TDA7419 STMicroelectronics, TDA7419 Datasheet
TDA7419
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TDA7419 Summary of contents
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... Digital control: 2 – bus interface Description The TDA7419 is a high performance signal processor specifically designed for car radio applications. The device includes a high performance audioprocessor with fully integrated audio filters. Table 1. Device summary Order code TDA7419 ...
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... Middle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.7.1 4.7.2 4.7.3 2/40 Quasi-differential stereo input (QD Single-ended stereo input (SE1, SE2, SE3/AC2IN AutoZero remain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Peak frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Low and high frequency boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Flat mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Soft-step volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Quality factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 DC mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Center frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Quality factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 TDA7419 ...
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... TDA7419 4.8 Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.8.1 4.8.2 4.9 Subwoofer filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.10 Spectrum analyzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 4.11 AC coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 4.12 HPF applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.13 Output selector and mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 4.14 Audioprocessor testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 4.15 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . bus specification ...
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... Volume / speaker / mixing / subwoofer attenuation (3, 10-15 Table 12. Treble filter ( Table 13. Middle filter ( Table 14. Bass filter (6 Table 15. Second source selector ( Table 16. Subwoofer /middle / bass ( Table 17. Mixing / gain effect ( Table 18. Spectrum analyzer / clock source / AC mode (16 Table 19. Testing audio processor (17 Table 20. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 4/40 TDA7419 ...
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... TDA7419 List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 2. Pin connection (top view Figure 3. Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 4. Loudness attenuation @ fP = 400 Hz Figure 5. Loudness center frequencies @ Attn Figure 6. Loudness attenuation 2.4 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Figure 7. Soft-mute timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 8. Soft-step timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Figure 9. Bass control @ Hz Figure 10. Bass center frequencies @ gain = 15 dB Figure 11 ...
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... Block diagram 1 Block diagram Figure 1. Block diagram 6/40 TDA7419 ...
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... TDA7419 2 Pin description Figure 2. Pin connection (top view) Table 2. Pin description Pin Pin name N# 1 ACOUTR / AC2OUTR AC coupling right output / HPF filter AC2OUT right channel 2 ACINR / FILOR 3 ACINL / FILOL 4 ACOUTL / AC2OUTL AC coupling left output / HPF filter AC2OUT left channel 5 SE3L / ACINL ...
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... OUTRR2 8/40 Function Rear right output Rear left output Front left output External mute pin I2C bus clock I2C bus data Supply Spectrum analyzer clock input Spectrum analyzer output Vref output Mix input / Additional subwoofer output / 2 TDA7419 I I rear right output ...
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... TDA7419 3 Electrical specifications 3.1 Supply Table 3. Supply Symbol Parameter V Supply voltage s I Supply current s SVRR Ripple rejection @ 1 kHz 3.2 Thermal data Table 4. Thermal data Symbol R Thermal resistance junction to pinsmax Th j-pins 3.3 Absolute maximum ratings Table 5. Absolute maximum ratings Symbol V Operating supply voltage ...
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... L Test condition All single ended inputs All Input QD input Adjacent gain steps MIN MAX Differential V =1 VRMS @ 1 kHz VRMS @ 10 kHz kHz, flat; all stages 0 dB Main / mix source TDA7419 Min. Typ. Max. Unit 8 8 100 130 kΩ 1 RMS 1 RMS 80 100 ...
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... TDA7419 Table 6. Electrical characteristics (continued 8.5V 25° amb Symbol Parameter Volume control G Max gain MAX A Max attenuation MAX A Step resolution STEP E Attenuation set error A E Tracking error steps DC Soft-mute A Mute attenuation MUTE T Delay time D V Low threshold for SM pin TH Low V High threshold for SM pin ...
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... MAX 12/40 = 10kΩ; all gains = 0 dB kHz; unless otherwise specified L Test condition Adjacent attenuation steps d = 0.3% TDA7419 Min. Typ. Max. Unit ±14 ±15 ±16 dB 0.5 1 1.5 dB 400 500 600 Hz 0.8 1 1.2 kHz 1.2 1.5 1.8 kHz 2 2.5 3 kHz 0.45 0.5 ...
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... TDA7419 Table 6. Electrical characteristics (continued 8.5V 25° amb Symbol Parameter A Step resolution STEP A Mute attenuation MUTE E Attenuation set error steps DC Subwoofer lowpass f Lowpass corner frequency LP HPF effect G Max gain MAX G Min gain MIN A Step resolution STEP Spectrum analyzer control V Output voltage range ...
