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Partno Mfg Dc Qty AvailableDescript
TDA7492PSTN/a6000avai25 W + 25 W dual BTL class-D audio amplifier
TDA7492P13TRSTN/a789avai25 W + 25 W dual BTL class-D audio amplifier


TDA7492P ,25 W + 25 W dual BTL class-D audio amplifierApplications information . . . . 186.1 Mode selection . . . . . 186.2 Gain setting ..
TDA7492P13TR ,25 W + 25 W dual BTL class-D audio amplifierblock diagram (showing one channel only) . . . . . . . 5Figure 2. Pin connections (top view, PCB ..
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TDA7494S ,10W AMPLIFIERTDA7494S®10W AMPLIFIER10W OUTPUT POWER R = 8Ω, LMULTIPOWER BI50II TECHNOLOGY@ THD = 10% VCC = 28VST ..
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THS4001ID ,270-MHz Voltage-Feedback AmplifierTHS4001270-MHz HIGH-SPEED AMPLIFIERSLOS206A– DECEMBER 1997 – REVISED MARCH 1999D PACKAGE* Very High ..
THS4011CD ,290-MHz Low-Distortion Voltage-Feedback AmplifierThese devices have limited built-in ESD protection. The leads should be shorted together or the dev ..
THS4011CDG4 ,290-MHz Low-Distortion Voltage-Feedback Amplifier 8-SOIC .(2) The D and DGN packages are available taped and reeled. Add an R suffix to the device type (i.e ..
THS4011CDGN ,290-MHz Low-Distortion Voltage-Feedback AmplifierFEATURESTHS4011 THS4012†2• High Speed D, DGN, OR JG PACKAGE D OR DGN PACKAGE(TOP VIEW) (TOP VIEW)– ..
THS4011CDGNR ,290-MHz Low-Distortion Voltage-Feedback AmplifierBLOCK DIAGRAMNull128IN− −6OUT3IN+ +Figure 1. THS4011 – Single ChannelVCC281IN− −11OUT31IN+ +62IN−−7 ..


TDA7492P-TDA7492P13TR
25 W + 25 W dual BTL class-D audio amplifier
February 2014 DocID15068 Rev 6 1/27
TDA7492P

25 W + 25 W dual BTL class-D audio amplifier
Datasheet - production data
Features
25 W + 25 W continuous output power at
THD = 10% with VCC = 20 V and RL = 8  Wide-range single-supply operation (8 - 26 V) High efficiency ( = 90%) Four selectable, fixed gain settings of
nominally 21.6 dB, 27.6 dB, 31.1 dB and
33.6 dB Differential inputs minimize common-mode
noise Standby and mute features Short-circuit protection Thermal overload protection Externally synchronizable ECOPACK® , environmentally-friendly package
Description

The TDA7492P 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 heatsink is required.

Table 1. Device summary
Contents TDA7492P
2/27 DocID15068 Rev 6
Contents Device block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Pin list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Characterization curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Characterizations for 6  loads with 18 V . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 Characterizations for 8  loads with 20 V . . . . . . . . . . . . . . . . . . . . . . . . 13 Applications circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.1 Mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.2 Gain setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.3 Input resistance and capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.4 Internal and external clocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.4.1 Master mode (internal clock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.4.2 Slave mode (external clock) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.5 Output low-pass filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.6 Protection functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.7 Diagnostic output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
DocID15068 Rev 6 3/27
TDA7492P List of tables
List of tables

Table 1. Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Pin description list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5. Electrical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 6. Mode settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 7. Gain settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 8. How to set up SYNCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 9. PowerSSO-36 EPD dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 10. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
List of figures TDA7492P
4/27 DocID15068 Rev 6
List of figures

Figure 1. Internal block diagram (showing one channel only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pin connections (top view, PCB view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Output power vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 4. THD at 1 kHz vs. output power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 5. THD at 100 Hz vs. output power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 6. THD at 1 W vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 7. Frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 8. Crosstalk vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 9. FFT 0 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 10. FFT -60 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 11. Output power vs supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 12. THD at 1 kHz vs output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 13. THD at 100 Hz vs output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 14. THD at 1 W vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 15. Frequency response. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 16. Crosstalk vs frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 17. FFT 0 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 18. FFT -60 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 19. Test board (SZ-LAB-TDA7492P) layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 20. Applications circuit for class-D amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 21. Standby and mute circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 22. Turn-on/off sequence for minimizing speaker “pop” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 23. Device input circuit and frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 24. Master and slave connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 25. Typical LC filter for a 8  speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 26. Typical LC filter for a 4  speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 27. Behavior of pin DIAG for various protection conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 28. PowerSSO-36 EPD outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
DocID15068 Rev 6 5/27
TDA7492P Device block diagram Device block diagram

Figure 1 shows the block diagram of one of the two identical channels of the TDA7492P.
Figure 1. Internal block diagram (showing one channel only)
Pin description TDA7492P
6/27 DocID15068 Rev 6
2 Pin description
2.1 Pinout
Figure 2. Pin connections (top view, PCB view)
DocID15068 Rev 6 7/27
TDA7492P Pin description
2.2 Pin list

Table 2. Pin description list
Electrical specifications TDA7492P
8/27 DocID15068 Rev 6
3 Electrical specifications
3.1 Absolute maximum ratings


3.2 Thermal data


3.3 Electrical specifications

Unless otherwise stated, the results in Table 5 below are given for the conditions: CC =20V, RL (load) = 8 , R OSC = R3 = 39 k, C8 = 100 nF, f = 1 kHz, GV = 21.6 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
DocID15068 Rev 6 9/27
TDA7492P Electrical specifications
fSW = 106 / ((16 * ROSC + 182) * 4) kHz, fSYNCLK = 2 * fSW with R3 = 39 k, see Figure 20. fSW = fSYNCLK / 2 with the frequency of the external oscillator.
Table 5. Electrical specifications (continued)
Characterization curves TDA7492P
4 Characterization curves

The following characterizations were made using the SZ-LAB-TDA7492P demo board. The
4.1
TDA7492P
Characterization curves
TDA7492P
4.2
Characterization curves
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