ST TDA2040 User Manual
This is information on a product in full production.
July 2012 Doc ID 1460 Rev 6 1/16
16
TDA2040
25-watt hi-fi audio power amplifier
Datasheet − production data
Features
■ Wide-range supply voltage, up to 40 V
■ Single or split power supply
■ Short-circuit protection to ground
■ Thermal shutdown
■ P
O
= 25 W @ THD = 0.5%, V
S
= ±17 V, R
L
= 4 Ω
■ P
O
= 30 W @ THD =10%, V
S
= ±17 V, R
L
= 4 Ω
Description
The TDA2040 is a monolithic integrated circuit in
the Pentawatt
®
package, intended for use as an
audio class-AB amplifier. Typically, it provides
25 W output power into 4 Ω with THD = 0.5% at
V
S
= 34 V. The TDA2040 provides high output
current and has very low harmonic and crossover
distortion. Furthermore, the device incorporates a
patented short-circuit protection system
comprising an arrangement for automatically
limiting the dissipated power so as to keep the
operating point of the output transistors within
their safe operating range. A thermal shutdown
system is also included.
Figure 1. TDA2040 test circuit
Table 1. Device summary
Order code Package
TDA2040V Pentawatt V (vertical)
Pentawatt V
www.st.com
Pin connections TDA2040
2/16 Doc ID 1460 Rev 6
1 Pin connections
Figure 2. Schematic diagram
Figure 3. Pin connections
TDA2040 Electrical specifications
Doc ID 1460 Rev 6 3/16
2 Electrical specifications
2.1 Absolute maximum ratings
2.2 Thermal data
Table 2. Absolute maximum ratings
Symbol Parameter Value Unit
Vs Supply voltage ±20 V
Vi Input voltage Vs
Vi Differential input voltage ±15 V
Io Output peak current (internally limited) 4 A
P
tot
Power dissipation at Tcase = 75 °C 25 W
T
stg
, T
j
Storage and junction temperature -40 to 150 °C
V
ESD_HBM
ESD maximum withstanding voltage range,
test condition CDF-AEC-Q100-002- ”Human body
model”
±1500 V
Table 3. Thermal data
Symbol Parameter Min Typ Max Unit
R
th_j-case
Thermal resistance junction to case - - 3 °C/W
Electrical specifications TDA2040
4/16 Doc ID 1460 Rev 6
2.3 Electrical characteristics
The specifications given here were obtained with the conditions V
S
= ±16 V, T
amb
= 25 °C
unless otherwise specified.
Table 4. Electrical characteristics
Symbol Parameter Test conditions Min Typ Max Unit
V
S
Supply voltage - ±4.5 - ±20 V
I
d
Quiescent drain current
V
S
= ±4.5 V
V
S
= ±20 V
-
-
45
30
100
mA
mA
I
b
Input bias current V
S
= ±20 V - 0.3 1 μA
V
OS
Input offset voltage V
S
= ±20 V - ±2 ±20 mV
I
OS
Input offset current - - ±200 nA
P
o
Output power
d = 0.5%, f = 1 kHz, T
amb
= 60 °C
R
L
= 4 Ω
R
L
= 4 Ω, V
S
= ±17
R
L
= 8 Ω
20
-
22
25
12
-
-
Wd = 0.5%, f = 15 kHz; T
amb
= 60 °C
R
L
= 4 Ω
R
L
= 4 Ω, V
S
= ±17
15 18
20
-
d = 10%, f = 1 kHz
R
L
= 4 Ω, V
S
= ±17
30
BW Power bandwidth P
o
= 1 W, R
L
= 4 Ω - 100 - Hz
G
vOL
Voltage gain (open loop) f = 1 kHz - 80 - dB
G
v
Voltage gain (closed loop) f = 1 kHz 29.5 30 30.5 dB
d Total harmonic distortion
P
o
= 0.1 to 10 W, R
L
= 4 Ω,
f = 40 to 15000 Hz
-0.08- %
P
o
= 0.1 to 10 W, R
L
= 4 Ω, f = 1 kHz - 0.03 - %
e
N
Input noise voltage
B = Curve A
B = 22 Hz to 22 kHz
-
-
2
3
-
10
μV
I
N
Input noise current
B = Curve A
B = 22 Hz to 22 kHz
-
-
50
80
-
200
pA
R
i
Input resistance (pin 1) - 0.5 5 - MΩ
SVRR Supply voltage rejection ratio
G
V
= 30 dB, R
L
= 4 Ω, R
g
= 22 kΩ, f = 100 Hz
V
ripple
= 0.5 V RMS
40 50 - dB
h Efficiency
f = 1 kHz
P
o
= 12 W, R
L
= 8 Ω
P
o
= 22 W, R
L
= 4 Ω
-
-
66
63
-
-
%
T
j
Thermal shutdown junction
temperature
- - - 145 °C
TDA2040 Electrical specifications
Doc ID 1460 Rev 6 5/16
2.4 Characterizations
Figure 4. Output power vs. supply voltage Figure 5. Output power vs. supply voltage
Figure 6. Output power vs. supply voltage Figure 7. Distortion vs. frequency
Figure 8. SVRR vs. frequency Figure 9. SVRR vs. voltage gain
Loading...