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... DC gain programmable – -15 to 15dB range with 1dB resolution ● Treble nd – 2 order frequency response – center frequency programmable in 4 steps (10KHz/12.5KHz/15KHz/17.5KHz) – -15 to 15dB range with 1dB resolution ● Spectrum analyzer – seven bandpass filters nd – 2 order frequency response 14/40 TDA7419 ...
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... TDA7419 – programmable Q factor for different visual appearance – analog output – controlled by external serial clock ● Speaker – 4 independent soft-step speaker controls, +15dB to -79dB with 1dB steps – Independent programmable mix input with 50% mixing ratio for front speakers – direct mute ● ...
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... AutoZero will not be invoked and the old adjustment-value remains. 4.4 Loudness There are four parameters programmable in the loudness stage: 4.4.1 Attenuation Figure 4 shows the attenuation as a function of frequency at f 16/40 QD Main QD Source SE4 SE1 SE1 SE2 SE2 SE3 SE3 Second Source TDA7419 In Gain Output Stage 2 C bus = 400 Hz P ...
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... TDA7419 Figure 4. Loudness attenuation @ 4.4.2 Peak frequency Figure 5 shows the three possible peak frequencies 400 Hz, 800 Hz and 2.4 kHz. Figure 5. Loudness center frequencies @ Attn Description of the audio processor = 400 Hz 17/40 ...
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... I C bus. This slope is realized in a special S-shaped curve to mute slow in the critical regions (see Figure For timing purposes the bit 0 of the I until the end of demuting. 18/40 = 2.4 kHz 7 bus output register is set to 1 from the start of muting TDA7419 bus ...
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... TDA7419 Figure 7. Soft-mute timing 1. Please notice that a started mute-action is always terminated and could not be interrupted by a change of the mute -signal 4.5.1 Soft-step volume When the volume level is changed audible clicks could appear at the output. The root cause of those clicks could either be a DC-Offset before the volume-stage or the sudden change of the envelope of the audiosignal ...
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... Description of the audio processor 4.6.1 Attenuation Figure 9 shows the attenuation as a function of frequency at a center frequency of 80 Hz. Figure 9. Bass control @ f 15.0 10.0 5.0 dB 0.0 -5.0 -10.0 -15.0 10.0 20/ Hz 100.0 1.0K Hz TDA7419 10.0K ...
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... TDA7419 4.6.2 Center frequency Figure 10 shows the four possible center frequencies 60, 80, 100 and 200 Hz. Figure 10. Bass center frequencies @ gain = 15 dB 4.6.3 Quality factors Figure 11 shows the four possible quality factors 1, 1.25, 1.5 and 2. Figure 11. Bass quality factors @ gain = 14 dB, f 15.0 12 ...
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... The center frequency, Q and DC-mode can be set fully independently. 4.7 Middle There are three parameters programmable in the middle stage: 4.7.1 Attenuation Figure 13 shows the attenuation as a function of frequency at a center frequency of 1 kHz. Figure 13. Middle control @ f 22/40 C 100.0 1. kHz TDA7419 = 80 Hz 10.0K ...
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... TDA7419 4.7.2 Center frequency Figure 14 shows the four possible center frequencies 500 Hz, 1 kHz, 1.5 kHz and 2.5 kHz. Figure 14. Middle center frequencies @ gain = 14 dB 4.7.3 Quality factors Figure 15 shows the four possible quality factors 0.5, 0.75, 1 and 1.25. Figure 15. Middle quality factors @ gain = 14 dB kHz ...
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... Attenuation Figure 16 shows the attenuation as a function of frequency at a center frequency of 17.5 kHz. Figure 16. Treble control @ 4.8.2 Center frequency Figure 17 shows the four possible center frequencies 10k, 12.5k, 15k and 17.5 kHz. Figure 17. Treble center frequencies @ gain = 24/40 = 17.5 kHz TDA7419 ...
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... TDA7419 4.9 Subwoofer filter The subwoofer lowpass filter has butterworth characteristics with programmable cut-off frequency (80/120/160 Hz) Figure 18. Subwoofer control 4.10 Spectrum analyzer A fully integrated seven-band spectrum analyzer with programmable quality factor is present. The spectrum analyzer consists of seven band pass filters with rectifier and sample capacitor that stores the maximum peak signal level since the last read cycle ...
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... I In short condition, the input-signal of the speaker-attenuator is available at the AC outputs. The input-impedance of this AC inputs is 50 kΩ. Figure 21. Diagram of AC coupling From Input MUX InGain 26/40 ACOUTL ACOUTR Filters TDA7419 2 C bus. ACINR ACINL To Output Speakers ...
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... TDA7419 4.12 HPF applications For HPF applications, HPF filter is available for additional processing after the speaker nd control shows the diagram of the HPF that includes an external RC network. Figure 22. HPF diagram ACOUT /AC2OUT From speaker 4.13 Output selector and mixing The output-selector allows the front and rear speakers to connect to different sources. The setup of the output selector is shown in Figure 24 ...
