TDA7491HV13TR STMicroelectronics, TDA7491HV13TR Datasheet

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... Thermal overload protection ■ Externally synchronizable Table 1. Device summary Order code Operating temperature TDA7491HV -40 to 85°C TDA7491HV13TR -40 to 85°C March 2011 dual BTL class-D audio amplifier = Description The TDA7491HV 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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TDA7491HV 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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List of tables List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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TDA7491HV List of figures Figure 1. Internal block diagram (one channel only ...

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List of figures Figure 49. PowerSSO-36 EPD outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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TDA7491HV 1 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) Doc ID 14242 Rev 5 Device block diagram 7/41 ...

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Pin description 2 Pin description 2.1 Pin out Figure 2. Pin connection (top view, PCB view) SUB_GND OUTPB OUTPB PGNDB PGNDB PVCCB PVCCB OUTNB OUTNB OUTNA OUTNA PVCCA PVCCA PGNDA PGNDA OUTPA OUTPA 8/ ...

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TDA7491HV 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 23 ...

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Electrical specifications 3 Electrical specifications 3.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol V DC supply voltage for pins PVCCA, PVCCB CC Voltage limits for input pins STBY,MUTE,INNA,INPA,INNB Vi INPB,GAIN0,GAIN1 T Operating temperature op T Junction temperature j ...

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TDA7491HV 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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Characterization curves 4 Characterization curves The following characterization curves were made using the TDA7491HV demo board. The LC filter for the 4-Ω load uses components of 15 µH and 470 nF, whilst that for the 6-Ω load uses 22 µH ...

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TDA7491HV Figure 5. THD vs. output power (100 Hz) Test Condition: Vcc=14V, RL=4 ohm, Rosc=39k , Cosc=100nF, f =100Hz, Gv=30dB, Tamb=25 Specification Limit: Typical: 20W @ THD=10% Figure 6. THD vs. frequency Test Condition: Vcc=14V, RL=4 ohm, Rosc=39k , Cosc=100nF, ...

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Characterization curves Figure 8. Crosstalk vs. frequency Test Condition: Vcc =14V, RL= 4 ohm, Rosc= 39k , Cosc = 100nF 1kHz 30dB Tamb = 25 Specification Limit: Typical: >50dB (@ f = 1kHz) ...

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TDA7491HV Figure 11. Power supply rejection ratio vs. frequency Test Condition: Vcc =14V, RL= 4 ohm, Rosc = 39k , Cosc = 100nF, Vin=0, Gv=30dB, 0dB refers to 500mV,100Hz Tamb=25 Figure 12. Power dissipation and efficiency vs. output power Test ...

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Characterization curves Figure 14. Current consumption vs. voltage on pin MUTE Test Condition: Vcc =14V, RL= 4 ohm, Rosc = 39k , Cosc = 100nF, Vin=0, Tamb=25 Figure 15. Attenuation vs. voltage on pin MUTE Test Condition: Vcc =14V, RL= ...

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TDA7491HV Figure 17. Attenuation vs. voltage on pin STBY Test Condition: Vcc =14V, RL= 4 ohm, Rosc = 39k , Cosc = 100nF, 0dB@f=1kHz,Po=1w, Gain=30dB. Tamb=25 4.2 With 6-Ω load at V Figure 18. Output power vs. supply voltage Test ...

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Characterization curves Figure 19. THD vs. output power (1 kHz) Test Condition: Vcc =16V, RL= 6 ohm, Rosc =39k , Cosc =100nF, f =1kHz, Gv =30dB, Tamb =25 Specification Limit: Typical: Po=20W @ THD=10% Figure 20. THD vs. output power ...

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TDA7491HV Figure 22. Frequency response Test Condition: Vcc=16V, RL= 6 ohm, Rosc =39k , Cosc =100nF 1kHz, Gv =30dB, Po =1W Tamb =25 Specification Limit: Max: +/-3dB @20Hz to 20kHz Figure 23. Crosstalk vs. frequency Test Condition: Vcc ...

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Characterization curves Figure 25. FFT (-60 dB) Test Condition: Vcc =16V, RL= 6 ohm, Rosc =39k , Cosc =100nF, f =1kHz, Gv =30dB -60dB (@ 1W =0dB) Tamb =25 Specification Limit: Typical: > 90dB for the harmonic frequency ...

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TDA7491HV Figure 28. Closed-loop gain vs. frequency Test Condition: Vcc =16V, RL= 6 ohm, Rosc =39k , Cosc =100nF, 0dB@f=1kHz,Po=1w, Gv=32dB, Tamb =25 Figure 29. Current consumption vs. voltage on pin MUTE Test Condition: Vcc =16V, RL= 6 ohm, Rosc ...

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Characterization curves Figure 31. Current consumption vs. voltage on pin STBY Test Condition: Vcc =16V, RL= 6 ohm, Rosc =39k , Cosc =100nF, Vin=0, Gain=30dB, Tamb =25 Figure 32. Attenuation vs. voltage on pin STBY Test Condition: Vcc =16V, RL= ...

