TDA7419TR STMicroelectronics, TDA7419TR Datasheet

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... The device includes a high performance audioprocessor with fully integrated audio filters. Table 1. Device summary Order code TDA7419 TDA7419TR February 2009 3 band car audio processor SO-28 The digital control allows programming in a wide range of filter characteristics. By the use of BICMOS-process and linear signal processing low distortion and low noise are obtained ...

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Contents Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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TDA7419 4.8 Treble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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

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TDA7419 List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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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 ...

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Pin description Table 2. Pin description (continued) Pin Pin name N# 18 OUTRR 19 OUTLR 20 OUTLF 21 MUTE 22 SCL 23 SDA 24 VDD 25 SAIN 26 SAOUT 27 VREF MIX / OUTSW / 28 OUTRR2 8/40 Function Rear ...

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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 ...

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Electrical specifications 3.4 Electrical characteristics Table 6. Electrical characteristics V = 8.5V 25° amb Symbol Parameter Supply V Supply voltage S I Supply current S Input selector R Input resistance in V Clipping level CL S ...

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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 T ...

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Electrical specifications Table 6. Electrical characteristics (continued 8.5V 25° amb Symbol Parameter Middle control C Control range RANGE A Step resolution STEP f Center frequency c Q Quality factor BASS Treble control C Clipping ...

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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 ...

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Description of the audio processor 4 Description of the audio processor 4.1 Audio processor features ● Input Multiplexer – SE: quasi-differential stereo inputs, with selectable single-ended mode – SE1: stereo single-ended input – SE2: stereo single-ended input – ...

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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 ...

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Description of the audio processor Figure 3. Input stage QD_L QD_G QD_R SE1_L SE1_R SE2_L SE2_R AC2IN_L/SE3L AC2IN_R/SE3R 4.3 AutoZero The AutoZero allows a reduction of the number of pins as well as external components by canceling any offset generated ...

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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. ...

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Description of the audio processor 4.4.3 Low and high frequency boost Figure 6 shows the different loudness shapes in low and high frequency boost. Figure 6. Loudness attenuation ...

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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 ...

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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 20/40 ...

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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 ...

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Description of the audio processor 4.6.4 DC mode It is used for cut only for shelving filter. In this mode the DC gain is increased by 4.4 dB. In addition the programmed center frequency and quality factor is decreased by ...

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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 ...

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Description of the audio processor 4.8 Treble There are two parameters programmable in the treble stage: 4.8.1 Attenuation Figure 16 shows the attenuation as a function of frequency at a center frequency of 17.5 kHz. Figure 16. Treble control @ ...

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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 ...

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Description of the audio processor Figure 20. Timing of the spectrum analyzer 4.11 AC coupling In some applications additional signal manipulations are desired, such as additional band equalizations. For this purpose coupling can be placed before the loudness ...

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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 ...

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Description of the audio processor 4.14 Audioprocessor testing In the test mode, which can be activated by setting bit D7 of the IIC subaddress byte and bit D0 of the testing audioprocessor byte, several internal signals are available at the ...

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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 + ...

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I C bus specification 5.2 Subaddress (receive mode) Table 7. Subaddress (receive mode MSB ...

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TDA7419 5.3 Data byte specification Table 8. Main selector (0) MSB Table 9. Main loudness (1) MSB D7 D6 ...

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I C bus specification Table 10. Soft-mute / clock generator (2) MSB ...

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TDA7419 Table 12. Treble filter (4) MSB Table 13. Middle filter (5) MSB ...

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I C bus specification Table 14. Bass filter (6) MSB Table 15. Second source selector ...

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TDA7419 Table 16. Subwoofer /middle / bass (8) MSB LSB ...

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I C bus specification Table 17. Mixing / gain effect (9) MSB ...

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TDA7419 Table 18. Spectrum analyzer / clock source / AC mode (16) (continued) MSB Table 19. Testing audio processor (17) MSB ...

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Package information 6 Package information 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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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 ...

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... 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. ...