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ST MICROELECTRONICS
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TDA 2005
Datasheet
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ST MICROELECTRONICS TDA 2005 Datasheet

20 W bridge/stereo amplifier for car radio
Features
■ High output power:
–P
= 10 + 10 W @ RL = 2 Ω, THD = 10 %
o
–P
= 20 W @ RL = 4 Ω , THD = 10 %.
o
■ Protection against:
– Output DC and AC short circuit to ground – Overrating chip temperature – Load dump voltage surge – Fortuitous open ground – Very inductive loads
■ Loudspeaker protection during short circuit for
one wire to ground
Description
The TDA2005 is a class B dual audio power amplifier in Multiwatt11 package specifically designed for car radio applications.

Table 1. Device summary

TDA2005
Multiwatt11
Power booster amplifiers can be easily designed using this device that provides a high current capability (up to 3.5 A) and can drive very low impedance loads (down to 1.6 Ω in stereo applications) obtaining an output power of more than 20 W (bridge configuration).
Order code Package Packing
TDA2005R Multiwatt11 Tube
(1)
(1)
Multiwatt11 Tube
Multiwatt11 Tube
www.st.com
TDA2005M
TDA2005S
1. Do not use for New Design.
January 2010 Doc ID 1451 Rev 4 1/25
1
Contents TDA2005
Contents
1 Schematic and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . 5
2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Bridge amplifier section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3.1 Electrical characteristics (bridge application) . . . . . . . . . . . . . . . . . . . . . . 7
2.3.2 Bridge amplifier design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Stereo amplifier application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4.1 Electrical characteristics (stereo application) . . . . . . . . . . . . . . . . . . . . . 11
3 Application suggestion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1 Built-in protection systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.1.1 Load dump voltage surge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.1.2 Short circuit (AC and DC conditions) . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1.3 Polarity inversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1.4 Open ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1.5 Inductive load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1.6 DC voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1.7 Thermal shut-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1.8 Loudspeaker protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2/25 Doc ID 1451 Rev 4
TDA2005 List of tables
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 4. Electrical characteristics (bridge application) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 5. Bridge amplifier design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 6. High gain vs. Rx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 7. Electrical characteristics (stereo application) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 8. Recommended values of the component of the bridge application circuit . . . . . . . . . . . . . 15
Table 9. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Doc ID 1451 Rev 4 3/25
List of figures TDA2005
List of figures
Figure 1. Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pins connection diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. Test and application circuit (bridge amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 4. PC board and components layout of Figure 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 5. Output offset voltage vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 6. Distortion vs. output power (R Figure 7. Distortion vs. output power (R
Figure 8. Bridge configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 9. Typical stereo application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 10. Quiescent output voltage vs. supply voltage (stereo amplifier). . . . . . . . . . . . . . . . . . . . . . 12
Figure 11. Quiescent drain current vs. supply voltage (stereo amplifier) . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 12. Distortion vs. output power (stereo amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 13. Output power vs. supply voltage, R Figure 14. Output power vs. supply voltage, R Figure 15. Distortion vs. frequency, R Figure 16. Distortion vs. frequency, R
Figure 17. Supply voltage rejection vs. C3 (stereo amplifier). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 18. Supply voltage rejection vs. frequency (stereo amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 19. Supply voltage rejection vs. C2 and C3, G Figure 20. Supply voltage rejection vs. C2 and C3, G Figure 21. Gain vs. input sensitivity R Figure 22. Gain vs. input sensitivity R
Figure 23. Total power dissipation and efficiency vs. output power (bridge) . . . . . . . . . . . . . . . . . . . . 14
Figure 24. Total power dissipation and efficiency vs. output power (stereo) . . . . . . . . . . . . . . . . . . . . 14
Figure 25. Bridge amplifier without boostrap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 26. PC board and components layout of Figure 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 27. Low cost bridge amplifier (GV = 42dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 28. PC board and components layout of Figure 27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 29. 10 + 10 W stereo amplifier with tone balance and loudness control. . . . . . . . . . . . . . . . . . 18
Figure 30. Tone control response (circuit of Figure 29) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 31. 20 W bus amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 32. Simple 20 W two way amplifier (FC = 2 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 33. Bridge amplifier circuit suited for low-gain applications (GV = 34 dB) . . . . . . . . . . . . . . . . 20
Figure 34. Example of muting circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 35. Suggested LC network circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 36. Voltage gain bridge configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 37. Maximum allowable power dissipation vs. ambient temperature . . . . . . . . . . . . . . . . . . . . 22
Figure 38. Output power and drain current vs. case temperature (R Figure 39. Output power and drain current vs. case temperature (R
Figure 40. Multiwatt11 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
= 4 Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
L
= 3.2 Ω). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
L
= 2 and 4 Ω (stereo amplifier). . . . . . . . . . . . . . . . . . 12
L
= 1.6 and 3.2Ω (Stereo amplifier) . . . . . . . . . . . . . . . 13
= 2 and 4 Ω (stereo amplifier) . . . . . . . . . . . . . . . . . . . . . . . . 13
L
= 1.6 and 3.2 Ω (stereo amplifier) . . . . . . . . . . . . . . . . . . . . . 13
L
= 4 Ω (stereo amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
L
= 2 Ω (stereo amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
L
L
= 390/1Ω (stereo amplifier) . . . . . . . . . . . . . . 13
V
= 1000/10Ω (stereo amplifier) . . . . . . . . . . . . 14
V
= 4 Ω) . . . . . . . . . . . . . . . . . . . 22
L
= 3.2 Ω) . . . . . . . . . . . . . . . . . . 22
L
4/25 Doc ID 1451 Rev 4
TDA2005 Schematic and pins connection diagrams