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TDA7491HV 4.3 With 8-Ω load at V Figure 33. Output power vs. supply voltage Test Condition : Vcc = 5~18V ohm, Rosc =39k , Cosc =100nF, f =1kHz, Gv =30dB, Tamb =25 Specification Limit: Typical: Vs =18V,Rl ...

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Characterization curves Figure 35. THD vs. output power (100 Hz) Test Condition: Vcc =18V, RL= 8 ohm, Rosc =39k , Cosc =100nF, f =100Hz, Gv =30dB, Tamb =25 Specification Limit: Typical: 20W @ THD =10% Figure 36. THD vs. frequency ...

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TDA7491HV Figure 38. Crosstalk vs. frequency Test Condition: Vcc =18V, RL= 8 ohm, Rosc =39k , Cosc =100nF 1kHz, Gv=30dB, Po=1W Tamb=25 Specification Limit: Typical: >50dB (@ f =1kHz) Figure 39. FFT (0 dB) Test Condition: Vcc =18V, ...

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Characterization curves Figure 41. Power supply rejection ratio vs. frequency Test Condition: Vcc =18V, RL= 8 ohm, Rosc =39k , Cosc =100nF, Vin=0, Gv =30dB, Tamb =25 0dB refers to 500mV, 100Hz Figure 42. Power dissipation and efficiency vs. output ...

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TDA7491HV Figure 44. Current consumption vs. voltage on pin MUTE Test Condition: Vcc =18V, RL= 8 ohm, Rosc =39k , Cosc =100nF, Vin=0, Gain=30dB, Tamb =25 Figure 45. Attenuation vs. voltage on pin MUTE Test Condition: Vcc =18V, RL= 8 ...

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Characterization curves Figure 47. Attenuation vs. voltage on pin STBY Test Condition: Vcc =18V, RL= 8 ohm, Rosc =39k , Cosc =100nF, 0dB@f=1kHz,Po=1w, Gain=30dB, Tamb =25 28/41 Vcc=18V Rload=8ohm Gain=30dB 0dB@f=1kHz, Po=1w Doc ID 14242 Rev 5 TDA7491HV ...

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TDA7491HV 4.4 Test board Figure 48. Test board (TDA7491HV) layout Doc ID 14242 Rev 5 Characterization curves 29/41 ...

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Package mechanical data 5 Package mechanical data The TDA7491HV comes in a 36-pin PowerSSO package with exposed pad down (EPD). Figure 49 below shows the package outline and Figure 49. PowerSSO-36 EPD outline drawing 30/41 Table 6 gives the dimensions. ...

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TDA7491HV Table 6. PowerSSO-36 EPD dimensions Symbol Min A 2.15 A2 2.15 a1 0.00 b 0.18 c 0.23 D 10. 10. 0. ...

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Applications circuit 6 Applications circuit Figure 50. Applications circuit for class-D amplifier 32/41 TDA7491HV Doc ID 14242 Rev 5 TDA7491HV ...

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TDA7491HV 7 Application information 7.1 Mode selection The three operating modes , defined below, of the TDA7491HV are set by the two inputs STBY (pin 20) and MUTE (pin 21) as shown ● Standby mode: all circuits are turned off, ...

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Application information 7.2 Gain setting The gain of the TDA7491HV is set by the two inputs, GAIN0 (pin 30) and GAIN1 (pin 31). Internally, the gain is set by changing the feedback resistors of the amplifier. Table 8. Gain settings ...

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TDA7491HV 7.4 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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Application information 7.5 Modulation The output modulation scheme of the BTL is called unipolar pulse width modulation (PWM). The differential output voltages change between 0 V and +V This is in contrast to the traditional bipolar PWM outputs which change ...

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TDA7491HV 7.6 Reconstruction low-pass filter Standard applications use a low-pass filter before the speaker. The cut-off frequency should be higher than 22 kHz and much lower than the output switching frequency necessary to choose the L-C component values ...

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Application information 7.7 Protection function The TDA7491HV is fully protected against undervoltages, overcurrents and thermal overloads as explained here. Undervoltage protection (UVP) If the supply voltage drops below the value page 10 the undervoltage protection is activated ...

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TDA7491HV Using such a PCB with a copper ground layer of 3x3cm2 and 16 vias connecting it to the contact area for the exposed pad, a thermal resistance , junction to ambient (in natural air convection °C/W can ...

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Revision history 8 Revision history Table 10. Document revision history Date 02-Jul-2007 03-Oct-2008 29-Jun-2009 03-Sep-2009 24-Mar-2011 40/41 Revision 1 Initial release. Updated AMR table Updated Chapter 4: Characterization curves on page 12 Added Figure 48: Test board (TDA7491HV) layout on ...

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... TDA7491HV Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...