TDA7491HV STMicroelectronics, TDA7491HV Datasheet
TDA7491HV
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TDA7491HV Summary of contents
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... LCD TVs and monitors. Thanks to the high efficiency and exposed-pad-down (EPD) package no separate heatsink is required. Furthermore, the filterless operation allows a reduction in the external component count. The TDA7491HV is pin to pin compatible with the TDA7491P and TDA7491LP. PowerSSO-36 EPD PowerSSO-36 EPD Doc ID 14242 Rev 4 TDA7491HV ...
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... Input resistance and capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 7.4 Internal and external clocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 7.4.1 7.4.2 7.5 Filterless modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 7.6 Output low-pass filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 7.7 Protection function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 7.8 Diagnostic output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 7.9 Heatsink requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 2/ Master mode (internal clock Slave mode (external clock Doc ID 14242 Rev 4 TDA7491HV ...
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... TDA7491HV 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Doc ID 14242 Rev 4 Contents 3/41 ...
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... List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. Pin description list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table 4. Thermal data Table 5. Electrical specifications Table 6. PowerSSO-36 EPD dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Table 7. Mode settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Table 8. Gain settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Table 9. How to set up SYNCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Table 10. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 4/41 Doc ID 14242 Rev 4 TDA7491HV ...
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... 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 Doc ID 14242 Rev 4 List of figures 5/41 ...
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... Master and slave connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 55. Unipolar PWM output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Figure 56. Typical LC filter for a 8-Ω speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Figure 57. Typical LC filter for a 4-Ω speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Figure 58. Behavior of pin DIAG for various protection conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Figure 59. Power derating curves for PCB used as heatsink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 6/41 Doc ID 14242 Rev 4 TDA7491HV ...
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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 4 Device block diagram 7/41 ...
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... PVCCB PVCCB OUTNB OUTNB OUTNA OUTNA PVCCA PVCCA PGNDA PGNDA OUTPA OUTPA 8/ exposed pad down Connect to ground PGND Doc ID 14242 Rev 4 TDA7491HV VSS 36 SVCC 35 VREF 34 INNB 33 INPB 32 GAIN1 31 GAIN0 30 SVR 29 DIAG 28 SGND 27 VDDS 26 SYNCLK 25 ROSC 24 INNA 23 INPA 22 21 MUTE STBY 20 19 ...
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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 INNA 24 ROSC 25 SYNCLCK 26 VDDS 27 SGND 28 DIAG 29 SVR 30 GAIN0 31 GAIN1 ...
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... Section 7.9: Heatsink requirements on page Table 5 below are given for the conditions kΩ 100 nF kHz, G OSC Parameter Condition - - - Play mode Mute mode = 0 Ω Differential input Doc ID 14242 Rev 4 TDA7491HV Value Unit °C -40 to 150 °C -40 to 150 °C Min Typ Max Unit - 2 3 ° ...
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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 V ∆G Gain matching V CT Cross talk eN Total input noise SVRR ...
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... Po =16W @THD =1% Figure 4. THD vs output power (1 kHz) Test Condition: Vcc=14V, RL=4 ohm, Rosc=39k , Cosc=100nF, f =1kHz, Gv=30dB, Tamb=25 Specification Limit: Typical: Po=20W @ THD=10% 12/ THD vs. Output Power THD (%) 0.5 0.2 0.1 0.05 0.02 0.01 100m 200m 500m 1 Output Power (W) Doc ID 14242 Rev 4 TDA7491HV ...
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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 1kHz, Gv=30dB, Po=1W Tamb=25 Specification Limit: Typical: THD <0.5% Figure 7. ...
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... Frequency (Hz) FFT (dB) +0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 -150 20 50 100 200 500 Frequency (Hz) Doc ID 14242 Rev 4 TDA7491HV 10k 20k 2k 5k 10k 20k 10k 20k ...
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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 Condition: Vcc=14V, RL=4 ohm, Rosc=39k , Cosc=100nF, f =1kHz, Gv=30dB, Tamb=25 Figure 13. Closed-loop gain vs frequency ...
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... Rosc = 39k , Cosc = 100nF, 0dB@f=1kHz, Po=1w, Gain=30dB, Tamb=25 Figure 16. Current consumption vs voltage on pin STBY Test Condition: Vcc =14V, RL= 4 ohm, Rosc = 39k , Cosc = 100nF, Vin=0, Tamb=25 16/41 Vcc=14V Rload=4ohm Gain=30dB Vin=0 Vcc=14V Rload=4ohm Gain=30dB Vin=0 Doc ID 14242 Rev 4 TDA7491HV Vcc=14V Rload=4ohm Gain=30dB 0dB@f=1kHz, Po=1w ...
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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 Condition : f =1kHz Specification Limit: Typical: Vs =16V,Rl =6 ohm Po=20W @THD=10% Po=16W @THD=1% ...
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... Output Power (W) p THD (%) 0.5 0.2 0.1 0.05 0.02 0.01 0.005 200m 500m 1 2 Output Power (W) THD vs. Frequency THD (%) 2 1 0.5 0.2 0.1 0.05 0.02 0. 100 200 500 1k Frequency (Hz) Doc ID 14242 Rev 4 TDA7491HV 10k 20k ...
