TDA749313TR STMicroelectronics, TDA749313TR Datasheet
TDA749313TR
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TDA749313TR Summary of contents
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... Thermal-overload protection Externally synchronizable Table 1. Device summary Operating temperature Order codes TDA7493 °C TDA749313TR °C November 2010 3-watt + 3-watt dual BTL class-D audio amplifier = 5 V (filterless (with filter) Description The TDA7493 is a dual BTL class-D audio amplifier, specially designed for LCD TV, LCD monitors or small speakers on cradles with single-supply operation ...
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Contents Contents 1 Device block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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TDA7493 List of figures Figure 1. TDA7493 block diagram (only one of two channels shown ...
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List of tables List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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TDA7493 1 Device block diagram Figure 1 shows the block diagram of one of the two identical channels of the TDA7493. Figure 1. TDA7493 block diagram (only one of two channels shown) SVCC SGND ROSC INP INN GAIN0 GAIN1 SYNCLK ...
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Pin description 2 Pin description 2.1 Pin-out Figure 2. Pin connection (top view) The exposed pad is the device ground and must be connected appropriately 6/30 INNR 1 INNL 2 INPR INPL SVR 3 STANDBY PVCCPR 4 PVCCPL OUTPR 5 ...
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TDA7493 2.2 Pin list Table 2. Pin list Number Name 1 INNL 2 INPL 3 STANDBY 4 PVCCPL 5 OUTPL 6 PGNDPL 7 PGNDNL 8 OUTNL 9 PVCCNL 10 SYNCLK 11 ROSC 12 SGND 13 SVCC 14 GAIN0 15 GAIN1 ...
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Applications circuit Figure 3. Typical application circuit Jumper 5 for single-ended input Jumper 6 for single-ended input PVCCPL SVCC OUTPL STANDBY PGNDPL INPL PVCCNL INNL OUTNL ROSC TDA7493 PGNDNL GAIN0 PVCCPR GAIN1 OUTPR SYNCLK INPR PGNDPR INNR PVCCNR SVR ...
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TDA7493 4 Electrical specifications 4.1 Absolute maximum ratings Table 3. Absolute maximum rating Symbol DC supply on pins PVCCPL, PVCCPR, PVCCNL PVCCNR, SVCC Standby DC supply on pins PVCCPL, PVCCPR, V CC_STANDBY PVCCNL, PVCCNR, SVCC Input on pins ...
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Electrical specifications Table 5. Electrical characteristics (continued) Symbol Pd Dissipated power η Efficiency Total harmonic THD distortion Thermal shut-down Tj junction temperature G Closed loop gain V GV Gain matching CT Crosstalk eN Total output noise Ri Input resistance Supply ...
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TDA7493 5 Applications information 5.1 Mode selection Pin STANDBY selects the operating mode, namely standby or play. In standby mode, all the circuits are turned off and there is very low leakage current. In play mode, the amplifiers are powered ...
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Applications information 5.3 Input resistance and capacitance The input impedance is set by an internal resistor, Ri, of value 60 kΩ. An input coupling capacitor (Ci) is required on each input line. These two components together form a high-pass filter ...
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TDA7493 5.4 Filterless modulation The modulation scheme of BTL is called unipolar PWM output. The differential output voltage changes between zero and +V traditional bipolar PWM output between +V scheme effectively doubles the switching frequency of the differential output waveform. ...
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Figure 7. Schematic for the filterless configuration 8 8 Table 8. Resistance values for input configuration SVCC PVCCPL STANDBY OUTPL PGNDPL INPL INNL PVCCNL OUTNL ROSC TDA7493 GAIN0 PGNDNL PVCCPR GAIN1 SYNCLK OUTPR PGNDPR INPR INNR PVCCNR OUTNR SVR PGNDNR ...
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TDA7493 5.5 Internal clock and external clock The clock of the class-D amplifier can be generated internally or it can be synchronous with the external clock. If two or more class-D amplifiers are used in the same system ...
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Applications information 5.6 Output low-pass filter To avoid EMI problems, a low-pass filter can be inserted before the speaker. The cut-off frequency of the filter should be higher than 22 kHz and much lower than the switching frequency. The component ...
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TDA7493 5.7 Protection function The TDA7493 has four types of protection: overvoltage (OV), undervoltage (UV), thermal (OT) and short circuit (SC): overvoltage protection (OVP) for the supply V undervoltage protection (UVP) for the supply V thermal protection (OTP) for the ...
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Applications information 5.8.1 Single-ended input application To use the device with a single-ended source, one input is AC connected to ground (via a capacitor) and the other input is connected to the audio source. This is designed as a fully ...
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TDA7493 The disadvantages of the anti-pop configuration are given below: The input impedance or the load of audio source is no longer 2 * Rin as in the case of differential input configuration but R0. It means the load effect ...
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Electrical characterization curves 6 Electrical characterization curves 6.1 For the configuration with LC filter Test setup as given in Test conditions V Figure 15. THD vs output power at 1 kHz Figure 16. THD vs output ...
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TDA7493 Figure 18. THD vs frequency Figure 19. Output frequency response Figure 20. Crosstalk vs frequency THD 5 (%) 2 1 0.5 0.2 0.1 0.05 0.02 0.01 0.005 0.002 0.001 ...
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Electrical characterization curves Figure 21. FFT (0 dB) Figure 22. FFT (-60 dB) 22/30 +10 FFT +0 (dB) -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 20 50 100 200 500 1k Frequency ...
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TDA7493 6.2 For the configuration without filter Test setup as given in Test conditions V Figure 23. THD vs output power at 1 kHz Figure 24. THD vs output power at 100 Hz Figure 25. THD vs frequency at 100 ...
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Electrical characterization curves Figure 26. THD vs frequency Figure 27. Frequency response Figure 28. Crosstalk vs frequency Crosstalk (dB) 24/30 10 THD 5 (%) 2 1 0.5 0.2 0.1 0.05 0.02 ...
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TDA7493 Figure 29. FFT (0 dB) Figure 30. FFT (-60 dB) +10 FFT +0 (dB) -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 20 50 100 200 500 1k frequency (Hz) +10 FFT ...
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Package mechanical data 7 Package mechanical data The TDA7493 comes in a 24-pin HTSSOP exposed-pad-down package. The outline is shown in Figure 31 The package code is YO and the JEDEC/EIAJ reference number is JEDEC MO-153-ADT. Figure 31. HTSSOP24 EPD ...
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TDA7493 Table 10. HTSSOP24 EPD dimensions Reference Min 0.80 b 0.19 c 0.09 D 7.70 D1 4.80 E 6.20 E1 4. aaa - Dimension ...
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Heatsink provision 8 Heatsink provision With the exposed-pad packages possible to use the printed circuit board as a heatsink. Using a PCB copper ground area exposed pad, a thermal resistance of 37 °C/W ...
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TDA7493 9 Revision history Table 11. Document revision history Date 02-Apr-2008 16-Sep-2008 01-Dec-2008 14-Dec-2008 14-Oct-2009 29-Nov-2010 Revision 1 Initial release. Updated application schematic Updated Table 5: Electrical characteristics on page 9 2 Updated schematic of input structure Updated Schematic for ...
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