ST TDA2040 User Manual
Features
■ Wide-range supply voltage, up to 40 V
■ Single or split power supply
■ Short-circuit protection to ground
■ Thermal shutdown
■ P
= 25 W @ THD = 0.5%, VS = ±17 V, RL= 4 Ω
O
■ P
= 30 W @ THD =10%, VS = ±17 V, RL = 4 Ω
O
Description
The TDA2040 is a monolithic integrated circuit in
the Pentawatt
audio class-AB amplifier. Typically, it provides
25 W output power into 4 Ω with THD = 0.5% at
V
= 34 V. The TDA2040 provides high output
S
current and has very low harmonic and crossover
distortion. Furthermore, the device incorporates a
patented short-circuit protection system
®
package, intended for use as an
TDA2040
25-watt hi-fi audio power amplifier
Datasheet − production data
Pentawatt V
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.
Table 1. Device summary
Order code Package
TDA2040V Pentawatt V (vertical)
Figure 1. TDA2040 test circuit
July 2012 Doc ID 1460 Rev 6 1/16
This is information on a product in full production.
www.st.com
16
Pin connections TDA2040
1 Pin connections
Figure 2. Schematic diagram
Figure 3. Pin connections
2/16 Doc ID 1460 Rev 6
TDA2040 Electrical specifications
2 Electrical specifications
2.1 Absolute maximum ratings
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
, T
T
stg
V
ESD_HBM
Power dissipation at Tcase = 75 °C 25 W
Storage and junction temperature -40 to 150 °C
j
ESD maximum withstanding voltage range,
test condition CDF-AEC-Q100-002- ”Human body
±1500 V
model”
2.2 Thermal data
Table 3. Thermal data
Symbol Parameter Min Typ Max Unit
R
th_j-case
Thermal resistance junction to case - - 3 °C/W
Doc ID 1460 Rev 6 3/16
Electrical specifications TDA2040
2.3 Electrical characteristics
The specifications given here were obtained with the conditions VS = ±16 V, T
amb
= 25 °C
unless otherwise specified.
Table 4. Electrical characteristics
Symbol Parameter Test conditions Min Typ Max Unit
V
S
I
d
I
b
V
OS
I
OS
P
o
BW Power bandwidth P
G
vOL
G
v
d Total harmonic distortion
e
N
I
N
R
i
SVRR Supply voltage rejection ratio
h Efficiency
T
j
Supply voltage - ±4.5 - ±20 V
Quiescent drain current
VS = ±4.5 V
= ±20 V
V
S
-
4530100mAmA
Input bias current VS = ±20 V - 0.3 1 μA
Input offset voltage VS = ±20 V - ±2 ±20 mV
Input offset current - - ±200 nA
Output power
d = 0.5%, f = 1 kHz, T
= 4 Ω
R
L
= 4 Ω, VS = ±17
R
L
RL = 8 Ω
RL = 4 Ω
= 4 Ω, VS = ±17
R
L
d = 10%, f = 1 kHz
R
= 4 Ω, VS = ±17
L
= 1 W, RL = 4 Ω - 100 - Hz
o
amb
amb
= 60 °C
20-22
25
12--
= 60 °C
15 1820-
30
Voltage gain (open loop) f = 1 kHz - 80 - dB
Voltage gain (closed loop) f = 1 kHz 29.5 30 30.5 dB
= 0.1 to 10 W, RL = 4 Ω,
P
Input noise voltage
Input noise current
o
f = 40 to 15000 Hz
= 0.1 to 10 W, RL = 4 Ω, f = 1 kHz - 0.03 - %
P
o
B = Curve A
B = 22 Hz to 22 kHz
B = Curve A
B = 22 Hz to 22 kHz
-0.08- %
-
2
-
-
3
10
-
5080-
-
200
Input resistance (pin 1) - 0.5 5 - MΩ
G
= 30 dB, RL = 4 Ω, Rg = 22 kΩ, f = 100 Hz
V
V
ripple
= 0.5 V RMS
40 50 - dB
f = 1 kHz
-
6663-
-
-
Thermal shutdown junction
temperature
= 12 W, RL = 8 Ω
P
o
Po = 22 W, RL = 4 Ω
- - - 145 °C
Wd = 0.5%, f = 15 kHz; T
μV
pA
%
4/16 Doc ID 1460 Rev 6
TDA2040 Electrical specifications
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
Doc ID 1460 Rev 6 5/16
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