TDA749213TR STMicroelectronics, TDA749213TR Datasheet
TDA749213TR
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TDA749213TR Summary of contents
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... Thermal overload protection Externally synchronizable ® ECOPACK , environmentally-friendly package Table 1. Device summary Order code Operating temp. range TDA7492 °C TDA749213TR °C September 2009 dual BTL class-D audio amplifier = Description The TDA7492 is a dual BTL class-D audio amplifier with single power supply designed for LCD TVs and monitors ...
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Contents Contents 1 Device block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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TDA7492 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of tables List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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TDA7492 List of figures Figure 1. Internal block diagram (showing one channel only ...
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Device block diagram 1 Device block diagram Figure 1 shows the block diagram of one of the two identical channels of the TDA7492. Figure 1. Internal block diagram (showing one channel only) 6/32 Doc ID 14926 Rev 4 TDA7492 ...
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TDA7492 2 Pin description 2.1 Pin-out Figure 2. Pin connection (top view, PCB view) 36 VSS 35 SVCC 34 VREF 33 INNB 32 INPB 31 GAIN1 30 GAIN0 29 SVR 28 DIAG 27 SGND 26 VDDS 25 SYNCLK 24 ROSC ...
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Pin description 2.2 Pin list Table 2. Pin description list Number Name 1 SUB_GND 2,3 OUTPB 4,5 PGNDB 6,7 PVCCB 8,9 OUTNB 10,11 OUTNA 12,13 PVCCA 14,15 PGNDA 16,17 OUTPA 18 PGND 19 VDDPW 20 STBY 21 MUTE 22 INPA ...
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TDA7492 3 Electrical specifications 3.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol V DC supply voltage for pins PVCCA, PVCCB, SVCC CC Voltage limits for input pins STBY, MUTE, INNA, INPA INNB, INPB, GAIN0, GAIN1 T ...
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Electrical specifications Table 5. Electrical specifications (continued) Symbol Undervoltage protection V UVP threshold R Power transistor on resistance dsON P Output power o P Output power o P Dissipated power D η Efficiency THD Total harmonic distortion G Closed-loop gain ...
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TDA7492 4 Characterization curves The general test conditions used for producing the characterization curves can be summarized as follows: Test board: SZ LAB TDA7492 slug-up demo board Test frequency: 1 kHz (also 100 Hz for THD vs. output power only) ...
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Characterization curves Figure 4. THD vs. output power (1 kHz) Test conditions: Vcc = Ω, Rosc = 39 kΩ, Cosc = 100 nF kHz dB, Tamb = 25r C ...
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TDA7492 Figure 6. THD vs. frequency Test conditions: Vcc = Ω, Rosc = 39 kΩ, Cosc = 100 nF kHz dB Tamb = 25r C ...
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Characterization curves Figure 9. FFT performance (0 dB) Test conditions: Vcc = Ω, Rosc = 39 kΩ, Cosc = 100 nF kHz dB Tamb = ...
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TDA7492 4.2 Characterizations for 8-Ω loads Figure 11. Output power vs. supply voltage Test conditions: Vcc = Ω, Rosc = 39 kΩ, Cosc = 100 nF kHz ...
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Characterization curves Figure 13. THD vs. output (100 Hz) Test conditions: Vcc = Ω, Rosc = 39 kΩ, Cosc = 100 nF 100 Hz dB, Tamb = 25r C Specification ...
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TDA7492 Figure 16. Crosstalk Test conditions: Vcc = Ω, Rosc = 39 kΩ, Cosc = 100 nF kHz dB Tamb = 25r C Specification limit: ...
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Characterization curves 4.3 Characterizations for 4-Ω loads Figure 19. Output power vs. supply voltage Test conditions: Vcc = Ω, Rosc = 39 kΩ, Cosc = 100 nF kHz ...
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TDA7492 Figure 21. THD vs. output (100 Hz) Test conditions: Vcc = Ω, Rosc = 39 kΩ, Cosc = 100 nF 100 Hz dB, Tamb = 25r C Specification limit: ...
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Characterization curves Figure 24. Crosstalk Test conditions: Vcc = Ω, Rosc = 39 kΩ, Cosc = 100 nF kHz dB kHz ...
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TDA7492 4.4 Test board Figure 27. Test board layout Doc ID 14926 Rev 4 Characterization curves 21/32 ...
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Applications circuit 5 Applications circuit Figure 28. Applications circuit for class-D amplifier Input settings for standby, mute and play: STBY : MUTE 3 ...
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TDA7492 6 Applications information 6.1 Mode selection The three operating modes of the TDA7492 are set by the two inputs, STBY (pin 20) and MUTE (pin 21). Standby mode: all circuits are turned off, very low current consumption. Mute mode: ...
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Applications information 6.2 Gain setting The gain of the TDA7492 is set by the two inputs, GAIN0 (pin 30) and GAIN1 (pin31). Internally, the gain is set by changing the feedback resistors of the amplifier. Table 7. Gain settings GAIN0 ...
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TDA7492 6.4 Internal and external clocks The clock of the class-D amplifier can be generated internally or can be driven by an external source. If two or more class-D amplifiers are used in the same system recommended that ...
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Applications information 6.5 Output low-pass filter To avoid EMI problems, it may be necessary to use a low-pass filter before the speaker. The cutoff frequency should be larger than 22 kHz and much lower than the output switching frequency. It ...
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TDA7492 6.6 Protection function The TDA7492 is fully protected against overvoltages, undervoltages, overcurrents and thermal overloads as explained here. Overvoltage protection (OVP) If the supply voltage exceeds the value for V page 9 the overvoltage protection is activated which forces ...
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Applications information 6.8 Heatsink requirements As with most amplifiers, the power dissipated within the device depends primarily on the supply voltage, the load impedance and the output modulation level. The maximum estimated power dissipation for the TDA7492 is around 7 ...
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TDA7492 7 Package mechanical data The TDA7492 comes in a 36-pin PowerSSO package with exposed pad up (EPU). Figure 36 shows the package outline and Figure 36. PowerSSO-36 EPU outline drawing Table 9 gives the dimensions. Doc ID 14926 Rev ...
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Package mechanical data Table 9. PowerSSO-36 EPU dimensions Symbol Min A 2. 0.18 c 0.23 D 10. 10. 0.60 ...
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TDA7492 8 Revision history Table 10. Document revision history Date 30-Jul-2008 4-Nov-2008 15-Apr-2009 03-Sep-2009 Revision 1 Initial release. Updated V details Updated Chapter 4: Characterization curves on page Updated supply operating range ...
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