E-TDA7385 ,Quad BTL output power amplifier with stand-by and mute inputs, clip detectionapplications.– No bootstrap capacitorsBased on a fully complementary PNP/NPN ■ Protections:configur ..
E-TDA7385 ,Quad BTL output power amplifier with stand-by and mute inputs, clip detectionBlock diagram . . . . 5Figure 2. Pin connection (top view) . . . 5Figure 3. Standard t ..
E-TDA7386 ,Quad BTL output power amplifier with stand-by and mute inputsBlock diagram . . . . 5Figure 2. Pin connection (top view) . . . 5Figure 3. Standard t ..
E-TDA7386 ,Quad BTL output power amplifier with stand-by and mute inputsapplications. Standby functionBased on a fully complementary PNP/NPN Mute functionconfiguration, ..
E-TDA7391PDTR ,Differential input, single BTL output power amplifier with stand-by and clip detectionBlock diagram66####4
E-TDA7385
Quad BTL output power amplifier with stand-by and mute inputs, clip detection
September 2013 Doc ID 8160 Rev 6 1/17
TDA73854 x 42 W quad bridge car radio amplifier
Datasheet production data
Features High output power capability: 4 x 42 W / 4 max. 4 x 23 W / 4 @ 14.4 V , 1 kHz, 10 % Clipping detector Low distortion Low output noise Standby function Mute function Automute at min. supply voltage detection Diagnostics facility for: Clipping Out to GND short Out to VS short Thermal shutdown Low external component count: Internally fixed gain (26 dB) No external compensation No bootstrap capacitors Protections: Output short circuit to GND, to VS, across
the load Very inductive loads Overrating chip temperature with soft
thermal limiter Load dump voltage Fortuitous open GND Reversed battery ESD
DescriptionThe TDA7385 is an AB class audio power
amplifier, packaged in Flexiwatt 25 and designed
for high end car radio applications.
Based on a fully complementary PNP/NPN
configuration, the TDA7385 allows a rail to rail
output voltage swing with no need of bootstrap
capacitors. The extremely reduced boundary
components count allows very compact sets.
The on-board clipping detector simplifies gain
compression operations. The fault diagnostics
makes it possible to detect mistakes during car-
radio assembly and wiring in the car.
Table 1. Device summary Device in ECOPACK® package (see Section 4: Package information on page 15).
Contents TDA73852/17 Doc ID 8160 Rev 6
Contents Block and pin connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 PCB and component layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113.1 Biasing and SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 Standby and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4 Diagnostics facility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.5 Stability and layout considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
TDA7385 List of tables
Doc ID 8160 Rev 6 3/17
List of tables
Table 1. Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
List of figures TDA7385
4/17 Doc ID 8160 Rev 6
List of figures
Figure 1. Block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. Standard test and application circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. Components and top copper layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 5. Bottom copper layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 6. Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 7. Quiescent output voltage vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 8. Output power vs. supply voltage (4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 9. Distortion vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 10. Distortion vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 11. Supply voltage rejection vs. frequency by varying C6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 12. Output noise vs. source resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 13. Power dissipation and efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 14. Input/output biasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 15. Diagnostics circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 16. Clipping detection waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 17. Diagnostics waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 18. Fault detection circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 19. Flexiwatt25 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TDA7385 Block and pin connection diagrams
Doc ID 8160 Rev 6 5/17 Block and pin connection diagrams
Figure 1. Block diagram
Figure 2. Pin connection (top view)
Electrical specifications TDA7385
6/17 Doc ID 8160 Rev 6
2 Electrical specifications
2.1 Absolute maximum ratings
2.2 Thermal data
2.3 Electrical characteristics
VS = 14.4 V; f = 1 kHz; Rg = 600 ; RL = 4 ;Tamb = 25 °C; Refer to the test and application
diagram (Figure 3), unless otherwise specified.
Table 2. Absolute maximum ratings
Table 3. Thermal data
Table 4. Electrical characteristics
TDA7385 Electrical specifications
Doc ID 8160 Rev 6 7/17
Figure 3. Standard test and application circuit Diagnostics output pulled-up to 5 V with 10 k series resistor.
Table 4. Electrical characteristics (continued)
Electrical specifications TDA7385
8/17 Doc ID 8160 Rev 6
2.4 PCB and component layout
Referred to Figure 3: Standard test and application circuit.
Figure 4. Components and top copper layer
Figure 5. Bottom copper layer
TDA7385 Electrical specifications
2.5 Electrical characteristic curves
Figure 6. Quiescent current vs. supply
voltage
Figure 7. Quiescent output voltage vs.
supply voltage
Figure 8. Output power vs. supply voltage
(4)
Figure 9. Distortion vs. output power
Figure 10. Distortion vs. frequency Figure 11. Supply voltage rejection vs.
frequency by varying C6