1 Schematic and pins connection diagrams

Figure 1. Schematic diagram

Figure 2. Pins connection diagram (top view)

11
10
9
8
7
6
5
4
3
2
1
TAB CONNECTED TO PIN 6
Doc ID 1451 Rev 4 5/25
D95AU318
BOOTSTRAP(1)
OUTPUT(1)
+V
S
OUTPUT(2)
BOOTSTRAP(2)
GND
INPUT+(2)
INPUT-(2)
SVRR
INPUT-(1)
INPUT+(1)
Electrical specifications TDA2005

2 Electrical specifications

2.1 Absolute maximum ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit
Peak supply voltage (50 ms) 40
V
S
Operating supply voltage 18
VDC supply voltage 28
(1)
Io
Output peak current (non repetitive t = 0.1 ms) 4.5
Output peak current (repetitive f ≥10 Hz) 3.5
P
tot
T
, T
stg
1. The max. output current is internally limited.
Power dissipation at T
Storage and junction temperature -40 to 150 °C
j
case

2.2 Thermal data

Table 3. Thermal data

Symbol Parameter Value Unit
R
th-j-case
Thermal resistance junction-to-case max 3 °C/W

2.3 Bridge amplifier section

Figure 3. Test and application circuit (bridge amplifier)

A
= 60 °C 20 W
6/25 Doc ID 1451 Rev 4
TDA2005 Electrical specifications

Figure 4. PC board and components layout of Figure 3

2.3.1 Electrical characteristics (bridge application)

Refer to the bridge application circuit T
= 25°C; Gv = 50dB; R
amb
th(heatsink)
= 4°C/W unless
otherwise specified.
Table 4. Electrical characteristics (bridge application)
Symbol Parameter Test condition Min. Typ. Max. Unit
V
S
V
os
I
d
P
o
THD Total harmonic distortion
V
i
R
i
f
L
f
H
Gv Closed loop voltage gain f = 1 kHz - 50 - dB
e
N
SVR Supply voltage rejection
Supply voltage - 8 - 18 V
Output offset voltage (between pin 8 and pin 10)
Total quiescent drain current
= 14.4 V
V
S
VS = 13.2 V
V
= 14.4 V; RL = 4 Ω
S
= 13.2 V; RL = 3.2 Ω
V
S
--
-
75 70
150 150
150 150
f = 1 kHz, THD = 10 %
Output power
VS = 14.4 V; RL = 4 Ω VS = 14.4 V; RL = 3.2 Ω
= 13.2 V; RL = 3.2 Ω
V
S
f = 1 kHz; V
= 4 Ω; Po = 50 mW to 15 W;
R
L
f = 1 kHz; V R
= 3.2 Ω; Po = 50m W to
L
= 14.4 V;
S
= 13.2 V;
S
18 20 17
--1%
--1%
20 22 19
-W
13 W;
f = 1 kHz
Input sensitivity
RL = 4 Ω; Po = 2 W;
= 3.2 Ω; Po = 2 W
R
L
-98-mW
Input resistance f = 1 kHz 70 - - kΩ
Low frequency roll off (-3 dB) RL = 3.2 Ω --40Hz
High frequency roll off (-3 dB) RL = 3.2 Ω 20 - - KHz
Total Input noise voltage Rg = 10 Ω
V
ripple
= 10 kΩ; C4 = 10 μF
R
g
(1)
= 0.5 V; f
ripple
=100 Hz
-310μV
45 55 - dB
mV mV
mA mA
Doc ID 1451 Rev 4 7/25
Electrical specifications TDA2005
Table 4. Electrical characteristics (bridge application) (continued)
Symbol Parameter Test condition Min. Typ. Max. Unit
f = 1 kHz; VS = 14.4 V;
= 4 Ω; Po = 20 W;
R
L
= 3.2 Ω; Po = 22 W
η Efficiency
R
L
f = 1 kHz; V RL = 3.2 Ω; Po = 19 W
SVR Supply voltage rejection
T
V
OSH
1. Bandwidth filter: 22 Hz to 22 kHz.
Thermal shut-down junction
j
temperature
Output voltage with one side of the speaker shorted to ground
f = 100 Hz; V
= 10 kΩ; RL = 4 Ω
R
g
f = 1 kHz; V
= 4 Ω; P
R
L
= 14.4 V; RL = 4 Ω
V
S
VS = 13.2 V; RL = 3.2 Ω
Figure 5. Output offset voltage vs. supply
voltage
V
os
(mV)
100
80
= 13.2 V;
S
= 0.5 V;
ripple
= 14.4V;
S
= 13 W
tot
Figure 6. Distortion vs. output power (RL=
4 Ω)
d
(%)
10
-6060-
-58-
30 36 - dB
- 145 - °C
--2V
Vs = 14.4 V
Gv = 50 dB R
= 4 Ω
L
f = 1 kHz
%
60
40
20
0
8
10
12
14 16
Vs (V)
Figure 7. Distortion vs. output power (RL=
3.2 Ω)
d
(%)
Vs = 13.2 V
Gv = 50 dB R
= 3.2 Ω
L
10
1
0.1
f = 1 kHz
110
Po (W)
1
0.1
110
Po (W)
8/25 Doc ID 1451 Rev 4
+ 17 hidden pages
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