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TDA7491HVN/a12avai20W+20W dual BTL class-D audio amplifier
TDA7491HV13TRSTN/a4248avai20W+20W dual BTL class-D audio amplifier


TDA7491HV13TR ,20W+20W dual BTL class-D audio amplifierTDA7491HV20 W + 20 W dual BTL class-D audio amplifierDatasheet - production dataDescriptionThe TDA7 ..
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TDA7491LP13TR ,5W+5W dual BTL class-D audio amplifierApplications circuit . . 245.2 Mode selection . . . . . 255.3 Gain setting . . . . ..
TDA7491P ,10W+10W dual BTL class-D audio amplifierblock diagram (one channel only) . . . . . . 7Figure 2. Pin connection (top view, PCB view) ..
TDA7491P13TR ,10W+10W dual BTL class-D audio amplifierApplications circuit . . 295.2 Mode selection . . . . . 305.3 Gain setting . . . . ..
TDA7491P13TR ,10W+10W dual BTL class-D audio amplifierfeaturesLCD TVs and monitors.■ Short-circuit protectionThanks to the high efficiency and ■ Thermal ..
THS3201DGNR ,1.8GHz Current Feedback Amplifiermaximum ratings under any condition is limited by the constraints of the silicon process. Stresses ..
THS3201DRG4 ,1.8GHz Current Feedback Amplifier 8-SOIC -40 to 85MAXIMUM RATINGS(1)Over operating free-air temperature range unless otherwise noted.UNITV Supply vol ..
THS3201MDGNREP ,Enhanced Product 1.8-Ghz Low Distortion Current Feedback Amplifier 8-MSOP-PowerPAD -55 to 125FEATURESDESCRIPTION2• Unity Gain Bandwidth: 1.8 GHz• High Slew Rate: 6700 V/μs (G = 2 V/V,The THS32 ..
THS3202 ,2GHz Current Feedback AmplifierThis integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated cir ..
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THS3202DGN ,2GHz Current Feedback Amplifier SLOS242F –SEPTEMBER 2002–REVISED JANUARY 2010PACKAGE DISSIPATION RATINGS(2)POWER RATING(1)qqJC JAP ..


TDA7491HV-TDA7491HV13TR
20W+20W dual BTL class-D audio amplifier
February 2014 DocID14242 Rev 7 1/43
TDA7491HV

20 W + 20 W dual BTL class-D audio amplifier
Datasheet - production data
Features
20 W + 20 W continuous output power: L =8 , THD = 10% at VCC = 18 V Wide-range single-supply operation (5 V - 18 V) High efficiency ( = 90%) Four selectable, fixed gain settings of
nominally 20 dB, 26 dB, 30 dB and 32 dB Differential inputs minimize common mode
noise No ‘pop’ at turn-on/off Standby and mute features Short-circuit protection Thermal overload protection Externally synchronizable
Description

The TDA7491HV is a dual BTL class-D audio
amplifier with single power supply designed for
LCD TVs and monitors.
Thanks to the high efficiency and
exposed-pad-down (EPD) package no separate
heatsink is required.
The TDA7491HV is pin-to-pin compatible with the
TDA7491P and TDA7491LP.

Table 1. Device summary
Contents TDA7491HV
2/43 DocID14242 Rev 7
Contents Device block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1 Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Pin list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Characterization curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1 With 4  load at VCC = 14 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 With 6  load at VCC = 16 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3 With 8  load at VCC = 18 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.4 T est board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Applications circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.1 Mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.2 Gain setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.3 Input resistance and capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.4 Internal and external clocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
7.4.1 Master mode (internal clock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
7.4.2 Slave mode (external clock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
7.5 Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.6 Reconstruction low-pass filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
7.7 Protection functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.8 Diagnostic output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.9 Heatsink requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
DocID14242 Rev 7 3/43
TDA7491HV Contents Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
List of tables TDA7491HV
4/43 DocID14242 Rev 7
List of tables

Table 1. Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pin description list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 5. Electrical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 6. PowerSSO-36 EPD dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 7. Mode settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 8. Gain settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 9. How to set up SYNCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Table 10. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
DocID14242 Rev 7 5/43
TDA7491HV List of figures
List of figures

