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TDA2005R
Single BTL or dual SE output amplifier
September 2013 Doc ID 1451 Rev 6 1/25
TDA200520 W bridge/stereo amplifier for car radio
Datasheet production data
Features High output power:
–Po = 10 + 10 W @ RL = 2 , THD = 10 %
–Po = 20 W @ RL = 4 , THD = 10 %. 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
DescriptionThe TDA2005 is a class B dual audio power
amplifier in Multiwatt11 package specifically
designed for car radio applications.
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 in stereo
applications) obtaining an output power of more
than 20 W (bridge configuration).
Table 1. Device summary
Contents TDA20052/25 Doc ID 1451 Rev 6
Contents Schematic and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.1 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
Application suggestion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164.1 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
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
TDA2005 List of tables
Doc ID 1451 Rev 6 3/25
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
List of figures TDA2005
4/25 Doc ID 1451 Rev 6
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 Figure3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 5. Output offset voltage vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 6. Distortion vs. output power (RL =4 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 7. Distortion vs. output power (RL =3.2 ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
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, RL = 2 and 4 (stereo amplifier). . . . . . . . . . . . . . . . . . 12
Figure 14. Output power vs. supply voltage, RL = 1.6 and 3.2 (stereo amplifier). . . . . . . . . . . . . . . 13
Figure 15. Distortion vs. frequency, RL = 2 and 4 (stereo amplifier) . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 16. Distortion vs. frequency, RL = 1.6 and 3.2 (stereo amplifier) . . . . . . . . . . . . . . . . . . . . . 13
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, GV = 390/1 (stereo amplifier) . . . . . . . . . . . . . 13
Figure 20. Supply voltage rejection vs. C2 and C3, GV = 1000/10 (stereo amplifier) . . . . . . . . . . . 14
Figure 21. Gain vs. input sensitivity RL = 4 (stereo amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 22. Gain vs. input sensitivity RL = 2 (stereo amplifier) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
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 = 42 dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 28. PC board and components layout of Figure27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 (RL = 4 ) . . . . . . . . . . . . . . . . . . . 22
Figure 39. Output power and drain current vs. case temperature (RL = 3.2 ). . . . . . . . . . . . . . . . . . 22
Figure 40. Multiwatt11 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
TDA2005 Schematic and pins connection diagrams
Doc ID 1451 Rev 6 5/25 Schematic and pins connection diagrams
Figure 1. Schematic diagram
Figure 2. Pins connection diagram (top view)
Electrical specifications TDA2005
6/25 Doc ID 1451 Rev 6
2 Electrical specifications
2.1 Absolute maximum ratings
2.2 Thermal data
2.3 Bridge amplifier section
Figure 3. Test and application circuit (bridge amplifier)
Table 2. Absolute maximum ratings The max. output current is internally limited.
Table 3. Thermal data
TDA2005 Electrical specifications
Doc ID 1451 Rev 6 7/25
Figure 4. PC board and components layout of Figure3
2.3.1 Electrical characteristics (bridge application)
Refer to the bridge application circuit T amb = 25°C; Gv = 50dB; R th(heatsink) = 4°C/W unless
otherwise specified.
Table 4. Electrical characteristics (bridge application)
Electrical specifications TDA2005
8/25 Doc ID 1451 Rev 6
Bandwidth filter: 22 Hz to 22 kHz.
Figure 5. Output offset voltage vs. supply
voltage
Figure 6. Distortion vs. output power L =4)
Figure 7. Distortion vs. output power
(RL =3.2 )
Table 4. Electrical characteristics (bridge application) (continued)
TDA2005 Electrical specifications
Doc ID 1451 Rev 6 9/25
2.3.2 Bridge amplifier design
The following considerations can be useful when designing a bridge amplifier.
Where:
VCE sat = output transistors saturation voltage
VS = allowable supply voltage
RL = load impedance
Voltage and current swings are twice for a bridge amplifier in comparison with single ended
amplifier.
In other words, with the same RL the bridge configuration can deliver an output power that is
four times the output power of a single ended amplifier, while, with the same max output
current the bridge configuration can deliver an output power that is four times the output
power of a single ended amplifier, while, with the same max output current the bridge
configuration can deliver an output power that is twice the output power of a single ended
amplifier.
Core must be taken when selecting VS and RL in order to avoid an output peak current
above the absolute maximum rating.
From the expression for IOmax, assuming VS = 14.4 V and VCE sat = 2 V, the minimum load
that can be driven by TDA2005 in bridge configuration is:
The voltage gain of the bridge configuration is given by (see Figure 36):
Table 5. Bridge amplifier design
Electrical specifications TDA2005 Doc ID 1451 Rev 6
For sufficiently high gains (40 to 50 dB) it is possible to put R2 = R4 and R3 = 2R1,
simplifying the formula in:
Figure 8. Bridge configuration
2.4 Stereo amplifier application
Figure 9. Typical stereo application circuit
Table 6. High gain vs. Rx
TDA2005 Electrical specifications
Doc ID 1451 Rev 6 11/25
2.4.1 Electrical characteristics (stereo application)
Refer to the stereo application circuit Tamb = 25 °C; Gv = 50 dB; Rth(heatsink) = 4°C/W unless
otherwise specified
Table 7. Electrical characteristics (stereo application)
Electrical specifications TDA2005
Bandwidth filter: 22 Hz to 22 kHz.
Figure 10. Quiescent output voltage vs.
supply voltage (stereo amplifier)
Figure 11. Quiescent drain current vs. supply
voltage (stereo amplifier)
Figure 12. Distortion vs. output power (stereo
amplifier)
Figure 13. Output power vs. supply voltage,
RL = 2 and 4 (stereo amplifier)
Table 7. Electrical characteristics (stereo application) (continued)
TDA2005 Electrical specifications
Doc ID 1451 Rev 6 13/25
Figure 14. Output power vs. supply voltage,
RL = 1.6 and 3.2 (stereo amplifier)
Figure 15. Distortion vs. frequency, RL = 2 and
4 (stereo amplifier)
Figure 16. Distortion vs. frequency, RL = 1.6
and 3.2 (stereo amplifier)
Figure 17. Supply voltage rejection vs. C3
(stereo amplifier)
Figure 18. Supply voltage rejection vs.
frequency (stereo amplifier)
Figure 19. Supply voltage rejection vs. C2 and
C3, GV = 390/1 (stereo amplifier)
