TDA2040.pdf

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20W HI-FI AUDIO POWER AMPLIFIER
TDA2040
20W Hi-Fi AUDIO POWER AMPLIFIER
package,intended for use as an audio
class AB amplifier. Typically it provides 22W output
power (d = 0.5%) at V s = 32V/4 W . The TDA2040
provides high output current and has very low
harmonic and cross-over distortion. Further the
device incorporates a patented short circuit protec-
tion system comprising an arrangement for auto-
matically limiting the dissipated power so as to keep
the working point of the output transistors within
their safe operating area. A thermal shut-down
system is also included.
PENTAWATT
ORDERING NUMBER : TDA2040V
TEST CIRCUIT
December 1995
1/13
DESCRIPTION
The TDA2040 is a monolithic integrated circuit in
Pentawatt
[
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TDA2040
SCHEMATIC DIAGRAM
PIN CONNECTION
THERMAL DATA
Symbol
Parameter
Value
Unit
R th j-case
Thermal Resistance Junction-case
Max.
3
°
C/W
2/13
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TDA2040
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V s
Supply Voltage
±
20
V
V i
Input Voltage
V s
V i
Differential Input Voltage
±
15
V
I o
Output Peak Current (internally limited)
4
A
P tot
Power Dissipation at T case =75
°
C
25
W
T stg ,T j
Storage and Junction Temperature
– 40 to + 150
°
C
ELECTRICAL CHARACTERISTICS
(refer to the test circuit, V S = ± 16V, T amb =25 o C unless otherwise specified)
Symbol
Parameter
Test Conditions
Min. Typ. Max. Unit
V s
Supply Voltage
±
2.5
±
20
V
I d
Quiescent Drain Current
V s =
±
4.5V
30
100
mA
mA
V s =
±
20V
45
I b
Input Bias Current
V s =
±
20V
0.3
1
m
A
V os
Input Offset Voltage
V s =
±
20V
±
2
±
20 mV
I os
Input Offset Current
±
200 nA
P o
Output Power
d = 0.5%, T case =60
°
C
W
f = 1kHz
W
R L =8
20
22
12
18
W
f = 15kHz
R L =4
W
15
BW
Power Bandwidth
P o = 1W, R L =4
W
100
kHz
G v
Open Loop Voltage Gain
f = 1kHz
80
dB
G v
Closed Loop Voltage Gain
f = 1kHz
29.5
30
30.5 dB
d
Total Harmonic Distortion
P o = 0.1 to 10W, R L =4
W
%
f = 40 to 15000Hz
f = 1kHz
0.08
0.03
e N
Input Noise Voltage
B = Curve A
B = 22Hz to 22kHz
2
3
m
V
10
m
V
i N Input Noise Current
B = Curve A
B = 22Hz to 22kHz
50
80
200
pA
R i
Input Resistance (pin 1)
0.5
5
M
W
SVR
Supply Voltage Rejection
,G v = 30dB
f = 100Hz, V ripple = 0.5V RMS
W
,R g = 22k
W
40
50
dB
h
Efficiency
f = 1kHz
P o = 12W
%
R L =8
W
66
63
P o = 22W
R L =4
W
T j
Thermal Shut-down Junction Temperature
145
°
C
3/13
R L =4
R L =4
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TDA2040
Figure 1 : Output Power versus Supply Voltage
Figure 2 : Output Power versus Supply Voltage
Figure 3 : Output Power versus Supply Voltage
Figure 4 : Distortion versus Frequency
Figure 5 : Supply Voltage Rejection versus
Frequency
Figure 6 : Supply Voltage Rejection versus
Voltage Gain
4/13
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TDA2040
Figure 7 : Quiescent Drain Current versus
Supply Voltage
Figure 8 : Open Loop Gain versus Frequency
Figure 9 : Power Dissipation versus Output
Power
5/13
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