UTC TDA2003
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R107-002,A
10W CAR RADIO AUDIO AMPLIFIER
DESCRIPTION
The UTC TDA2003 is a monolithic audio power amplifier
integrated circuit.
FEATURES
*Very low external component required.
*High current output ( up to 3 A).
*Low harmonic and crossover distortion.
*Built-in Over temperature protection.
*Short circuit protection between all pins.
PIN CONFIGURATIONS
1 Non inverting input
2 Inverting input
3 Ground
4 Output
5 Supply Voltage
1
TO-220B
BLOCK DIAGRAM
1 2
3
4
5
UTC TDA2003
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R107-002,A
ABSOLUTE MAXIMUM RATINGS
(Ta=25
C)
PARAMETER
SYMBOL
VALUE
UNIT
Peak Supply Voltage
Vs
40
V
DC Supply Voltage
Vs
28
V
Operating Supply Voltage
Vs
18
V
Output Peak Current (repetitive)
Io
3.5
A
Output Peak Current ( non repetitive)
Io
4.5
A
Power Dissipation at Tcase = 90
C
Ptot
20
W
Storage Temperature
Tstg
-40~+150
C
Junction Temperature
Tj
-40~+150
C
ELECTRICAL CHARACTERISTICS
(Refer to the test circuit,Vs=+-16V,Ta=25
C)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
DC CHARACTERISTICS
Supply Voltage
Vs
8
18
V
Quiescent Output
Voltage
Vo
6.1
6.9
7.7
V
Quiescent Drain
Current
Id
44
50
mA
AC CHARACTERISTICS
d=10%,f=1kHz
RL=8
5.5
6
Output Power
Po
RL=2
9
10
W
RL=3.2
7.5
RL=1.6
12
f=1kHz
Po=0.5W,RL=4
14
mV
Input Sensitivity
Vi
Po=6W,RL=4
55
mV
Po=0.5W,RL=2
10
mV
Po=10W,RL=2
50
mV
Input Saturation
Voltage
Vi(rms)
300
mV
Frequency
Response(-3dB)
B
Po=1W,RL=4
40
15000
Hz
f=1kHz
Distortion
D
Po=0.05 to 4.5W ,RL=4
0.15
%
Po=0.05 to 7.5W ,RL=2
0.15
Input
Resistance(Pin 1)
Ri
open loop,f=1kHz
70
150
k
Input Noise Current
eN
60
200
pA
Input Noise Voltage
IN
1
5
V
Open Loop
Gvo
f=1kHz
80
dB
Voltage Gain
f=10kHz
60
dB
Closed Loop
Gvc
f=1kHz
Voltage Gain
RL=4
39.3
40
40.3
dB
UTC TDA2003
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R107-002,A
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
f=1kHz
Efficiency
Po=6W,RL=4
69
%
Po=10W,RL=2
65
%
Supply Voltage
Rejection
SVR
f=100Hz,Vripple=0.5V
Rg=10k
,RL=4
30
36
dB
TEST CIRCUIT
DC Test Circuit
UTC
TDA2003
1
2
3
5
4
Vi
100nF
RL
1000
F
470
F
R1
220
R2
2.2
V
mA
+Vs
AC Test Circuit
UTC
TDA2003
1
2
3
5
4
Vi
+Vs
C1
1
F
Cx
39nF
100nF
C3
100nF
100
F
R3
1
RL
Rx
39
C4
1000
F
C2
470
F
R1
220
R2
2.2
Rx=20*R2
Cx=1/(2
B*R1)
UTC
TDA2003
1
2
3
5
4
Vi
+Vs
C1
1
F
Cx
39nF
100nF
C3
100nF
100
F
R3
1
RL
Rx
39
C4
1000
F
C2
470
F
R1
220
R2
2.2
Rx=20*R2
Cx=1/(2
B*R1)
UTC TDA2003
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R107-002,A
TYPICAL PERFORMANCE CHARACTERISTICS
8
10
12
14
16
Vs(V)
Vo(V)
0
4
2
6
8
Fig.1 Quiescent output voltage
vs.Supply voltage
8
10
12
14
16
Vs(V)
0
20
40
60
80
Id(mA)
Fig.2 Quiescent drain current
vs.Supply voltage
0
5
10
15
20
Vs(V)
0
5
10
15
20
Po
(W)
Fig.3 Output power vs.Supply
voltage
Gv=40dB
f=1kHz
d=10%
R=4
R=3.2
R=2
R=1.6
Fig.4 output power vs.load
resistance
0
2
4
6
8
RL(
)
0
4
8
12
16
Po
(W)
Vs=16V
Vs=14.4V
Vs=12V
Vs=8V
Gv=40dB
f=1kHz
d=10%
Fig.5 Gain vs. Input sensitivity
Fig.6 Gain vs. Input sensitivity
10
100
1000
20
24
28
32
36
40
44
48
52
54
58
Gv=40dB
f=1kHz
RL=4
Gv=40dB
f=1kHz
RL=2
10
20
24
28
32
36
40
44
48
52
54
58
100
1000
Fig.7 Distortion vs.