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... D0 of the testing audioprocessor byte, several internal signals are available at the SE1R pin. In this mode, the input resistance of 100kOhm is disconnected from the pin. Internal signals available for testing are listed in the data-byte specification. 4.15 Test circuit Figure 24. Test circuit 28/40 TDA7419 ...
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... TDA7419 bus specification 5.1 Interface protocol The interface protocol comprises: ● a start condition (S) ● a chip address byte (the LSB determines read/write transmission) ● a subaddress byte ● a sequence of data (N-bytes + acknowledge) ● a stop condition (P) ● the max. clock speed is 500 kbits/s ● ...
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... Second source selector Subwoofer / middle / bass Mixing / gain effect Speaker attenuator left front Speaker attenuator right front Speaker attenuator left rear Speaker attenuator right rear Mixing level control Subwoofer attenuator Spectrum analyzer / clock source / AC mode Testing audio processor TDA7419 Function ...
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... TDA7419 5.3 Data byte specification Table 8. Main selector (0) MSB Table 9. Main loudness (1) MSB LSB LSB bus specification Function Source selector QD/SE: QD SE1 SE2 SE3 QD/SE: SE mute mute Input gain AutoZero on off Function Attenuation - 5dB Center frequency Flat 400 Hz 800 Hz 2400 Hz High boost ...
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... LSB TDA7419 Function Soft-mute on off Pin influence for mute Pin and IIC IIC Soft-mute time 0.48 ms 0.96 ms 123 ms Soft-step time 0.160 ms 0.321 ms 0. 642 ms 1.2 8ms 2.56 ms 5.12 ms 10.24 ms 20.48 ms Clock fast mode on off Function Gain/attenuation + + -78 dB -79 dB mute Soft-step on off ...
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... TDA7419 Table 12. Treble filter (4) MSB Table 13. Middle filter (5) MSB LSB LSB bus specification Function Gain/attenuation - +14 dB +15 dB Treble center frequency 10.0 kHz 12.5 kHz 15.0 kHz 17.5 kHz Reference output select External Vref (4 V) Internal Vref (3.3 V) Function Gain/attenuation -15dB ...
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... LSB TDA7419 Function Gain/attenuation - +14 dB +15 dB Bass Q factor 1.0 1.25 1.5 2.0 Bass soft-step on off Function Source selector QD/SE: QD SE1 SE2 SE3 QD/SE: SE mute mute Input Gain 0dB 1dB : 14dB 15dB Rear Speaker Source main source second source ...
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... TDA7419 Table 16. Subwoofer /middle / bass (8) MSB LSB bus specification Function Subwoofer cut-off frequency flat 80 Hz 120 Hz 160 Hz Middle center frequency 500 Hz 1000 Hz 1500 Hz 2500 Hz Bass center frequency 100 Hz 200 Hz Bass DC mode on off Smoothing filter on off (bypass) 35/40 ...
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... LSB LSB TDA7419 Function Mixing to left front speaker on off Mixing to right front speaker on off Mixing enable on off Subwoofer enable (OUTLR2 & OUTRR2) on off Gain effect for HPF filter Function Spectrum analyzer filter Q factor 3.5 1.75 Reset mode IIC Auto ...
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... TDA7419 Table 18. Spectrum analyzer / clock source / AC mode (16) (continued) MSB Table 19. Testing audio processor (17) MSB LSB LSB bus specification Function Clock source internal external Coupling mode DC Coupling (without HPF) AC coupling after In gain DC Coupling (with HPF) AC coupling after Bass Function Audio processor testing mode ...
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... MAX. 2.65 0.104 0.3 0.004 0.012 0.49 0.014 0.019 0.32 0.009 0.013 0.5 0.020 45° (typ.) 18.1 0.697 0.713 10.65 0.394 0.419 1.27 0.050 16.51 0.65 7.6 0.291 0.299 1.27 0.016 0.050 8 ° (max.) TDA7419 OUTLINE AND MECHANICAL DATA SO-28 ® ...
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... TDA7419 7 Revision history Table 20. Document revision history Date 20-Nov-2004 16-Mar-2005 10-Jun-2005 08-Oct-2005 13-Dec-2005 13-Feb-2009 Revision 1 Initial release. 2 Inserted new values in electrical characteristics table. 3 Modified the figure 2 block diagram. 4 Minor correction 5 Updated “Absolute maximum ratings” table 3 and “Supply” table 2. Document reformatted. ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 40/40 Please Read Carefully: © 2009 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com TDA7419 ...