Figure 1. Internal block diagram (one channel only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 2. Pin connections (top view, PCB view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 3. Output power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 4. THD vs. output power (1 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 5. THD vs. output power (100 Hz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 6. THD vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 7. Frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 8. Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 9. FFT (0 dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 10. FFT (-60 dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 11. Power supply rejection ratio vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 12. Power dissipation and efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 13. Closed-loop gain vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 14. Current consumption vs. voltage on pin MUTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 15. Attenuation vs. voltage on pin MUTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 16. Current consumption vs. voltage on pin STBY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 17. Attenuation vs. voltage on pin STBY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 18. Output power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 19. THD vs. output power (1 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 20. THD vs. output power (100 Hz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 21. THD vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 22. Frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 23. Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 24. FFT (0 dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 25. FFT (-60 dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 26. Power supply rejection ratio vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 27. Power dissipation and efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 28. Closed-loop gain vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 29. Current consumption vs. voltage on pin MUTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 30. Attenuation vs. voltage on pin MUTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 31. Current consumption vs. voltage on pin STBY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 32. Attenuation vs. voltage on pin STBY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 33. Output power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 34. THD vs. output power (1 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 35. THD vs. output power (100 Hz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 36. THD vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 37. Frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 38. Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 39. FFT (0 dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 40. FFT (-60 dB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 41. Power supply rejection ratio vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 42. Power dissipation and efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 43. Closed-loop gain vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 44. Current consumption vs. voltage on pin MUTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 45. Attenuation vs. voltage on pin MUTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 46. Current consumption vs. voltage on pin STBY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 47. Attenuation vs. voltage on pin STBY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 48. Test board (TDA7491HV) layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
List of figures TDA7491HV
6/43 DocID14242 Rev 7
Figure 49. PowerSSO-36 EPD outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 50. Applications circuit for class-D amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 51. Standby and mute circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 52. Turn-on/off sequence for minimizing speaker “pop” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 53. Device input circuit and frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 54. Master and slave connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 55. Unipolar PWM output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 56. Typical LC filter for an 8  speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 57. Typical LC filter for a 4  speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 58. Behavior of pin DIAG for various protection conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 59. Power derating curves for PCB used as heatsink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
DocID14242 Rev 7 7/43
TDA7491HV Device block diagram Device block diagram

Figure 1 shows the block diagram of one of the two identical channels of the TDA7491HV.
Figure 1. Internal block diagram (one channel only)
Pin description TDA7491HV
8/43 DocID14242 Rev 7
2 Pin description
2.1 Pinout
Figure 2. Pin connections (top view, PCB view)
DocID14242 Rev 7 9/43
TDA7491HV Pin description
2.2 Pin list

Table 2. Pin description list
Electrical specifications TDA7491HV
10/43 DocID14242 Rev 7
3 Electrical specifications
3.1 Absolute maximum ratings


3.2 Thermal data

Refer also to Section 7.9: Heatsink requirements on page 40.

3.3 Electrical specifications

Unless otherwise stated, the results in Table 5 below are given for the conditions: CC =18 V, RL (load) = 8 , R OSC = R3 = 39 k, C8 = 100 nF, f = 1 kHz, GV = 20 dB, and amb =25°C.

Table 3. Absolute maximum ratings
Table 4. Thermal data
FR4 with vias to copper area of 9 cm2.
Table 5. Electrical specifications
DocID14242 Rev 7 11/43
TDA7491HV Electrical specifications
Refer to Section 7.4: Internal and external clocks on page36.
Table 5. Electrical specifications (continued)
Characterization curves TDA7491HV
12/43 DocID14242 Rev 7
4 Characterization curves

The following characterization curves were made using the TDA7491HV demo board. The
LC filter for the 4- load uses components of 15 µH and 470 nF, whilst that for the 6- load
4.1 With 4  load at V
TDA7491HV
14/43
TDA7491HV
Characterization curves
16/43
DocID14242 Rev 7 17/43
TDA7491HV
4.2 With 6  load at V
Characterization curves
DocID14242 Rev 7 19/43
TDA7491HV
20/43
TDA7491HV
Characterization curves
22/43 DocID14242 Rev 7
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