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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 =16V, RL= 6 ohm, Rosc =39k , Cosc =100nF 1kHz, Gv =30dB, Po =1W Tamb=25 Specification Limit: Typical: > ...
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... Frequency (Hz) +0 -10 -20 Ripple frequency=100Hz -30 Ripple voltage=500mV - - -60 -70 -80 -90 -100 20 50 100 200 500 Doc ID 14242 Rev 4 TDA7491HV 2k 5k 10k 20k 10k 20k Hz Vcc=16V Rload=6ohm Gain=30dB f=1kHz ...
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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 =39k , Cosc =100nF, Vin=0, Gain=30dB, Tamb =25 Figure 30. Attenuation vs voltage on pin MUTE ...
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... 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= 6 ohm, Rosc =39k , Cosc =100nF, 0dB@f=1kHz,Po=1w, Gain=30dB, Tamb =25 22/41 Vcc=16V Rload=6ohm Gain=30dB Vin=0 Vcc=16V Rload=6ohm Gain=30dB 0dB@f=1kHz, Po=1w Doc ID 14242 Rev 4 TDA7491HV ...
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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, ohm Po =20W @THD =10% Po =16W @THD =1% Figure 34. THD vs output power (1 kHz) Test Condition: Vcc =18V, ...
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... Output Power (W) THD (%) 2 1 0.5 0.2 0.1 0.05 0.02 0.01 0.005 20 50 100 200 500 Frequency (Hz) Ampl (dB 100 200 500 Frequency (Hz) Doc ID 14242 Rev 4 TDA7491HV 10k 20k 10k 30k ...
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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, RL= 8 ohm, Rosc =39k , Cosc =100nF 1kHz, Gv =30dB, Po =1W Tamb =25 Specification Limit: Typical: > ...
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... Ripple frequency=100Hz Ripple voltage=500mV - - -60 -70 -80 -90 -100 20 50 100 200 500 Hz 8ohm 18v PSRR.at27 +2 +1.5 Gain=26dB Gain=32dB +1 +0 -1.5 r Gain=22dB Gain=30dB -2 A -2.5 -3 -3 100 200 500 Doc ID 14242 Rev 4 TDA7491HV 10k 20k Vcc=18V Rload=8ohm Gain=30dB f=1kHz 10k 20k 30k Hz ...
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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 ohm, Rosc =39k , Cosc =100nF, 0dB@f=1kHz,Po=1w, Gain=30dB, Tamb =25 Figure 46. Current consumption vs voltage on pin STBY ...
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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 4 TDA7491HV ...
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... TDA7491HV 4.4 Test board Figure 48. Test board (TDA7491HV) layout Doc ID 14242 Rev 4 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. Doc ID 14242 Rev 4 TDA7491HV ...
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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. 4.10 Y 4.90 In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ...
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... Applications circuit Figure 50. Applications circuit for class-D amplifier Input settings for gain: GAIN0 : GAIN1 3 3.3 V 32/41 TDA7491HV Input settings for standby, mute and play: Nominal gain STBY : MUTE 3.3 V Doc ID 14242 Rev 4 TDA7491HV Mode Standby Standby Mute Play ...
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... Application information 7.1 Mode selection The three operating modes of the TDA7491HV 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: inputs are connected to ground and the positive and negative PWM outputs are at 50% duty cycle ...
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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 GAIN0 7.3 Input resistance and capacitance The input impedance is set by an internal resistor kΩ (typical). An input capacitor (Ci) is required to couple the AC input signal ...
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... If two or more class-D amplifiers are used in the same system recommended that all devices operate at the same clock frequency. This can be implemented by using one TDA7491HV as master clock, while the other devices are in slave mode (that is, externally clocked. The clock interconnect is via pin SYNCLK of each device. As explained below, SYNCLK is an output in master mode and an input in slave mode ...
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... BTL output switching at the same time. TDA7491HV can be used without a filter before the speaker, because the frequency of the TDA7491HV output is beyond the audio frequency, the audio signal can be recovered by the inherent inductance of the speaker and natural filter of the human ear. ...
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... TDA7491HV 7.6 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 necessary to choose the L-C component values depending on the loud speaker impedance. Some typical values, which give a cut-off frequency of 27 kHz, are ...
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... Application information 7.7 Protection function The TDA7491HV 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 10 the overvoltage protection is activated which forces the outputs to the high-impedance state. When the supply voltage drops to below the threshold value the device restarts ...
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... 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 TDA7491HV is less than 4 W. When properly mounted on the above PCB the junction temperature could increase by 96 °C. ...
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... Revision 1 Initial release. Updated AMR table Updated Chapter 4: Characterization curves on page 12 Added Figure 48: Test board (TDA7491HV) layout on page 29 Updated Figure 49: PowerSSO-36 EPD outline drawing on 2 page 30 and Table 6: PowerSSO-36 EPD dimensions on page 31 Updated Figure 50: Applications circuit for class-D amplifier 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. ...