output power
Vi(rms)
Vi(rms)
10
0.1
1
100
0.01
0.1
1
10
100
R=4
R=3.2
R=2
R=1.6
Po(
)
d(%)
Fig.8 Distortion vs.
frequency
10
2
Gv=40dB
f=1kHz
Vs=14.4V
Gv=40dB
Vs=14.4V
RL=2
/4
10
1
10
3
10
4
0
0.2
0.4
0.6
0.8
d(%)
Po=2.5W
Po=50mW
Frequency (Hz)
30
35
40
45
50
55
-50
-40
-30
-20
-10
SVR
(dB)
Fig.9 Supply voltage rejection
vs. voltage gain
Gv(dB)
fripple=100Hz
Vs=14,4V
RL=2.2
Rg=10k
UTC TDA2003
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
5
QW-R107-002,A
10
10
2
10
4
10
5
10
3
-80
-60
-40
-20
0
SVR
(dB)
frequency(Hz)
Fig. 10 Supply voltage
rejection vs.frequency
R2=22
R2=1
0
2
4
6
8
2
0
4
6
8
Fig. 11 Power dissipation
and efficiency vs. output
power(Rl=4
)
Ptot
Vs=14.4V
Gv=40dB
f=1kHz
Vs=14.4V
Vripple=0.5V
Gv=40dB
f=1kHz
Rg=10k
Po(W)
Ptot
(W)
Vs=14.4V
Gv=40dB
f=1kHz
Fig. 12 Power dissipation
and efficiency vs. output
power(Rl=2
)
0
2
0
4
6
8
Ptot
(W)
2
4
6
8
Po(W)
80
60
40
20
0
(%)
80
60
40
20
0
(%)
Fig. 13 Maximum Power
dissipation and supply
voltage(sine wave operation)
0
5
10
15
20
10
15
20
5
0
RL=1.6
RL=2
RL=3.2
RL=4
Vs(V)
Ptot
(W)
10
15
20
5
0
0
50
100
150
200
Tamb(
X
C)
Ptot
(W)
Fig. 14 Maximum allowable
dissipation and ambient
temperature
infinite heatsink
10
X
C/W
30
X
C/W
Fig. 15 Typical values of
capacitor(Cx) for different
values of frequency
response
36
40
44
48
1
10
100
B=15kHz
B=10kHz
B=20kHz
R2=2.2
Gv(dB)
Cx
(nF)
APPLICATION CIRCUIT
Fig 16 Typical Application Circuit
UTC
TDA2003
1
2
3
5
4
Vi
+Vs
C1
1
F
Cx
39nF
100nF
C3
100nF
100
F
R3
1
RL
Rx
39
C4
1000
F
C2
470
F
R1
220
R2
2.2
Rx=20*R2
Cx=1/(2
B*R1)
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