3: Machine model, 220pF 240pF discharged through all pins.
Operating Conditions
(Note 4)
SYMBOL PARAMETER MIN.
TYP.
MAX.
UNITS
V5
5V Power Supply
4.5
5
5.5
V
V10
10V Power Supply
9
10
11
V
T
A
Operating Temperature Range
-40
25
85
C
VPP
Positive Supply Voltage (note 5)
15
65
V
VNN
Negative Supply Voltage (note 5)
-15
-65
V
Note 4: Recommended Operating Conditions indicate conditions for which the device is functional.
See Electrical Characteristics for guaranteed specific performance limits.
Note 5: The supply limitation is based on the internal over-current detection circuit. This limitation is
subject to additional characterization. In addition, depending on feedback configuration, the TDA2075A
can be used in single-supply applications, in which case, the negative supply, VNN, is not needed.
Thermal Characteristics
SYMBOL PARAMETER
Value
UNITS
JA
Junction-to-ambient Thermal Resistance (still air)
TBD
C/W
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Electrical Characteristics TDA2075A
(Note 6)
T
A
= 25
C. See Application/Test Circuit on page 7. Unless otherwise noted, the supply voltages are
V5=5V, V10=10V, and VPP=|VNN|=40V.
SYMBOL PARAMETER
CONDITIONS MIN.
TYP.
MAX.
UNITS
I
5Q
Quiescent Current
(Mute = 0V)
50
mA
I
10Q
Quiescent Current
(Mute = 0V)
FETs: FQP13N10, FQP12P10
R
BBM
= 20.0k
60 mA
I
VPPQ
Quiescent Current
(Mute = 0V)
FETs: FQP13N10, FQP12P10
R
BBM
= 20.0k
40 mA
I
VNNQ
Quiescent Current
(Mute = 0V)
FETs: FQP13N10, FQP12P10
R
BBM
= 20.0k
40 mA
I
5MUTE
Mute Supply Current
(Mute = 5V)
50
mA
V
TOC
Over Current Sense Voltage
Threshold
+/-5V Common Mode Voltage
+/-40V Common Mode Voltage
TBD
TBD
0.55
0.55
TBD
TBD
V
I
VPPSENSE
VPPSENSE Threshold Currents
Over-voltage turn on (muted)
Over-voltage turn off (mute off)
Under-voltage turn off (mute off)
Under-voltage turn on (muted)
TBD
TBD
138
135
55
52
TBD
TBD
A
A
A
A
V
VPPSENSE
Threshold Voltages with
R
VPP1
= R
VPP2
= 402K
(Note 7)
Over-voltage turn on (muted)
Over-voltage turn off (mute off)
Under-voltage turn off (mute off)
Under-voltage turn on (muted)
TBD
TBD
55.5
54.3
22.1
20.9
TBD
TBD
V
V
V
V
I
VNNSENSE
VNNSENSE
Threshold
Currents
Over-voltage turn on (muted)
Over-voltage turn off (mute off)
Under-voltage turn off (mute off)
Under-voltage turn on (muted)
TBD
TBD
138
135
51
48
TBD
TBD
A
A
A
A
V
VNNSENSE
Threshold Voltages with
R
VNN1
= 402K
R
VNN2
= 1.2M
(Note 7)
Over-voltage turn on (muted)
Over-voltage turn off (mute off)
Under-voltage turn off (mute off)
Under-voltage turn on (muted)
TBD
TBD
55.5
54.3
20.5
19.3
TBD
TBD
V
V
V
V
Note 6: Minimum and maximum limits are guaranteed but may not be 100% tested.
Note 7: These supply voltages are calculated using the I
VPPSENSE
and I
VNNSENSE
values shown in the Electrical
Characteristics table. The typical voltage values shown are calculated using a R
VPP
and R
VNN
values without
any tolerance variation. The minimum and maximum voltage limits shown include either a +1% or 1% (+1%
for Over-voltage turn on and Under-voltage turn off, -1% for Over-voltage turn off and Under-voltage turn on)
variation of R
VPP
or R
VNN
off the nominal 402kohm and 1.2Mohm values. These voltage specifications are
examples to show both typical and worst case voltage ranges for the given R
VPP
and R
VNN
resistor values.
Please refer to the Application Information section for a more detailed description of how to calculate the over
and under voltage trip voltages for a given resistor value.
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Performance Characteristics
T
A
= 25
C. Unless otherwise noted, the supply voltages are V5 = 5V, V10 = 10V, and VPP = |VNN| =
40V, the input frequency is 1kHz and the measurement bandwidth is 20kHz. See Application/Test Circuit.
SYMBOL PARAMETER
CONDITIONS MIN.
TYP.
MAX.
UNITS
P
OUT
Output
Power
(continuous output)
THD+N = 0.1%, R
L
= 4
THD+N = 1%, R
L
= 4
THD+N = 10%, R
L
= 4
THD+N = 0.1%, R
L
= 6
THD+N = 1%, R
L
= 6
THD+N = 10%, R
L
= 6
THD+N = 0.1%, R
L
= 8
THD+N = 1%, R
L
= 8
THD+N = 10%, R
L
= 8
145
160
200
105
115
150
80
90
115
W
W
W
W
W
W
W
W
W
THD + N Total Harmonic Distortion Plus
Noise
P
OUT
= 60W, R
L
= 8
0.01 %
IHF-IM
IHF Intermodulation Distortion
19kHz, 20kHz, 1:1 (IHF), R
L
= 8
P
OUT
= 25W/Channel
0.03 %
SNR Signal-to-Noise
Ratio
A Weighted, R
L
= 4
,
P
OUT
= 200W/Channel
104.4 dB
Power Efficiency
P
OUT
= 115W/Channel, R
L
= 8
92 %
A
V
Amplifier
Gain
P
OUT
= 10W/Channel, R
L
= 8
See Application / Test Circuit
20.09 V/V
A
VERROR
Channel to Channel Gain Error
P
OUT
= 10W/Channel, R
L
= 8
See Application / Test Circuit
0.5
dB
e
NOUT
Output Noise Voltage
A-Weighted, input shorted
R
FBC
= 10k
, R
FBB
= 1.1k
, and R
FBA
= 1.0k
170
V
V
OFFSET
Output Offset Voltage
No Load, Mute = Logic Low
1% R
FBA,
R
FBB
and R
FBC
resistors
-1.0 1.0 V
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TDA2075A Pinout
FB
G
N
D
1
FB
O
U
T1
OC
S
N
1
OC
S
P
1
GA
T
E
O
F
F
BBM
SET
V5
AG
N
D
DC
M
P
BI
ASC
AP
OA
O
U
T
2
NC
NC
NC
H O2
AGN D
VPPSEN SE
NC
VN N SEN SE
OVR LD B
19
42
41
39
38
40
37
48-pin LQFP
(Top View)
20
21
22
PGN D
L02
AGN D
24
23
NC
IN V1
OAOU T1
V5
V5
48
47
45
44
46
43
M U TE
PGN D
H O1
LO1
NC
13
14
15
16
NC
NC
18
17
1
11
10
12
9
8
7
6
5
4
3
2
30 29
27 26
28
25
36 35
33 32
34
31
OC
D
1
V1
0
FB
O
U
T2
FB
G
N
D
2
OC
S
N
2
O
C
SP2
FA
U
L
T
NC
V5
OC
D
2
RE
F
SU
B
IN
V
2
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